CN113872699B - Light emitting device, method and optical module - Google Patents
Light emitting device, method and optical module Download PDFInfo
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Abstract
The disclosure provides a light emitting device, a light emitting method and an optical module, and relates to the technical field of optical communication. The light emitting device includes: a light source assembly for providing an initial continuous light signal; the optical power distribution and modulation component is used for carrying out shunting on the initial continuous optical signals according to shunting configuration parameters and respectively modulating the shunted multipath optical signals to obtain multipath modulated optical signals; the optical power monitoring component is used for monitoring the transmitting power of the multi-path modulation optical signal; and the control component is used for adjusting the power of the initial continuous optical signal and the shunt configuration parameters according to the transmitting power of the multi-path modulation optical signal. The light source sharing is realized, the manufacturing cost and the power consumption of the light emitting device are reduced, a plurality of emitting ports are integrated, and the port density is improved. Meanwhile, the stability of the modulated optical signal is ensured by monitoring the transmitting power of the multi-path modulated optical signal to control the light source assembly and the optical power distribution and modulation assembly.
Description
Technical Field
The present disclosure relates to the field of optical communication technologies, and in particular, to an optical transmission apparatus and method, and an optical module.
Background
In the field of communications, electrical interconnection transmission of metal wires is greatly limited due to electromagnetic interference, intersymbol interference and loss, wiring costs, and other factors on electrical transmission. Therefore, optical transmission is promoted, and has the advantages of high bandwidth, large capacity, easy integration, low loss, good electromagnetic compatibility, no crosstalk, light weight, small volume and the like, so that the optical output is widely applied to digital signal transmission.
The optical module is used as a core device in optical fiber transmission, various indexes of the optical module determine the overall transmission performance, and the optical module mainly plays a role in mutual conversion between electric signals and optical signals. However, the chip cost required in the laser and photodetector of the optical module is high, and the power consumption of the optical module is high.
Therefore, how to reduce the manufacturing cost and power consumption of the optical module is a technical problem that needs to be solved by those skilled in the art at present.
Disclosure of Invention
The present disclosure provides a light emitting device, a light emitting method and an optical module to reduce manufacturing cost and power consumption of the optical module.
According to a first aspect of an embodiment of the present disclosure, there is provided a light emitting device including:
a light source assembly for providing an initial continuous light signal;
the optical power distribution and modulation assembly is used for carrying out shunting on the received initial continuous optical signals output by the light source assembly according to shunting configuration parameters to obtain multiple paths of optical signals, and respectively modulating the multiple paths of optical signals to obtain multiple paths of modulated optical signals;
the optical power monitoring component is used for monitoring the transmitting power of the multi-path modulation optical signal output by the optical power distribution and modulation component;
and the control component is used for adjusting the power of the initial continuous optical signal to be output by the light source component and the shunt configuration parameters of the optical power distribution and modulation component according to the emission power of the multi-path modulation optical signal output by the optical power monitoring component.
In some embodiments, the optical power distribution and modulation assembly comprises an optical power distribution assembly and a plurality of optical modulation assemblies;
the optical power distribution component is configured to perform branching on the initial continuous optical signal according to a branching configuration parameter to obtain the multiple optical signals;
the optical modulation component is used for modulating one path of optical signal output by the optical power distribution component to obtain one path of modulated optical signal.
In some embodiments, the optical modulation assembly is connected to an electrical signal emission source;
the optical modulation component is also used for acquiring time sequence information corresponding to the electric signal transmitted by the electric signal transmitting source;
the optical power distribution assembly is further configured to obtain the shunting configuration parameter according to timing information corresponding to the electrical signal output by the optical modulation assembly, and shunt the initial continuous optical signal according to the shunting configuration parameter to obtain a multi-path shunting optical signal.
In some embodiments, the optical modulation assembly is connected to an electrical signal emission source;
the optical modulation component is further used for acquiring an electrical signal emitted by the electrical signal emission source and modulating one path of optical signal output by the optical power distribution component according to the electrical signal to obtain the one path of modulated optical signal.
In some embodiments, the number of the optical power monitoring assemblies is multiple, and the optical power monitoring assemblies are arranged corresponding to the optical modulation assemblies;
the optical power monitoring component is used for monitoring the transmitting power of one path of modulated optical signals output by the optical modulation component.
In some embodiments, the control component is further configured to obtain a total optical power of the modulated optical signals according to the emission power of one path of modulated optical signals output by each optical power monitoring component, obtain a preset total optical power of the modulated optical signals according to the preset optical power of the multi-path modulated optical signals output by the optical power distribution and modulation component, and generate a first control instruction according to the total optical power and the preset total optical power, so that the light source component adjusts the power of the initial continuous optical signal to be output according to the first control instruction.
In some embodiments, the control component is further configured to obtain an emission power of the modulated optical signal output by the optical power monitoring component, obtain a preset optical power of the modulated optical signal output by the optical power distribution and modulation component, and generate a second control instruction according to the emission power and the preset optical power, so that the optical power distribution and modulation component adjusts the splitting configuration parameter of the optical power distribution component according to the second control instruction.
In some embodiments, the light source assembly comprises an internal light source connected to the optical power distribution and modulation assembly and an external light source interface for connecting an external light source.
According to a second aspect of embodiments of the present disclosure, there is provided a light module including the light emitting apparatus as described above.
According to a third aspect of the embodiments of the present disclosure, there is provided a light emitting method applied to the light emitting apparatus described above, the method including:
acquiring an initial continuous optical signal, and carrying out shunting on the initial continuous optical signal according to shunting configuration parameters to obtain a plurality of paths of optical signals;
respectively modulating the multiple paths of optical signals to obtain multiple paths of modulated optical signals;
monitoring the transmission power of the multi-path modulation optical signal;
and adjusting the power of the initial continuous optical signal to be output by the light source assembly and the shunt configuration parameters of the optical power distribution and modulation assembly according to the transmitting power of the multi-path modulation optical signal.
Exemplary embodiments of the present disclosure have the following advantageous effects:
this is disclosed through being divided into multichannel light signal with initial continuous light signal branch to modulate multichannel light signal respectively, so that light emitting device can export multichannel modulation light signal simultaneously, thereby realize the sharing of light source, reduce light emitting device's manufacturing cost and consumption, and integrate a plurality of transmission ports, improved port density. Meanwhile, the transmitting power of the modulated optical signal is monitored in real time, the power of the initial continuous optical signal to be output by the light source assembly is adjusted according to the transmitting power of the modulated optical signal, so that the optical power of the initial continuous optical signal of the light emitting device can meet the total optical power of the multi-path modulated optical signal, the shunt configuration parameters of the optical power distribution and modulation assembly are adjusted, the optical power distribution and modulation assembly can accurately shunt the initial continuous optical signal, the transmitting power of the multi-path modulated optical signal is further ensured, and the stability of the multi-path modulated optical signal is ensured.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the disclosure. It should be apparent that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from those drawings by those of ordinary skill in the art without inventive effort. In the drawings:
fig. 1 shows a schematic structural diagram of a light module in an embodiment of the present disclosure;
fig. 2 shows a schematic structural diagram of a light emitting device in an embodiment of the present disclosure;
fig. 3 shows a schematic view of a light emitting device in another embodiment of the present disclosure;
FIG. 4 is a schematic diagram illustrating an optical power distribution and modulation assembly according to an embodiment of the present disclosure;
FIG. 5 is a schematic diagram of an optical power distribution and modulation assembly according to another embodiment of the present disclosure;
FIG. 6 is a schematic diagram illustrating the cooperation of an optical power monitoring assembly with other assemblies in an embodiment of the present disclosure;
fig. 7 shows a flow chart of a light emission method in an embodiment of the disclosure.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the exemplary embodiments below do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
The block diagrams shown in the figures are functional entities only and do not necessarily correspond to physically separate entities. I.e. these functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor means and/or microcontroller means.
The flow charts shown in the drawings are merely illustrative and do not necessarily include all of the contents and operations/steps, nor do they necessarily have to be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.
It should also be noted that: reference to "a plurality" in this application means two or more. "and/or" describes the association relationship of the associated object, indicating that there may be three relationships, for example, a and/or B may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
In the following, some embodiments of the present disclosure are described in detail with reference to the drawings, and features of the embodiments and the examples described below may be combined with each other without conflict.
One of the core elements of fiber optic communications is the conversion of optical to electrical signals. Optical fiber communication uses optical signals carrying information to transmit in optical fibers or optical waveguides, and low-cost and low-loss information transmission can be realized by using optical transmission characteristics. Information processing equipment such as computers use electrical signals as data sources, and therefore mutual conversion between electrical signals and optical signals is required to be achieved in the process of signal transmission.
Referring to fig. 1, fig. 1 is a diagram illustrating an optical module 100 according to an exemplary embodiment of the disclosure. As shown in fig. 1, the optical module 100 includes a light emitting device 10 to operate as a data transmitting end. The optical transmitter 10 converts the electrical signal into an optical signal to obtain a multi-channel modulated optical signal, and then transmits the modulated optical signal through a transmission device such as an optical fiber, thereby transmitting the modulated optical signal to a device at a data receiving end. The optical module 100 may further include an optical receiving device 20 to operate as a data receiving end, where the optical receiving device 20 receives a modulated optical signal from a data sending end, converts the modulated optical signal into a corresponding electrical signal, and further provides an electrical signal data source for the information processing apparatus.
It should be noted that the optical module 100 provided in the embodiment of the present disclosure may be applied to a communication device in a network, for example, a BaseBand Unit (BBU) and a Remote Radio Unit (RRU) in a 4th Generation (4G) network, and for example, a Distributed Unit (DU) and an Active Antenna Unit (AAU) in a 5th Generation (5G) network. It is understood that the optical module 100 can be applied to any kind of communication device, and the embodiment of the present disclosure does not specifically limit the kind of device to which the optical module 100 is applied.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a light emitting device 10, and the light emitting device 10 according to the embodiment of the disclosure may be applied to an optical module 100. It should be noted that the usage scenario of the light emitting device 10 provided in the present disclosure is not limited to the optical module, and may also be applied to other optical systems, for example, a coherent Optical Communication System (OCS).
As shown in fig. 2, the light emitting device 10 includes a light source assembly 11, an optical power distribution and modulation assembly 12, an optical power monitoring assembly 13, and a control assembly 14. The light source module 11 is connected to the optical power distribution and modulation module 12 for providing an initial continuous optical signal to the optical power distribution and modulation module 12. The optical power distribution and modulation component 12 is configured to perform branching on the received initial continuous optical signal output by the light source component 11 according to a branching configuration parameter to obtain multiple paths of optical signals, and modulate the multiple paths of optical signals respectively to obtain multiple paths of modulated optical signals. The optical power monitoring assembly 13 is connected to the optical power distribution and modulation assembly 12, and is configured to monitor the transmission power of the multi-channel modulated optical signal output by the optical power distribution and modulation assembly 12. The control component 14 is connected to the light source component 11, the optical power distribution and modulation component 12, and the optical power monitoring component 13, and is configured to adjust, according to the emission power of the multi-channel modulated optical signal output by the optical power monitoring component 13, the power of the initial continuous optical signal to be output by the light source component 11 and the shunt configuration parameter of the optical power distribution and modulation component 12.
The initial continuous optical signal is divided into multiple paths of optical signals, and the multiple paths of optical signals are modulated respectively, so that the optical transmitting device 10 can simultaneously output multiple paths of modulated optical signals, thereby realizing the sharing of the light source, and therefore, the problems that the optical transmitting device in the related art cannot realize the sharing of the light source, has poor universality, is complex in packaging and has poor integration can be solved.
The transmission power of the modulated optical signal refers to the light intensity of the modulated optical signal, and if the transmission power is not within the preset transmission power range, the situation that an error code exists in an electric signal obtained through analysis when a data receiving end receives the modulated optical signal can be caused. Therefore, the optical power monitoring component 13 is arranged to monitor the transmitting power of the modulated optical signal in real time, and the control component 14 is used to adjust the power of the initial continuous optical signal to be output by the optical source component 11 according to the transmitting power of the modulated optical signal, so as to ensure that the optical power of the initial continuous optical signal of the optical transmitter 10 can meet the total optical power of the multi-path modulated optical signal, and adjust the configuration parameters of the branch path of the optical power distribution and modulation component 12, so as to ensure that the optical power distribution and modulation component 12 can accurately branch the initial continuous optical signal, thereby ensuring the transmitting power of the multi-path modulated optical signal.
In some embodiments, referring to fig. 3, the light source assembly 11 may include an internal light source 111 connected to the optical power distribution and modulation assembly 12 and an external light source interface 112, wherein the external light source interface 112 is used for connecting an external light source. Optionally, each of the internal light source 111 and the external light source may include one or more sub-light sources, each of which may generate an optical signal with a different wavelength. Each light source may be a light emitting device such as a laser or a Light Emitting Diode (LED) capable of generating a light signal, and the laser includes, but is not limited to, a Distributed Feedback (DFB) laser and a fabry-perot (FP) laser.
The basic operation of the light emitting device 10 can be ensured by providing the internal light source 111. The external light source interface 112 is provided, so that the light source of the light emitting device 10 may further include an external light source, and the external light source may be flexibly selected according to specific application situations. The light of the external light source is input into the light emitting device 10 through the external light source interface 112, and the external light source may not be a part of the light emitting device 10, so that the purpose of flexibly adjusting and replacing the external light source can be achieved, and the wavelengths of the replaced light sources may be different, thereby achieving flexible adjustment of the emission wavelength, simultaneously reducing the heat dissipation of the light source inside the optical module, and reducing the packaging complexity.
In some embodiments, referring to fig. 4, fig. 4 is a schematic structural diagram of the optical power distribution and modulation device 12, and the optical power distribution and modulation device 12 includes an optical power distribution device 121 and a plurality of optical modulation devices 122. The optical power distribution component 121 is configured to perform branching on the initial continuous optical signal according to a branching configuration parameter to obtain multiple paths of optical signals; the optical modulation component 122 is configured to modulate a path of optical signal output by the optical power distribution component 121 to obtain a path of modulated optical signal.
As shown in fig. 4, the input end 1211 of the optical power distribution module 121 is connected to the light source assembly 11 and is configured to receive an initial continuous optical signal sent by the light source assembly 11, the optical power distribution module 121 is disposed with a plurality of output ends 1212, and each output end 1212 is connected to one optical modulation module 122 so as to output the branched optical signal to the corresponding optical modulation module 122 through the plurality of output ends 1212, respectively. The splitting configuration parameter refers to a parameter corresponding to the optical power splitting component 121 when splitting the initial continuous optical signal. For example, the shunt configuration parameter may be a capacitance parameter, a resistance parameter, a bias current parameter, and other parameter values of the circuit corresponding to the output terminal 1212, which are obtained by calculating, by the optical power distribution component 121, according to the preset optical power of the optical signal to be output at the corresponding output terminal 1212. It is understood that each output terminal 1212 may have different splitting configuration parameters configured for each output terminal 1212 by the optical power distribution assembly 121 due to different parameters of the optical signal to be output, wherein the parameters of the optical signal include, but are not limited to, optical power parameters, optical wavelength parameters, and the like.
The light emitting device 10 includes a plurality of light modulation components 122, and each light modulation component 122 is disposed corresponding to the output end 1212 of the optical power distribution component 121 to receive the optical signal output by the output end 1212 of the optical power distribution component 121. It is understood that the number of the light modulation components 122 and the number of the output ends 1212 can be flexibly set according to the requirements of the practical application scenario, and the embodiment of the disclosure does not limit this.
The optical modulation component 122 refers to a modulation device that superimposes a signal carrying information onto a carrier optical wave, and is used to modulate parameters of an optical signal to obtain a corresponding modulated optical signal. For example, one or more parameters of the amplitude, phase, intensity, polarization state of the optical signal are modulated. The plurality of light modulation assemblies 122 can modulate the plurality of paths of light signals respectively to obtain a plurality of paths of light modulation signals, and each light modulation assembly 122 can be connected with different data receiving ends to transmit the plurality of paths of light modulation signals to different data receiving ends respectively, and then the light emitting device 10 can transmit the light modulation signals to different data receiving ends simultaneously, so as to realize integration of a plurality of transmitting interfaces, increase the port density of the light emitting device 10, and reduce the manufacturing cost and the power consumption of the light emitting device 10.
Illustratively, each optical modulation component 122 includes an active state and an inactive state, the active state refers to a state in which the optical modulation component 122 needs to modulate the optical signal, and the inactive state refers to a state in which the optical modulation component 122 does not need to modulate the optical signal. The optical power distribution module 121 may perform splitting of the initial continuous optical signal according to the state of each optical modulation module 122. For example, the optical modulation component 122 connected to the optical power distribution component 121 includes a first optical modulation component, a second optical modulation component, and a third optical modulation component, where the first optical modulation component and the second optical modulation component are in an operating state, and the third optical modulation component is in a non-operating state, so that the optical power distribution component 121 only needs to configure the distribution configuration parameters for the output ends 1212 corresponding to the first optical modulation component and the second optical modulation component, and perform branching on the initial continuous optical signal according to the branching configuration parameters to obtain a first modulated optical signal corresponding to the first optical modulation component and a second modulated optical signal corresponding to the second optical modulation component.
In some embodiments, referring to fig. 5, the optical modulation element 122 is connected to the electrical signal emission source 30; the optical modulation component 122 is further configured to obtain timing information corresponding to the electrical signal emitted by the electrical signal emission source 30; the optical power distribution module 121 is further configured to obtain a splitting configuration parameter according to the timing information corresponding to the electrical signal output by the optical modulation module 122, and split the initial continuous optical signal according to the splitting configuration parameter to obtain a multi-path split optical signal.
The electrical signal emission source 30 may be an internal device of the light emitting device 10, or may be an external device to the light emitting device 10, for example, a terminal device connected to the optical module 100. The specific deployment position of the electrical signal emission source 30 may be selected according to the actual application scenario, and the exemplary embodiment of the present disclosure is not limited thereto.
The electrical signal emitting source 30 is connected to each of the optical modulation assemblies 122, and it is understood that each of the optical modulation assemblies 122 may be connected to the same electrical signal emitting source 30, or may be connected to different electrical signal emitting sources 30. The electrical signal transmission source 30 transmits an electrical signal to the corresponding optical modulation component 122, and the optical modulation component 122 acquires timing information of the received electrical signal and transmits the timing information to the optical power distribution component 121. The electrical signal refers to a signal carried by a voltage, a current, an electromagnetic wave, or the like, and the timing information may be binary data containing only 0 and 1.
The optical power distribution module 121 is a device that divides one input signal energy into two or more paths of equal or unequal energy. The optical power distribution module 121 may obtain the splitting configuration parameters corresponding to each optical modulation module 122 according to the received timing information of each optical modulation module 122, and further split the initial continuous optical signal according to the splitting configuration parameters, so as to output the corresponding optical signal to each optical modulation module 122.
For example, the control component 14 may further obtain an electrical signal to be modulated by each optical modulation component 122, so as to send the splitting configuration parameter corresponding to each optical modulation component 122 to the optical power distribution component 121 according to the electrical signal to be modulated, and then the optical power distribution component 121 splits the initial continuous optical signal according to the splitting configuration parameter, so as to output the corresponding optical signal to each optical modulation component 122.
It should be noted that, the initial continuous optical signal may also be split according to other methods, for example, the initial continuous optical signal is split according to information such as frequency and amplitude of the electrical signal, for example, preset splitting configuration parameters are stored in the control component 14, the optical power distribution component 121 splits the initial continuous optical signal according to preset splitting configuration parameters, and the like, which is not limited in the exemplary embodiment of the present disclosure.
In some embodiments, the optical modulation component 122 is further configured to acquire an electrical signal emitted by the electrical signal emission source 30, and modulate a path of optical signal output by the optical power distribution component 121 according to the electrical signal to obtain a path of modulated optical signal.
The optical modulation component 122 can change certain parameters of the optical signal, such as amplitude, frequency, phase, polarization state, duration, etc. according to the electrical signal.
The optical signal may be modulated according to timing information, frequency, amplitude, etc. of the electrical signal. For example, the timing information is loaded into the optical modulation component 122, and the optical signal emitted by the optical power distribution component 121 is modulated, so that the light emitted by the optical modulation component 122 is characterized by the timing information, so as to perform the electro-optical conversion, that is, convert the electrical signal into the optical signal.
The optical modulation component 122 may modulate the transmitted electrical signal on the amplitude of the optical signal based on intensity modulation to obtain a modulated optical signal; the optical modulation component 122 may also modulate the transmitted information on the polarization state of the optical signal based on polarization modulation to obtain a modulated optical signal, and the optical modulation method of the optical modulation component 122 is not limited in the exemplary embodiment of the present disclosure.
In some embodiments, referring to fig. 6, the number of the optical power monitoring devices 13 is plural, and the optical power monitoring devices are disposed corresponding to the optical modulation device 122; the optical power monitoring component 13 is configured to monitor the transmission power of one path of modulated optical signal output by the optical modulation component 122.
The optical power monitoring component 13 is configured to obtain the transmitting power of the modulated optical signal, and may monitor the optical intensity corresponding to the modulated optical signal to obtain the transmitting power of the modulated optical signal. The light intensity is equal to the light power of a unit area, and the corresponding transmitting power of the modulated light signal within the preset time can be obtained by detecting the light intensity of the modulated light signal within the preset time.
As shown in fig. 6, the light emitting device 10 includes N light modulation components 122, each light modulation component 122 further includes a transmitting interface 1221, and the transmitting interface 1221 is used for transmitting a modulated light signal. The number of the optical power monitoring assemblies 13 is plural, and each optical power monitoring assembly 13 is arranged corresponding to the transmitting interface 1221 of the optical modulation assembly 122, so as to monitor each optical modulation assembly 122 respectively, and obtain the transmitting power of the multi-path modulated optical signal.
The transmission power of the modulated optical signal emitted by the optical modulation component 122 is an important parameter that affects the transmission distance of the modulated optical signal. When the transmitting power of the modulated optical signal is too small, the receiving optical power of the data receiving end is smaller than the receiving sensitivity of the data receiving end, and the data receiving end cannot normally receive the modulated optical signal. When the transmitting power of the modulated optical signal is too high, although the receiving optical power range of the data receiving end can be achieved by adding an attenuator to the data receiving end, the required bias current is also too large, which affects the transmission quality of the modulated optical signal and the service life of the data receiving end. Because the modulated optical signals sent between each optical modulation component 122 may not be the same, and the data receiving end connected to each optical modulation component 122 may also be different, the transmitting power of the modulated optical signals output by each optical modulation component 122 is monitored, so that the transmitting power of the obtained multi-path modulated optical signals is ensured to be more accurate.
In some embodiments, the control component 14 is further configured to obtain a total optical power of the modulated optical signals according to the emission power of one path of modulated optical signals output by each optical power monitoring component 13, obtain a preset total optical power of the modulated optical signals according to optical power distribution and a preset optical power of the multiple paths of modulated optical signals output by the modulation component 12, and generate a first control instruction according to the total optical power and the preset total optical power, so that the light source component 14 adjusts the power of the initial continuous optical signal to be output according to the first control instruction.
The control component 14 is connected to the optical power monitoring component 13, and receives the transmitting power of one path of modulated optical signal output by each power monitoring component 13, so as to obtain the total optical power according to the transmitting power of each path of modulated optical signal. And then acquiring the preset optical power of each path of modulation optical signal to obtain the preset total optical power. The preset total optical power may be a specific value or a set of multiple values. If the total optical power is not equal to the preset total optical power, or the total optical power is not within the range of the preset total optical power, the control component 14 sends a corresponding first control instruction to the light source component 11, so that the light source component 11 enhances or reduces the optical power of the initial continuous optical signal.
The light source assembly 11 may adjust parameters such as a current value and a voltage value of the corresponding circuit according to the first control instruction, so as to emit an initial continuous light signal with a corresponding power. Illustratively, the light source module 11 may adjust the light source according to the first control instruction, for example, adjust the external light source connected by the external light source interface 112, so that the connected external light source may emit an initial continuous light signal with corresponding power. The specific method for adjusting the optical power of the initial continuous optical signal by the light source assembly 11 may be flexibly selected according to the actual application, which is not limited in the embodiment of the present disclosure.
In some embodiments, the control component 14 is further configured to obtain the emission power of the modulated optical signal output by the optical power monitoring component 13, obtain the preset optical power of the modulated optical signal output by the optical power distribution and modulation component 12, and generate a second control instruction according to the emission power and the preset optical power, so that the optical power distribution and modulation component 12 adjusts the shunt configuration parameter of the optical power distribution component 121 according to the second control instruction.
The control component 14 receives the emission power of the modulated optical signal output by each power monitoring component 13, and then obtains a preset optical power of the modulated optical signal, where the modulated optical signal corresponding to the preset optical power and the modulated optical signal corresponding to the emission power belong to the same modulated optical signal. The preset optical power may be a specific value or a set of multiple values. If the transmission power is not equal to the preset optical power, or the transmission power is not within the range of the preset optical power, the control component 14 sends a corresponding second control instruction to the optical power distribution component 121, so that the optical power distribution component 121 adjusts the shunt configuration parameter corresponding to the modulated optical signal, and further the optical power distribution component 121 enhances or reduces the transmission power of the modulated optical signal.
It will be appreciated that since the optical power distribution and modulation assembly 12 may transmit the multiplexed optical signal simultaneously, the second control instruction may be a signal that performs optical power adjustment on the multiplexed optical signal. After receiving the second control instruction, the optical power distribution module 121 obtains the modulated optical signal to be adjusted according to the second control instruction, so as to adjust the shunt configuration parameters corresponding to the modulated optical signal to be adjusted according to the second control instruction. For example, parameter values such as a capacitance parameter, a resistance parameter, and a bias current parameter of a circuit corresponding to the output end 1212 corresponding to the modulated optical signal to be adjusted may be adjusted, so that the adjusted optical power distribution assembly 121 outputs an optical signal with corresponding power, and when the optical modulation assembly 122 modulates the optical signal according to the electrical signal, the optical power of the optical signal can meet the requirement of the optical modulation assembly 122, so as to output a modulated optical signal with preset optical power.
Referring to fig. 7, fig. 7 is a flowchart of a light emitting method in an embodiment of the present disclosure, which is applied to the light emitting device described in the above embodiment, and the light emitting method in the exemplary embodiment of the present disclosure is described below with reference to fig. 7. As shown in fig. 7, the light emission method in the exemplary embodiment of the present disclosure includes steps S710 to S740, which are described in detail as follows:
step S710, obtaining the initial continuous optical signal, and splitting the initial continuous optical signal according to the splitting configuration parameters to obtain multiple paths of optical signals.
The initial continuous optical signal may be generated by at least one of an internal light source and an external light source, and the optical power distribution component receives the initial continuous optical signal and then splits the initial continuous optical signal according to a splitting configuration parameter to obtain a plurality of paths of optical signals. The splitting configuration parameter refers to a parameter corresponding to the optical power distribution component when the initial continuous optical signal is split.
For example, the optical power distribution module includes a plurality of output ends for outputting optical signals, and the shunt configuration parameter may be a parameter value, such as a capacitance parameter, a resistance parameter, and a bias current parameter, of the circuit corresponding to the output end, which is obtained by calculating, by the optical power distribution module, according to a preset optical power of an optical signal to be output corresponding to the output end. It is understood that each output terminal may have different splitting configuration parameters configured for each output terminal 1212 by the optical power distribution assembly 121 due to different parameters of the optical signal to be output, wherein the parameters of the optical signal include, but are not limited to, optical power parameters, optical wavelength parameters, and the like.
And S720, respectively modulating the multiple paths of optical signals to obtain multiple paths of modulated optical signals.
The optical power distribution component sends each path of optical signal to the corresponding optical modulation component, and the optical modulation component refers to a modulation device which superimposes a signal carrying information on a carrier optical wave and is used for modulating parameters of the optical signal to obtain the corresponding modulated optical signal. For example, one or more parameters of amplitude, phase, intensity, polarization state of the optical signal are modulated.
Every output of optical power distribution subassembly all corresponds and is provided with an optical modulation subassembly, a plurality of optical modulation subassemblies can modulate multichannel light signal respectively, obtain multichannel optical modulation signal, and every optical modulation subassembly can connect different data receiving terminals, so that multichannel optical modulation signal sends corresponding optical modulation signal to different data receiving terminals respectively, and then light emitting device can send optical modulation signal to different data receiving terminals simultaneously, in order to realize the integration of a plurality of transmission interfaces, the port density of light emitting device has been increased, the manufacturing cost and the consumption of light emitting device have been reduced.
Each optical modulation component comprises an operating state and a non-operating state, the operating state refers to a state that the optical modulation component needs to modulate an optical signal, and the non-operating state refers to a state that the optical modulation component does not need to modulate the optical signal. The optical power distribution assembly may perform splitting of the initial continuous optical signal according to the state of each optical modulation assembly. For example, the optical modulation component connected to the optical power distribution component includes a first optical modulation component, a second optical modulation component, and a third optical modulation component, where the first optical modulation component and the second optical modulation component are in a working state, and the third optical modulation component is in a non-working state, so that the optical power distribution component only needs to configure the distribution configuration parameters for the output ends corresponding to the first optical modulation component and the second optical modulation component, and perform branching on the initial continuous optical signal according to the branching configuration parameters to obtain a first modulated optical signal corresponding to the first optical modulation component and a second modulated optical signal corresponding to the second optical modulation component.
Step S730, monitoring the transmission power of the multi-path modulated optical signal.
The light emitting device further comprises a light power monitoring assembly, wherein the light power monitoring assembly is arranged corresponding to the light modulation assemblies and used for monitoring the emitting power of the modulated light signals output by each light modulation assembly. The light intensity is equal to the light power of a unit area, and the corresponding transmitting power of the modulated light signal within the preset time can be obtained by detecting the light intensity of the modulated light signal within the preset time.
Further, since the modulated optical signals sent between each optical modulation assembly 122 may be different, and the data receiving end connected to each optical modulation assembly 122 may also be different, the optical power monitoring assemblies are respectively deployed to each optical modulation assembly to respectively monitor the transmitting power of the modulated optical signals output by each optical modulation assembly, thereby ensuring that the transmitting power of the obtained multi-path modulated optical signals is more accurate.
Step S740, adjusting the power of the initial continuous optical signal to be output by the optical source module and the shunt configuration parameter of the optical power distribution and modulation module according to the transmitting power of the multi-path modulated optical signal.
The control component is connected with the optical power monitoring components and receives the transmitting power of one path of modulation optical signals output by each power monitoring component so as to obtain the total optical power according to the transmitting power of each path of modulation optical signals. And then acquiring the preset optical power of each path of modulated optical signal to obtain the preset total optical power, wherein the preset total optical power can be a specific value or a set of multiple values. If the total optical power is not equal to the preset total optical power or the total optical power is not within the range of the preset total optical power, the control component sends a corresponding first control instruction to the light source component so that the light source component can enhance or reduce the optical power of the initial continuous optical signal.
The light source component can adjust parameters such as a current value, a voltage value and the like of the corresponding circuit according to the first control instruction so as to emit an initial continuous light signal with corresponding power; the light source assembly may adjust the light source according to the first control instruction, for example, adjust an external light source connected to the external light source interface, so that the connected external light source may emit an initial continuous light signal of a corresponding power. The specific method for adjusting the optical power of the initial continuous optical signal by the light source module may be flexibly selected according to the actual application, which is not limited in the embodiments of the present disclosure.
And if the transmitting power of the modulated optical signal is not equal to the preset optical power or the transmitting power is not within the range of the preset optical power, the control component sends a corresponding second control instruction to the optical power distribution component so that the optical power distribution component adjusts the shunt configuration parameter corresponding to the modulated optical signal, and further the optical power distribution component enhances or reduces the optical power of the modulated optical signal.
It will be appreciated that the second control instruction may be a signal for optical power adjustment of the multiplexed modulated optical signal, since the optical power distribution and modulation component may transmit the multiplexed modulated optical signal simultaneously. And after receiving the second control instruction, the optical power distribution assembly acquires the modulated optical signal to be adjusted according to the second control instruction, so as to respectively adjust the shunt configuration parameters corresponding to the modulated optical signal to be adjusted according to the second control instruction. For example, parameter values such as a capacitance parameter, a resistance parameter, and a bias current parameter of a circuit corresponding to an output end corresponding to a modulated optical signal to be adjusted may be adjusted, so that the adjusted optical power distribution assembly outputs an optical signal with corresponding power, and when the optical modulation assembly modulates the optical signal according to an electrical signal, the optical power of the optical signal can meet the requirement of the optical modulation assembly, so as to output a modulated optical signal with preset optical power.
This is disclosed through being divided into multichannel light signal with initial continuous light signal branch to modulate multichannel light signal respectively, so that light emission device can export multichannel modulation light signal simultaneously, thereby realize the sharing of light source, reduce light emission device's manufacturing cost and consumption, and integrate a plurality of transmission ports, improved port density. Meanwhile, the transmitting power of the modulated optical signal is monitored in real time, the power of the initial continuous optical signal to be output by the light source assembly is adjusted according to the transmitting power of the modulated optical signal, so that the optical power of the initial continuous optical signal of the light emitting device can meet the total optical power of the multi-path modulated optical signal, the shunt configuration parameters of the optical power distribution and modulation assembly are adjusted, the optical power distribution and modulation assembly can accurately shunt the initial continuous optical signal, the transmitting power of the multi-path modulated optical signal is further ensured, and the stability of the multi-path modulated optical signal is ensured.
It should be noted that although the various steps of the fault monitoring method of the present disclosure are depicted in the drawings in a particular order, this does not require or imply that the steps must be performed in this particular order, or that all of the depicted steps must be performed, to achieve the desired results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step execution, and/or one step broken down into multiple step executions, etc.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice in the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Claims (7)
1. A light emitting device, characterized in that the light emitting device comprises:
a light source assembly for providing an initial continuous light signal;
the optical power distribution and modulation component comprises an optical power distribution component and a plurality of optical modulation components, and the optical power distribution component is used for branching the initial continuous optical signal according to branching configuration parameters to obtain a plurality of paths of optical signals; the plurality of optical modulation components are used for respectively modulating each optical signal of the plurality of optical signals output by the optical power distribution component to obtain a plurality of paths of modulated optical signals;
the optical power monitoring component is used for monitoring the transmitting power of the multi-path modulation optical signal output by the optical power distribution and modulation component;
the control component is used for adjusting the power of an initial continuous optical signal to be output by the light source component and the shunt configuration parameters of the optical power distribution and modulation component according to the emission power of the multi-path modulation optical signal output by the optical power monitoring component;
the control component is further configured to obtain a total optical power of the modulated optical signals according to the emission power of each of the multiple channels of modulated optical signals output by the optical power monitoring component, obtain a preset total optical power of the modulated optical signals according to the optical power distribution and preset optical power of the multiple channels of modulated optical signals output by the modulation component, and generate a first control instruction according to the total optical power and the preset total optical power, so that the light source component adjusts the power of the initial continuous optical signal to be output according to the first control instruction;
the control component is further configured to obtain an emission power of the modulated optical signal output by the optical power monitoring component, obtain a preset optical power of the modulated optical signal output by the optical power distribution and modulation component, and generate a second control instruction according to the emission power and the preset optical power, so that the optical power distribution and modulation component adjusts the shunt configuration parameter of the optical power distribution component according to the second control instruction.
2. The light emitting device of claim 1, wherein the light modulating component is coupled to an electrical signal emitting source;
the optical modulation component is also used for acquiring time sequence information corresponding to the electric signal transmitted by the electric signal transmitting source;
the optical power distribution assembly is further configured to obtain the shunting configuration parameter according to timing information corresponding to the electrical signal output by the optical modulation assembly, and shunt the initial continuous optical signal according to the shunting configuration parameter to obtain a multi-path shunting optical signal.
3. The light emitting device of claim 1, wherein the light modulating component is coupled to an electrical signal emitting source;
the optical modulation component is further configured to obtain an electrical signal emitted by the electrical signal emission source, and modulate one path of optical signal output by the optical power distribution component according to the electrical signal, so as to obtain the one path of modulated optical signal.
4. The light emitting device according to claim 1, wherein the optical power monitoring assembly is provided in plurality and is disposed corresponding to the optical modulation assembly;
the optical power monitoring component is used for monitoring the transmitting power of one path of modulated optical signals output by the optical modulation component.
5. The light-emitting device according to any one of claims 1 to 4, wherein the light source assembly comprises an internal light source connected to the optical power distribution and modulation assembly and an external light source interface for connecting an external light source.
6. A light module characterized in that it comprises a light emitting arrangement according to any of claims 1 to 5.
7. A light emitting method applied to the light emitting device of any one of claims 1 to 5, the method comprising:
acquiring an initial continuous optical signal, and carrying out shunting on the initial continuous optical signal according to shunting configuration parameters to obtain a plurality of paths of optical signals;
respectively modulating the multiple paths of optical signals to obtain multiple paths of modulated optical signals;
monitoring the transmission power of the multi-path modulation optical signal;
according to the emission power of the multi-path modulation optical signals, adjusting the power of initial continuous optical signals to be output by the light source assembly and the shunt configuration parameters of the optical power distribution and modulation assembly;
the adjusting the power of the initial continuous optical signal to be output by the light source module includes:
obtaining the total optical power of the modulated optical signals according to the transmitting power of each path of modulated optical signals in the multi-path modulated optical signals; obtaining preset total optical power of the modulated optical signals according to the preset optical power of the multi-path modulated optical signals; generating a first control instruction according to the total optical power and the preset total optical power, so that the light source assembly adjusts the power of the initial continuous optical signal to be output according to the first control instruction;
the adjusting the shunt configuration parameters of the modulation component of the optical power distribution and modulation component includes:
and acquiring the transmitting power of the modulated optical signal and the preset optical power of the modulated optical signal, and generating a second control instruction according to the transmitting power and the preset optical power so that the optical power distribution and modulation component adjusts the shunt configuration parameters of the optical power distribution component according to the second control instruction.
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| US7062289B2 (en) * | 2001-02-27 | 2006-06-13 | Huawei Technologies Co., Ltd. | Method and apparatus of multi-carrier power control of base station in broad-band digital mobile communication system |
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