CN115483978A - Multi-light-source self-heating modulation module and method and optical fiber coding identification system and method - Google Patents

Abstract

A multi-light-source self-heating modulation module and method and an optical fiber coding identification system and method are provided. The light source selection unit is used for selecting one target pulse light source in the multiple pulse light sources and starting the pulse light sources to work, based on the relation between the light source temperature rise and the wavelength, the main control unit accurately calculates the self-rise Wen Shichang required by the pulse light source with the target wavelength, so that the communication time of the target pulse light source and the pulse control unit is determined, the generation of the pulse light wave with the target wavelength is ensured, and after the pulse light wave passes through the self-rise Wen Shichang, the pulse control unit further modulates the pulse light wave with the target wavelength and the duration to finally obtain the pulse light wave with the target wavelength and duration. Therefore, the multi-light-source self-heating modulation module provided by the embodiment of the invention changes the wavelength of the emitted pulse light wave by means of self-heating of the working pulse light source, realizes temperature modulation of the pulse light wave with different wavelengths by accurately calculating through the control unit, and greatly reduces the cost of the device compared with the temperature modulation by adopting a temperature modulation device.

Description

Multi-light source self-heating modulation module and method, and optical fiber code recognition system and method

technical field

The invention relates to the field of optical fiber communication, in particular to a multi-light source self-heating modulation module and method, and an optical fiber code identification system and method.

Background technique

In the field of optical fiber communication, optical fiber coding, as the only technical means for identifying the optical fiber medium, is composed of multiple fiber gratings with different wavelengths. The optical fiber coding recognition system is an optical detection system that accurately identifies the wavelength of the fiber grating. The existing optical fiber code recognition system mainly uses a wavelength detector (AD acquisition card) for a long time for a single acquisition, and the main light wave used is a non-communication wavelength. The central wavelength light wave bandwidth emitted by a single laser is too large, resulting in insufficient recognition accuracy. Therefore, these problems seriously affect the application of optical fiber coding in the PON network, and affect the identification, management and operation of the PON network.

At present, in order to improve the identification accuracy of optical fiber codes, related technologies will use multiple tunable laser modules with different center wavelengths to patrol one by one to emit light, and cooperate with the rapid identification module composed of APD photoelectric collector and AD acquisition card, and can complete a single center at one time. The wavelength light source collects the reflected signal throughout the fiber link, and finally realizes the rapid identification of the fiber code. This technology will combine the temperature modulation device to act on the light-emitting chip to achieve multiple changes in the center wavelength of a single light source, and then realize the transmission of a single light source. Light waves with different central wavelengths are used to improve the recognition accuracy of optical fiber codes. Since a large number of tunable laser modules will be used as light sources, a corresponding number of temperature modulation devices, such as semiconductor coolers (TECs), will be equipped, resulting in relatively high cost, and the size of the semiconductor coolers is small. The manufacturing process above is relatively difficult, thus indirectly increasing the manufacturing cost of the overall device.

Contents of the invention

The present invention aims to solve at least one of the technical problems existing in the prior art. For this reason, the present invention proposes a multi-light source self-heating modulation module, which solves the problem of high cost of the temperature modulation device used in the current optical fiber code identification device.

The invention also provides a multi-light source self-heating modulation method, a computer-readable storage medium, a multi-light source self-heating modulation optical fiber coding identification system and a multi-light source self-heating modulation optical fiber coding identification system method.

The multi-light source self-heating modulation module according to the embodiment of the first aspect of the present invention includes:

A plurality of pulsed light sources, each of which is self-heating to change the wavelength as the working time increases;

A light source selection unit, the multiple input terminals of which are respectively connected to the output terminals of multiple pulsed light sources, and the light source selection unit is used to select one of the multiple pulsed light sources for light wave output;

A pulse control unit, the input end of which is connected to the output end of the light source selection unit, and the output end is used to output pulse light waves corresponding to the wavelength and length of the optical fiber code to be identified;

The main control unit is electrically connected to the multiple pulse light sources, the light source selection unit, and the pulse control unit respectively.

The multi-light source self-heating modulation module according to the embodiment of the present invention has at least the following beneficial effects:

By using the light source selection unit to select one of the multiple pulse light sources, that is, the target pulse light source, and start the work, based on the relationship between the temperature rise of the light source and the wavelength, the main control unit accurately calculates the pulse light source required to achieve the target wavelength. According to the self-heating time, the communication time between the target pulse light source and the pulse control unit is determined according to the self-heating time, so as to ensure the generation of the pulsed light wave of the target wavelength. Obtain the pulsed light wave of the target wavelength and length. Therefore, for the multi-light source self-heating modulation module of the embodiment of the present invention, it relies on the working self-heating of the pulse light source to change the wavelength of the emitted pulse light wave, and realizes the temperature modulation of pulse light waves with different wavelengths through accurate calculation by the control unit. Because the temperature modulation device is used for temperature modulation, the cost of the device itself is greatly reduced.

According to some embodiments of the present invention, the light source selection unit adopts an SOA optical switch, and multiple input ends of the SOA optical switch are respectively connected to output ends of a plurality of the pulsed light sources, and the output ends of the SOA optical switch are connected to The input end of the pulse control unit is connected.

According to some embodiments of the present invention, the light source selection unit adopts a wavelength division multiplexer, and multiple input terminals of the wavelength division multiplexer are respectively connected to output terminals of multiple pulsed light sources, and the wavelength division multiplexer The output end of the controller is connected to the input end of the pulse control unit, and the wavelength division multiplexer is electrically connected to the main control unit.

According to some embodiments of the present invention, the pulse control unit uses an electro-optic modulator, the input end of the electro-optic modulator is connected to the output end of the light source selection unit, and the output end of the electro-optic modulator is used for outputting Identifying the pulsed light waves corresponding to the wavelength and duration of the optical fiber code, the electro-optic modulator is electrically connected to the main control unit.

According to some embodiments of the present invention, the pulse control unit adopts a SOA modulator, the input end of the SOA modulator is connected to the output end of the light source selection unit, and the output end of the SOA modulator is used for outputting and communicating with the The optical fiber to be identified encodes a pulse light wave corresponding to a wavelength and a length, and the SOA modulator is electrically connected to the main control unit.

The multi-light source self-heating modulation method according to the second embodiment of the present invention is applied to the multi-light source self-heating modulation module described in any one of the first method embodiments of the present invention, including the following steps:

determining a target pulse light source from multiple pulse light sources, and using the light source selection unit to connect the pulse control module to the target pulse light source;

Turn on the target pulse light source, and determine the self-heating duration of the light source according to the relationship between the temperature rise of the target pulse light source and the wavelength;

Perform temperature modulation on the target pulsed light source under the self-heating time of the light source to obtain the target wavelength pulsed light wave and output it to the pulse control unit by the light source selection unit, and the target wavelength pulsed light wave represents the The optical fiber encodes pulsed light waves of corresponding wavelengths;

Turn on the pulse control unit to receive and modulate the target wavelength pulsed light wave to output the target duration pulsed light wave, the target duration pulsed light wave represents the pulsed light wave corresponding to the wavelength and length of the optical fiber code to be identified;

Turn off the pulse control unit and the target pulse light source.

The multi-light source self-heating modulation method according to the embodiment of the present invention has at least the following beneficial effects:

By executing the multi-light source self-heating modulation method of the embodiment of the present invention on the multi-light source self-heating modulation module of the embodiment of the present invention, so that by using the light source selection unit to select one of the multiple pulsed light sources, that is, the target pulsed light source, and start the work, Based on the relationship between the temperature rise of the light source and the wavelength, the main control unit accurately calculates the self-heating time required for the pulse light source to reach the target wavelength, and determines the connection time between the target pulse light source and the pulse control unit according to the self-heating time. In order to ensure the generation of the pulsed light wave with the target wavelength, after the self-heating period, the pulse control unit will further modulate to finally obtain the pulsed light wave with the target wavelength and length. Therefore, for the multi-light source self-heating modulation module of the embodiment of the present invention, it relies on the working self-heating of the pulse light source to change the wavelength of the emitted pulse light wave, and realizes the temperature modulation of pulse light waves with different wavelengths through accurate calculation by the control unit. Because the temperature modulation device is used for temperature modulation, the cost of the device itself is greatly reduced.

According to the computer-readable storage medium of the embodiment of the third aspect of the present invention, the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to cause a computer to execute the computer-readable storage medium described in the second aspect of the present invention. The multi-light source self-heating modulation method described above.

It can be understood that the beneficial effect of the above third aspect compared with the related art is the same as that of the above second aspect compared with the related art, and reference can be made to the relevant description in the above first aspect, and will not be repeated here. .

According to the fourth aspect of the present invention, the multi-light source self-thermally modulated optical fiber code identification system includes:

The multi-light source self-heating modulation module according to any one of the embodiments of the first aspect of the present invention;

A circulator includes a first port, a second port, and a third port, the first port is connected to the output end of the pulse control unit of the multi-light source self-heating modulation module;

Optical fiber coding, connected to the second port;

A photoelectric collection unit, the input end of which is connected to the third port, and the photoelectric collection unit is used to process the pulse light wave and output an electrical signal;

An analog-to-digital conversion unit whose input end is electrically connected to the output end of the spectrum acquisition unit, and whose output end is electrically connected to the main control unit of the multi-light source self-heating modulation module.

According to the embodiment of the present invention, the multi-light source self-thermal modulation optical fiber code recognition system has at least the following beneficial effects:

Under the operation of the main control unit, the multi-light source self-heating modulation module sends the required pulsed light waves of specific wavelengths to the optical fiber code, and the optical fiber codes reflect the pulsed light waves of specific wavelengths and send them back to the photoelectric acquisition unit and the analog-to-digital conversion unit. After processing, the rapid identification of the optical fiber code can be realized. At the same time, the multi-light source self-heating modulation optical fiber code recognition system of the embodiment of the present invention adopts a multi-light source self-heating modulation module that relies on the pulse light source to work and self-heat, thereby reducing the overall cost of the system.

According to the embodiment of the fifth aspect of the present invention, the optical fiber code identification method for self-thermal modulation of multiple light sources is applied to the optical fiber code identification system for self-thermal modulation of multiple light sources as described in the embodiment of the fourth aspect of the present invention, including the following steps:

The multi-light source self-thermal modulation module outputs pulsed light waves corresponding to the wavelength and length of the optical fiber code to the circulator, and continue to transmit to the optical fiber code;

The photoelectric acquisition unit receives the reflected light wave after the optical fiber code reflects the pulsed light wave and performs photoelectric conversion processing to obtain an analog electrical signal;

The analog-to-digital conversion unit receives the analog electrical signal and performs analog-to-digital conversion processing to obtain a digital signal;

The main control unit receives and processes the digital signal to complete the identification of the optical fiber code.

According to the embodiment of the present invention, the multi-light source self-thermal modulation optical fiber code recognition method has at least the following beneficial effects:

Apply the fiber code recognition method for multi-light source self-thermal modulation of the embodiment of the present invention to the multi-light source self-thermal modulation fiber code recognition system, under the operation of the main control unit, the multi-light source self-thermal modulation module sends out the required specific The pulsed light wave of the wavelength reaches the optical fiber code, and the optical fiber code reflects the pulsed light wave of a specific wavelength and sends it back to the photoelectric acquisition unit and the analog-to-digital conversion unit. After processing, the rapid identification of the optical fiber code can be realized.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and comprehensible from the description of the embodiments in conjunction with the following drawings, wherein:

Fig. 1 is a schematic structural diagram of an optical fiber code recognition system for self-thermal modulation of multiple light sources according to an embodiment of the present invention;

Fig. 2 is a timing diagram of a multi-light source self-heating modulation module according to an embodiment of the present invention;

Fig. 3 is a flowchart of a self-heating modulation method for multiple light sources according to an embodiment of the present invention;

Fig. 4 is a flowchart of an optical fiber code identification method for self-thermal modulation of multiple light sources according to an embodiment of the present invention.

Reference signs:

Multi-light source self-heating modulation module 100; pulse light source 110; light source selection unit 120; pulse control unit 130; main control unit 140;

A circulator 210 ; an optical fiber code 220 ; a photoelectric collection unit 230 ; and an analog-to-digital conversion unit 240 .

detailed description

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

In the description of the present invention, if the first, second, etc. are described only for the purpose of distinguishing technical features, it cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implying Indicates the sequence of the indicated technical features.

In the description of the present invention, it should be understood that when it comes to orientation descriptions, for example, the orientation or positional relationship indicated by up, down, etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description , rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention.

In the description of the present invention, it should be noted that, unless otherwise clearly defined, words such as setting, installation, and connection should be understood in a broad sense, and those skilled in the art can reasonably determine that the above words are included in the present invention in combination with the specific content of the technical solution. specific meaning.

The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the embodiments described below are some, not all, embodiments of the present invention.

Referring to FIG. 1 , the multi-light source self-heating modulation module 100 provided by the embodiment of the present invention includes multiple pulsed light sources 110 , a light source selection unit 120 , a pulse control unit 130 , and a main control unit 140 . Each pulsed light source 110 is all self-heating to change the wavelength as the working hours increase; a plurality of input ends of the light source selection unit 120 are respectively connected with output ends of a plurality of pulsed light sources 110, and the light source selection unit 120 is used to select from a plurality of pulsed light sources 110 Select one of them to output the light wave; the input end of the pulse control unit 130 is connected to the output end of the light source selection unit 120, and the output end is used to output the pulse light wave corresponding to the wavelength and length of the optical fiber code 220 to be identified; the main control unit 140 is respectively connected with multiple The pulse light source 110, the light source selection unit 120, and the pulse control unit 130 are electrically connected.

Specifically, as shown in FIG. 1 , the multi-light source self-heating modulation module 100 of the embodiment of the present invention is shown in the dotted line box in the figure, and the main control unit 140 controls the switches of the multiple pulsed light sources 110 and the switch of the light source selection unit 120 respectively. And switching, the switch of the pulse control unit 130. For the pulsed light wave to obtain the target wavelength and length, firstly connect the light source selection unit 120 to the target pulsed light source in the plurality of pulsed light sources 110, then turn on the target pulsed light source, make it start to work and perform temperature self-heating modulation, when the required modulation is completed After the duration, the pulsed light wave of the target wavelength is output to the pulse control unit 130 , and after being modulated by the pulse control unit 130 , the pulsed light wave of the target wavelength and length is finally obtained, which is output to the corresponding optical fiber code 220 to be identified.

Further, referring to FIG. 2 , FIG. 2 is a timing diagram of the multi-light source self-heating modulation module 100. For the light source selection unit 120, the optical switch used in it can realize the selection and aggregation of multiple light sources. The process takes a certain amount of time. At the same time, for an optical switch, for example, the time to switch port 16 to port 1 will be longer than the time to switch port 1 to port 2. Therefore, in order to ensure stability, it is necessary to determine the longest stable time. In practice Generally 100ms. Therefore, whenever the light source selection unit 120 is switched and connected to multiple pulsed light sources 110 , it is necessary to wait for the longest stable time before turning on the corresponding target pulsed light source.

Continuing to refer to Figure 2, the target pulsed light source continues to generate heat, and its internal heat collection will modulate the wavelength. The change law of its temperature and wavelength is 0.1nm/degree, that is, every time the temperature rises by 1 degree, the wavelength increases by 0.1nm. Further according to According to the calculation and actual test, the corresponding relationship between the self-heating duration and the wavelength is roughly as follows: a wavelength change of 4nm requires 60ms of heat collection time, so when the temperature collection completes the required self-heating duration, the pulsed light wave can be transmitted to the optical fiber code 220 to be identified. At the same time, when the target pulsed light source is working and generating heat, the pulsed light waves are actually continuously output. Since the wavelength is constantly changing and the continuously output pulsed light waves are not what we need, the pulse control unit 130 is used to control the output of the pulsed light waves. In practice, the maximum duration is generally 1000ns, that is, when the target pulse light source is continuously self-heating, the pulse wavelength will reach the pulse control unit 130, but the pulse control unit 130 will not be turned on to output the pulse light wave. When the required After the temperature modulation duration, the pulse control unit 130 will turn on the maximum duration of 1000ns to output the pulse light wave with the target wavelength and duration. It should be noted that since the time of 1000 ns is very short, the wavelength change of the target pulsed light source under self-heating modulation during this time can be ignored.

It should also be noted that in the temperature modulation of the target pulsed light source, the wavelength change corresponding to the working self-heating duration is very stable, and its error is small, and the error can basically be controlled to be less than 0.05nm, that is, in some embodiments, when When performing temperature modulation, when the wavelength of the pulsed light wave reaches the target pulse wavelength minus 0.05 nm, the pulse control unit 130 can be turned on for further processing.

In this embodiment, by using the light source selection unit 120 to select one of the multiple pulsed light sources 110, that is, the target pulsed light source, and start to work, based on the relationship between the temperature rise of the light source and the wavelength, the main control unit 140 accurately calculates In order to achieve the self-heating time required for the pulsed light source of the target wavelength, and determine the connection time between the target pulsed light source and the pulse control unit 130 according to the self-heating time, so as to ensure the generation of the pulsed light wave of the target wavelength, when the self-heating time is passed After the duration, the pulse control unit 130 will further modulate to finally obtain the pulse light wave with the target wavelength and duration. Therefore, for the multi-light source self-heating modulation module 100 of the embodiment of the present invention, it relies on the working self-heating of the pulse light source 110 to change the wavelength of the emitted pulsed light waves, and realizes the temperature modulation of pulsed light waves with different wavelengths through accurate calculation by the control unit. Compared with using a temperature modulation device for temperature modulation, the cost of the device itself is greatly reduced.

In some embodiments, the light source selection unit 120 adopts an SOA optical switch, and multiple input ends of the SOA optical switch are respectively connected to the output ends of a plurality of pulsed light sources 110, and the output ends of the SOA optical switch are connected to the input end of the pulse control unit 130. .

Specifically, the SOA optical switch uses a semiconductor optical amplifier, and the switching function can be realized by changing the bias voltage of the SOA. When the bias decreases, there is no particle population inversion, thus absorbing the optical signal. When the bias increases, the input signal is amplified. , so when the SOA is in the absorbing and amplifying state, the on-off extinction ratio is large, and at the same time it is easy to integrate, the switching speed is fast, but it is polarization sensitive. In some embodiments, the SOA optical switch adopts an N×N type, that is, it has multiple input terminals and corresponding multiple output terminals. By setting the ports of the SOA optical switch, it can realize the connection and output of a target pulse light source. Corresponding target pulse light wave.

In some embodiments, the light source selection unit 120 uses a wavelength division multiplexer, multiple input terminals of the wavelength division multiplexer are respectively connected to the output terminals of a plurality of pulsed light sources 110, and the output terminals of the wavelength division multiplexer are connected to the pulse control The input end of the unit 130 is connected, and the wavelength division multiplexer is electrically connected with the main control unit 140 .

Specifically, the wavelength division multiplexer can combine two or more optical carrier signals of different wavelengths carrying various information, and couple them to the same optical fiber of the optical line for transmission. The optical signals of different wavelengths are separated by some method. By using a wavelength division multiplexer, it is possible to realize connection to multiple target pulsed light sources and output coupled pulsed light waves, and perform wavelength division multiplexing processing at the receiving end to obtain corresponding multiple target pulsed light waves.

It can be understood that using an optical switch to connect a target pulsed light source alone can better perform temperature modulation to obtain a pulsed light wave of the corresponding target wavelength, so the wavelength division multiplexer used in this embodiment is difficult in actual operation. Relatively larger, therefore, the light source selection unit 120 preferably adopts an optical switch, such as an SOA optical switch.

In some embodiments, the pulse control unit 130 uses an electro-optic modulator, the input end of the electro-optic modulator is connected to the output end of the light source selection unit 120, and the output end of the electro-optic modulator is used to output the wavelength and length corresponding to the optical fiber code 220 to be identified. pulsed light waves, the electro-optic modulator is electrically connected to the main control unit 140 .

Specifically, since the pulse control unit 130 needs to control the output pulse light wave at the nanosecond level, the electro-optic modulator used is actually used as a Q switch. It should be noted that the Q-switch can switch rapidly between very little or very high loss to the laser beam. This device is typically used in laser resonators to enable active Q-switching of lasers, a method of generating short, intense pulses with pulse lengths in the nanosecond range. Q-switches include acousto-optic Q-switches, electro-optic Q-switches, and passive Q-switches. Specifically, the electro-optic Q switch needs to use an electro-optic modulator, which controls the power, phase and polarization of the laser beam through electronic control signals. It usually contains one or two Pockels cells, and sometimes may contain some other optical components, such as polarizers, which work on the principle of the linear electro-optic effect (also known as the Pockels effect), that is, an electric field causes a nonlinear The refractive index change in the crystal is proportional to the strength of the field.

Further, in some embodiments, the acousto-optic Q-switch needs to be used in an acousto-optic modulator, which is a device that can be used to control the power, frequency or spatial direction of a laser beam by using an electronic driving signal. It utilizes the acousto-optic effect, that is, the change of the refractive index by mechanically oscillating pressure with sound waves. The key element of an AOM is a transparent crystal (or a piece of glass) through which light travels. A piezoelectric transducer in contact with the crystal is used to excite sound waves with frequencies on the order of 100 MHz.

In some embodiments, the pulse control unit 130 uses a SOA modulator, the input end of the SOA modulator is connected to the output end of the light source selection unit 120, and the output end of the SOA modulator is used to output the wavelength and length corresponding to the optical fiber code 220 to be identified. pulsed light waves, the SOA modulator is electrically connected to the main control unit 140 .

Specifically, a semiconductor optical amplifier (SOA) can also be used to output nanosecond-level pulsed light waves, and specifically, a nanosecond-level SOA pulse driver is used to ensure that the SOA can work within nanoseconds.

In addition, referring to FIG. 3 , an embodiment of the present invention also provides a multi-light source self-heating modulation method, which is applied to the multi-light source self-heating modulation module 100 according to any embodiment of the present invention, including the following steps:

Determine the target pulse light source from multiple pulse light sources 110, and use the light source selection unit 120 to connect the pulse control module with the target pulse light source;

Turn on the target pulse light source, and determine the self-heating duration of the light source according to the relationship between the temperature rise of the target pulse light source and the wavelength;

The temperature of the target pulsed light source is modulated under the self-heating time of the light source to obtain the pulsed light wave of the target wavelength and output to the pulse control unit 130 by the light source selection unit 120. The pulsed light wave of the target wavelength represents the pulsed light wave of a wavelength corresponding to the optical fiber code 220 to be identified ;

Turn on the pulse control unit 130 to receive and modulate the pulsed light wave of the target wavelength to output the pulsed light wave of the target duration.

Turn off the pulse control unit 130 and the target pulse light source.

Specifically, refer to FIG. 3 , which is a flow chart of a multi-light source self-heating modulation method according to an embodiment of the present invention. It should be noted that the multi-light source self-heating modulation module 100 of the embodiment of the present application is used to realize the above-mentioned multi-light source self-heating modulation method, and the multi-light source self-heating modulation method of the embodiment of the present application is similar to the aforementioned multi-light source self-heating modulation module 100 Correspondingly, for the specific processing process, please refer to the aforementioned multi-light source self-heating modulation module 100 , which will not be repeated here.

It can be understood that, by executing the multi-light source self-heating modulation method of the embodiment of the present invention on the multi-light source self-heating modulation module 100 of the embodiment of the present invention, one of the multiple pulsed light sources 110 is selected by using the light source selection unit 120, that is, The target pulse light source is turned on, based on the relationship between the temperature rise of the light source and the wavelength, the main control unit 140 accurately calculates the self-heating time required for the pulse light source to reach the target wavelength, and determines the target according to the self-heating time. The connection time between the pulse light source and the pulse control unit 130 is to ensure the generation of the pulse light wave of the target wavelength. After the self-heating time, the pulse control unit 130 will further modulate to finally obtain the pulse light wave of the target wavelength and length. Therefore, for the multi-light source self-heating modulation module 100 of the embodiment of the present invention, it relies on the working self-heating of the pulse light source 110 to change the wavelength of the emitted pulsed light waves, and realizes the temperature modulation of pulsed light waves with different wavelengths through accurate calculation by the control unit. Compared with using a temperature modulation device for temperature modulation, the cost of the device itself is greatly reduced.

In addition, an embodiment of the present invention also provides a computer-readable storage medium, the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are executed by one or more control processors, so that the above-mentioned one or Multiple control processors execute a multi-light source self-heating modulation method in the above method embodiment, for example, execute the function of the method in FIG. 3 described above.

Through the above description of the implementation manners, those skilled in the art can clearly understand that each implementation manner can be implemented by means of software plus a general hardware platform. Those skilled in the art can understand that all or part of the process in the method of the above-mentioned embodiments can be completed by instructing related hardware through a computer program, and the program can be stored in a computer-readable storage medium. , it may include the flow of the embodiment of the above method. Wherein, the storage medium may be a magnetic disk, an optical disk, a read-only memory (ReadOnly Memory, ROM) or a random access memory (Random Access Memory, RAM), etc.

In addition, as shown in FIG. 1 , a multi-light source self-heating modulation optical fiber code identification system provided by an embodiment of the present invention includes a multi-light source self-heating modulation module 100 and a circulator 210 as in any embodiment of the present invention. , an optical fiber code 220, and a photoelectric collection unit 230. The circulator 210 includes a first port, a second port, and a third port. The first port is connected to the output end of the pulse control unit 130 of the multi-light source self-heating modulation module 100; the optical fiber code 220 is connected to the second port; the photoelectric collection unit 230 The input end of the A/D conversion unit 240 is electrically connected to the output end of the spectrum acquisition unit, and the output end is connected to the multi-light source automatic The main control unit 140 of the thermal modulation module 100 is electrically connected.

Specifically, referring to FIG. 1 , by using the main control unit 140 to control the multi-light source self-heating modulation module 100 to output the pulsed light waves with target wavelengths and durations, the pulsed light waves are transmitted to the optical fiber code 220 to be identified through the circulator 210, and the optical fiber code 220 thus recognizes the pulsed light waves. Reflecting to generate reflected light waves, the reflected light waves will be transmitted back to the circulator 210, and then transmitted to the photoelectric acquisition unit 230 for photoelectric conversion to obtain analog electrical signals, and further transmitted to the analog-to-digital conversion unit 240 for analog-to-digital conversion, thereby The analog electrical signal is converted into a digital signal and transmitted to the main control unit 140 for processing to complete the identification of the optical fiber code 220 .

It can be understood that multiple optical fiber codes 220 can be set, or a network structure with multiple optical fiber codes 220 can be used, and multiple pulsed light sources 110 in the multi-light source self-heating modulation module 100 can be modulated at different temperatures to obtain multiple The target pulsed light waves are used to identify multiple optical fiber codes 220 one by one.

It can be understood that, under the operation of the main control unit 140, the multi-light source self-thermal modulation module 100 sends the required pulsed light waves of specific wavelengths to the optical fiber code 220, and the optical fiber code 220 reflects the pulsed light waves of specific wavelengths and transmits them back The photoelectric collection unit 230 and the analog-to-digital conversion unit 240 can quickly identify the optical fiber code 220 after being processed. At the same time, the multi-light source self-heating modulation optical fiber code recognition system of the embodiment of the present invention adopts the multi-light source self-heating modulation module 100 that relies on the pulse light source 110 to work and self-heat, thereby reducing the overall cost of the system.

In addition, as shown in FIG. 4 , an optical fiber code identification method for self-thermal modulation of multiple light sources provided by an embodiment of the present invention is applied to a code identification system for optical fiber self-thermal modulation of multiple light sources as in the embodiment of the present invention, including The following steps:

The multi-light source self-heating modulation module 100 outputs pulsed light waves corresponding to the wavelength and duration of the fiber code 220 to the circulator 210, and then continue to transmit to the fiber code 220;

The photoelectric acquisition unit 230 receives the reflected light wave after the optical fiber code 220 reflects the pulsed light wave and performs photoelectric conversion processing to obtain an analog electrical signal;

The analog-to-digital conversion unit 240 receives the analog electrical signal and performs analog-to-digital conversion processing to obtain a digital signal;

The main control unit 140 receives the digital signal and processes it to complete the identification of the optical fiber code 220 .

Specifically, refer to FIG. 4 , which is a flowchart of a method for identifying an optical fiber code by self-thermal modulation of multiple light sources according to an embodiment of the present invention. It should be noted that the optical fiber code recognition system for multi-light source self-thermal modulation in the embodiment of the present application is used to realize the above-mentioned fiber code recognition method for multi-light source self-thermal modulation, and the fiber code recognition method for multi-light source self-thermal modulation in the embodiment of the present application Corresponding to the aforementioned optical fiber code identification system self-thermally modulated by multiple light sources, please refer to the above-mentioned optical fiber code identification system self-thermally modulated by multiple light sources for the specific processing process, and will not be repeated here.

It can be understood that, if the method for identifying fiber codes by self-thermal modulation of multiple light sources in the embodiment of the present invention is applied to a system for identifying codes of optical fibers by self-thermal modulation of multiple light sources, under the operation of the main control unit 140, the self-thermal modulation of multiple light sources The module 100 sends out the required pulsed light wave of a specific wavelength to the optical fiber code 220. The optical fiber code 220 reflects the pulsed light wave of a specific wavelength and sends it back to the photoelectric acquisition unit 230 and the analog-to-digital conversion unit 240. After processing, the optical fiber code 220 can be realized. quick identification.

In the description of this specification, reference to the terms "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific examples," or "some examples" is intended to mean that the implementation A specific feature, structure, material, or characteristic described by an embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the invention is defined by the claims and their equivalents.

Those skilled in the art can understand that all or some of the steps and systems in the methods disclosed above can be implemented as software, firmware, hardware and an appropriate combination thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit . Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). As known to those of ordinary skill in the art, the term computer storage media includes both volatile and nonvolatile media implemented in any method or technology for storage of information, such as computer readable instructions, data structures, program modules, or other data. permanent, removable and non-removable media. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cartridges, tape, magnetic disk storage or other magnetic storage devices, or can Any other medium used to store desired information and which can be accessed by a computer. In addition, as is well known to those of ordinary skill in the art, communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media .

The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned embodiments. Within the scope of knowledge of those of ordinary skill in the art, various modifications can be made without departing from the spirit of the present invention. Variety.

Claims (9)

1. A multi-light source self-heating modulation module, characterized in that, comprising: A plurality of pulsed light sources, each of which is self-heating to change the wavelength as the working time increases; A light source selection unit, the multiple input terminals of which are respectively connected to the output terminals of multiple pulsed light sources, and the light source selection unit is used to select one of the multiple pulsed light sources for light wave output; A pulse control unit, the input end of which is connected to the output end of the light source selection unit, and the output end is used to output pulse light waves corresponding to the wavelength and length of the optical fiber code to be identified; The main control unit is electrically connected to the multiple pulse light sources, the light source selection unit, and the pulse control unit respectively. 2. The multi-light source self-heating modulation module according to claim 1, wherein the light source selection unit adopts an SOA optical switch, and a plurality of input terminals of the SOA optical switch are respectively connected to output terminals of a plurality of pulsed light sources. The output end of the SOA optical switch is connected to the input end of the pulse control unit. 3. The multi-light source self-heating modulation module according to claim 1, wherein the light source selection unit adopts a wavelength division multiplexer, and a plurality of input terminals of the wavelength division multiplexer are respectively connected to a plurality of the The output end of the pulse light source is connected, the output end of the wavelength division multiplexer is connected with the input end of the pulse control unit, and the wavelength division multiplexer is electrically connected with the main control unit. 4. The multi-light source self-heating modulation module according to claim 1, wherein the pulse control unit adopts an electro-optic modulator, the input end of the electro-optic modulator is connected to the output end of the light source selection unit, and the The output end of the electro-optic modulator is used to output the pulsed light wave with the wavelength and duration corresponding to the code of the optical fiber to be identified, and the electro-optic modulator is electrically connected with the main control unit. 5. The multi-light source self-heating modulation module according to claim 1, wherein the pulse control unit adopts a SOA modulator, the input end of the SOA modulator is connected to the output end of the light source selection unit, and the The output end of the SOA modulator is used to output pulsed light waves with a wavelength and duration corresponding to the code of the optical fiber to be identified, and the SOA modulator is electrically connected to the main control unit. 6. A multi-light source self-heating modulation method, applied to the multi-light source self-heating modulation module according to any one of claims 1 to 5, characterized in that it comprises the following steps: determining a target pulse light source from multiple pulse light sources, and using the light source selection unit to connect the pulse control module to the target pulse light source; Turn on the target pulse light source, and determine the self-heating duration of the light source according to the relationship between the temperature rise of the target pulse light source and the wavelength; Perform temperature modulation on the target pulsed light source under the self-heating time of the light source to obtain the target wavelength pulsed light wave and output it to the pulse control unit by the light source selection unit, and the target wavelength pulsed light wave represents the The optical fiber encodes pulsed light waves of corresponding wavelengths; Turn on the pulse control unit to receive and modulate the target wavelength pulsed light wave to output the target duration pulsed light wave, the target duration pulsed light wave represents the pulsed light wave corresponding to the wavelength and length of the optical fiber code to be identified; Turn off the pulse control unit and the target pulse light source. 7. A computer-readable storage medium, characterized in that the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to make a computer perform the multi-light source self-heating method according to claim 6 modulation method. 8. A multi-light source self-thermal modulation optical fiber code recognition system, characterized in that it includes: The multi-light source self-heating modulation module as claimed in any one of claims 1 to 5; A circulator includes a first port, a second port, and a third port, the first port is connected to the output end of the pulse control unit of the multi-light source self-heating modulation module; Optical fiber coding, connected to the second port; A photoelectric collection unit, the input end of which is connected to the third port, and the photoelectric collection unit is used to process the pulse light wave and output an electrical signal; An analog-to-digital conversion unit whose input end is electrically connected to the output end of the spectrum acquisition unit, and whose output end is electrically connected to the main control unit of the multi-light source self-heating modulation module. 9. An optical fiber code identification method for self-thermal modulation of multiple light sources, applied to the optical fiber code identification system for self-thermal modulation of multiple light sources as claimed in claim 8, characterized in that it comprises the following steps: The multi-light source self-thermal modulation module outputs pulsed light waves corresponding to the wavelength and length of the optical fiber code to the circulator, and continue to transmit to the optical fiber code; The photoelectric acquisition unit receives the reflected light wave after the optical fiber code reflects the pulsed light wave and performs photoelectric conversion processing to obtain an analog electrical signal; The analog-to-digital conversion unit receives the analog electrical signal and performs analog-to-digital conversion processing to obtain a digital signal; The main control unit receives and processes the digital signal to complete the identification of the optical fiber code.

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