CN108227096A - The compact optical module and optical transmission method of transceiver are realized under co-wavelength - Google Patents
The compact optical module and optical transmission method of transceiver are realized under co-wavelength Download PDFInfo
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- CN108227096A CN108227096A CN201810269401.5A CN201810269401A CN108227096A CN 108227096 A CN108227096 A CN 108227096A CN 201810269401 A CN201810269401 A CN 201810269401A CN 108227096 A CN108227096 A CN 108227096A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4287—Optical modules with tapping or launching means through the surface of the waveguide
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4207—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms with optical elements reducing the sensitivity to optical feedback
- G02B6/4208—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms with optical elements reducing the sensitivity to optical feedback using non-reciprocal elements or birefringent plates, i.e. quasi-isolators
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4213—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical elements being polarisation selective optical elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4274—Electrical aspects
- G02B6/428—Electrical aspects containing printed circuit boards [PCB]
- G02B6/4281—Electrical aspects containing printed circuit boards [PCB] the printed circuit boards being flexible
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The invention discloses it is a kind of under co-wavelength realize transceiver compact optical module, including：Optical device BOSA；Circuit board PCBA；The flexible PCB being electrically connected between BOSA and PCBA；Structural member；Wherein, the BOSA includes：To be transmitted to output light, and the polarization splitting prism PBS of corresponding light component is converted by light is received；To be converted to output light and the light component of reception, and then the reflection subassembly for forming optical device transmitting-receiving light path, adjustment component are matched with PBS.The present invention provides a kind of compact optical module that transceiver is realized under co-wavelength, and due to using co-wavelength technology, therefore receiving terminal can realize the reception of arbitrary wavelength, is used without matching, and can be applied to wavelength-division multiplex system；Simultaneously because minimizing polarization splitting prism (PBS) mode built in its use, therefore BOSA miniaturizations can be realized by light path design.
Description
Technical field
The present invention relates to a kind of optical modules used in optical transport.It is more particularly related to a kind of use
In the compact optical module and optical transmission method of the optical transport realization transceiver in co-wavelength.
Background technology
Optical transceiver module (SFP, Small Form Pluggable) provides data transmission and reception in optical transport field
The advantages of function, compared to traditional cable, optical transport is small with attenuation, bandwidth height, strong antijamming capability, and single fiber bi-directional optical mode
Block (Bi-Direction SFP) has few, identical with the common SFP transmission characteristic of optical fiber dosage, small, hot-swappable etc.
Feature is widely used in optical communication field.
With the demand to optic communication bandwidth, compact optical module (Compact SFP), traditional single fiber are gradually developed into
Bidirectional optical module realizes the uplink and downlink of 1 road signal on an optical fiber, but CSFP can realize that 2 roads are believed on two optical fiber
Number uplink and downlink, compare tradition SFP optical modules, in the case where not changing encapsulation volume and optical fiber dosage, realize band
Wide doubles.
Traditional simplex optical module transmits different wave length by the way of Build-in WDM multiplexing, so as to fulfill an optical fiber
Carrier signal keeps transmission bandwidth constant while reducing optical fiber dosage.But due to using wave division multiplex mode, for transmitting terminal
Wavelength and reception wavelength all require, it is necessary to which pairing uses, such as 35 and 53, represents transmitting 1310nm/ receptions respectively
1550nm and transmitting 1550nm/ receive 1310nm, if unpaired use, can not receive respective wavelength signal.
Simultaneously at wavelength-division multiplex system (xWDM), due to launch wavelength and receive wavelength and all pass through external wavelength-division multiplex mould
Block carries out multiplex and partial wave, has strict requirements for wavelength input/output, so traditional simplex optical module, due to
It is multiplexed using Build-in WDM, has selectivity to wavelength, so can not be applied in wavelength-division multiplex system.
Invention content
It is excellent it is an object of the invention to solve at least the above and/or defect, and provide at least to will be described later
Point.
It is a still further object of the present invention to provide it is a kind of under co-wavelength realize transceiver compact optical module, by
It in adding PBS in optical device, therefore can match with reflection subassembly with adjustment component, be adopted in the optical transmission process of optical module
With co-wavelength technology, therefore receiving terminal can realize the reception of arbitrary wavelength, be used without matching, and can be applied to wavelength-division and answer
Use system；Simultaneously because minimizing polarization splitting prism (PBS) mode built in its use, therefore it can realize that BOSA is small by light path design
Type.
It is also an object of the present invention to provide a kind of optical transmission method, the difference that polarization state is passed through using PBS components
To separate traveling optical signal up and down so that receiving terminal can wavelength reception identical with transmitting terminal and non-interference, therefore co-wavelength
CSFP can realize the reception of arbitrary wavelength.
In order to realize these purposes and other advantages according to the present invention, provide one kind and transmitting-receiving one is realized under co-wavelength
The compact optical module of body, including：
Light transmit-receive integrated optical device BOSA is realized under co-wavelength；
Circuit board PCBA；
The flexible PCB being electrically connected between BOSA and PCBA；
For encapsulating the structural member of BOSA and PCBA；
Wherein, the BOSA includes：To be transmitted to output light, and the inclined of corresponding light component is converted by light is received
Shake Amici prism PBS；
To be converted to output light and the light component of reception, and then matched with PBS and form optical device transmitting-receiving light path
Reflection subassembly, adjustment component.
Preferably, wherein, the adjustment component includes：
For directional light to be converted into the polarizer of linearly polarized light；
For the analyzer being detected to transformed linearly polarized light；
For the linearly polarized light after analyzing to be rotated, to obtain matching faraday's light of the first P polarization light with PBS
Circulator.
Preferably, wherein, the light component includes S light and P light, and the reflection subassembly includes：
For carrying out the quarter wave plate of polarization conversion to S light；
For the first glass blocks being adjusted to S optical transport light paths, it is provided with anti-again to the light progress received
The first high-reflecting film of quarter wave plate is incident upon, to carry out secondary polarization adjustment by quarter wave plate and then obtain can be by the 2nd P of PBS
Polarised light.
Preferably, wherein, P light carries out rotation conversion by adjusting the Faraday optical rotator in component；
It is arranged between Faraday optical rotator and analyzer, with the second glass blocks being adjusted to P optical transport light paths,
It is provided with the light that will be received and reflexes to Faraday optical rotator again, carry out the adjustment of secondary rotating polarization to obtain S-polarization
Second high-reflecting film of light.
The purpose of the present invention can also be achieved by a kind of optical transmission method, and light transmitting-receiving one is realized under co-wavelength
In the optical module of body, which is characterized in that the method includes：By adjusting the cooperation of component, reflection subassembly and PBS, in optical mode
In the transmitting-receiving light path of block, by the polarization state difference situation to entering light in PBS, with differentiating uplink and downlink optical signal, and then in light
The transmission and reception to arbitrary wavelength channels are realized in transmission process.
Preferably, it wherein, in the transmission light path of optical module, by adjusting the directional light that component generates LD, converts
Into for polarization splitting prism PBS by P light outputs to optical fiber.
Preferably, wherein, in the receiving light path of optical module, optical fiber receives in optical module incident parallel light leads to
It crosses polarization splitting prism PBS and is converted into P light and S light；
By the cooperation of reflection subassembly and adjustment component, two times transfer is carried out respectively to P light and S light, S light is converted into
Corresponding P polarization light after P light is converted into corresponding S-polarization light, exports to PBS to close beam to PD.
Preferably, wherein, in light path is sent, the adjustment component includes：
For directional light to be converted into the polarizer of linearly polarized light；
For the analyzer being detected to transformed linearly polarized light；
For the linearly polarized light after analyzing to be rotated, to obtain matching the Faraday optical rotator of P light with PBS.
Preferably, wherein, in receiving light path, the reflection subassembly includes：
For carrying out the quarter wave plate of polarization conversion to S light；
For the first glass blocks being adjusted to S optical transport light paths, it is provided with the light that will be received and reflexes to again
Quarter wave plate carries out secondary polarization adjustment to obtain the first high-reflecting film of P polarization light；
P light carries out rotation conversion by adjusting the Faraday optical rotator in component；
It is arranged between Faraday optical rotator and analyzer, with the second glass blocks being adjusted to P optical transport light paths,
It is provided with the light that will be received and reflexes to Faraday optical rotator again, carry out the adjustment of secondary rotating polarization to obtain S-polarization
Second high-reflecting film of light.
Preferably, wherein, the optical module can be configured to apply to be passed in the light that phase co-wavelength mutually passes, different wave length mutually passes
The LD emitting modules of different wave length are used in defeated system or in an optical module, realize the mutual biography of different wave length.
The present invention includes at least following advantageous effect：
First, the present invention receives and dispatches co-wavelength optical module using single fiber bi-directional, due to using co-wavelength technology, for receiving terminal
It can realize the reception of arbitrary wavelength, so there is no need to match to use, and can be applied to wavelength-division multiplex system.
Second, the light that optical device LD of the present invention is sent out is adjusted after component carries out polarization adjusting, the light of LD is rotated into P
Polarised light, P polarization light is directly coupled to the Receptacle of optical assembly by polarization splitting prism, almost without any damage
Consumption；And the incident light that optical device receives experienced S-polarization light be converted to P polarization light and P polarization light is converted to S-polarization light 2
Polarization process, it is ensured that the light energy finally closed to PD is not almost also lost, therefore the optical transport of its equipment has preferably surely
It is qualitative.
Third, the incident optical signal that optical device of the present invention receives is divided into 2 part components by polarization splitting prism, transmitting
Its light path is different in the process, can not can simultaneously reach photodetector (PD), in order to ensure signal component reaches detector simultaneously,
It increases 2 glass blocks in the design of device to compensate come the light path to two-beam, it is ensured that its light path is consistent, so as to avoid
The generation of detector output signal shake.
Fourth, the optical transmission method of the present invention, is believed using PBS components by the difference of polarization state to separate uplink and downlink light
Number so that receiving terminal can wavelength reception identical with transmitting terminal and non-interference, therefore co-wavelength CSFP can realize arbitrary wave
Long reception.
Part is illustrated to embody by further advantage, target and the feature of the present invention by following, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Description of the drawings
Fig. 1 is the configuration schematic diagram of optical module in one embodiment of the present of invention；
Fig. 2 is the principle schematic diagram of optical transport in optical device in an alternative embodiment of the invention；
Fig. 3 is that optical module applies the topological schematic diagram in optical transport in one embodiment of the present of invention；
Fig. 4 is that optical module applies the topological schematic diagram in wavelength-division multiplex system in one embodiment of the present of invention.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings, to enable those skilled in the art with reference to specification text
Word can be implemented according to this.
It should be appreciated that such as " having ", "comprising" and " comprising " term used herein do not allot one or more
The presence or addition of a other element or combinations.
Fig. 1-2 shows a kind of realization of compact optical module that transceiver is realized under co-wavelength according to the present invention
Form, including：
Light transmit-receive integrated optical device BOSA1 is realized under co-wavelength, is used to realize co-wavelength in optical transmission process
Light transmitting-receiving；
Circuit board PCBA3；
The flexible PCB 2 being electrically connected between BOSA and PCBA；
For encapsulating the structural member 4 of BOSA and PCBA；
Wherein, the BOSA includes：To be transmitted to output light, and the inclined of corresponding light component is converted by light is received
Shake Amici prism PBS 5, PBS is configured as forming using a pair of of right-angle prism gluing, and it is vertical incident light can be divided into two beams
Line polarisation, and polarization spectro deielectric-coating is provided on the bevel edge of one of right-angle prism, so that P light can directly pass through, S polarisations
It is reflected with 45 degree of angles, and exit direction and S light are into an angle of 90 degrees；
To be converted to output light and the light component of reception, and then matched with PBS and form optical device transmitting-receiving light path
Reflection subassembly 6, adjustment component 7.It is mainly formed by the following parts using the co-wavelength CSFP optical modules in this scheme：Same wave
Long Mini BOSA, it is total to for being electrically connected the flexible PCB of PCBA and optical device, PCBA circuit boards, structural member and its accessory
With composition CSFP co-wavelength simplex optical modules, specifically, optical module of the invention uses built-in miniaturization polarization spectro
Prism (PBS) mode realizes BOSA miniaturizations by light path design, and specific light path implementation method is as follows：Transmitting terminal optical assembly
By adjusting the distance of LD and Lens, output light is less parallel light output, is converted into directional light completely by adjusting component
Meet the incident light of P light requirement in polarization splitting prism, wholly transmissive can go out and not interfere with receiving end signal, pass through
Receptacle 8 is coupled into optical fiber；
And incident light by after Receptacle become less parallel light, by being divided into P light and S light, S therein after PBS
Light is converted into P light by reflection subassembly, therefore directly can enter receiving terminal PD by PBS, and initial P light is passing through PBS
After component through adjust component become S light, be reflected into receiving terminal PD, so when incident light P light and S light all converge to PD ends,
So as to fulfill the whole convergences for receiving light, therefore under using co-wavelength technology, connecing for arbitrary wavelength can be realized for receiving terminal
Receive, so there is no need to match to use, and can be applied to wavelength-division multiplex system, have can implementation result it is good, operability is strong, adapts to
The good benefit of property.Also, this mode is a kind of explanation of preferred embodiments, and however, it is not limited to this.Implementing this hair
When bright, appropriate replacement and/or modification can be carried out according to user's demand.
As shown in Fig. 2, in another example, in light path is sent, the adjustment component includes：
For directional light to be converted into the polarizer 70 of linearly polarized light；
For the analyzer 71 being detected to transformed linearly polarized light；
For the linearly polarized light after analyzing to be rotated, to obtain matching faraday's light of the second P polarization light with PBS
Circulator 72.Using this scheme transmitting terminal optical assembly by adjusting the distance of LD and Lens, output light is that less parallel light is defeated
Go out, entering for polarization splitting prism P light requirements is complied fully with by becoming again by Faraday rotator after the polarizer and analyzer
Light is penetrated, wholly transmissive can go out and not interfere with receiving end signal, and then optical fiber is coupled by Receptacle, so that
It almost without light loss, has the benefit of better adaptability, operability and stability.Also, this mode is
A kind of explanation of preferred embodiments, however, it is not limited to this.When implementing the present invention, can be carried out suitably according to user's demand
It replaces and/or changes.
As shown in Fig. 2, in another example, in receiving light path, the reflection subassembly includes：
For carrying out the quarter wave plate 61 of polarization conversion to S light；
For the first glass blocks 62 being adjusted to S optical transport light paths, it is provided with the light that will be received secondary reflection again
To quarter wave plate, secondary polarization adjustment is carried out to obtain the first high-reflecting film (not shown) of the first P polarization light.Using this scheme
And incident light is by the way that, as less parallel light, by being divided into P light and S light after PBS, and S light passes through quarter wave plate after Receptacle
Rear polarizer direction rotates 45 degree with quarter wave plate optical axis direction, passes through quarter wave plate by being again returned to after plating high-reflecting film on sheet glass
Afterwards, become P light after rotating 45 degree again, therefore can receiving terminal PD directly be entered by PBS, so that the luminous energy of component further returns
LD is back to, the benefit with better adaptability and stability.Also, this mode is a kind of saying for preferred embodiments
Bright, however, it is not limited to this.When implementing the present invention, appropriate replacement and/or modification can be carried out according to user's demand.
As shown in Fig. 2, in another example, in receiving light path, P light rotates by adjusting faraday's light in component
Device carries out rotation conversion；
It is arranged between Faraday optical rotator and analyzer, with the second glass blocks being adjusted to P optical transport light paths
73, it is provided with the light that will be received and reflexes to Faraday optical rotator again, it is inclined to obtain S to carry out secondary rotating polarization adjustment
Shake the second high-reflecting film (not shown) of light.Faraday rotation is being crossed by the way that PBS components are laggard using P light initial in this scheme
Enter analyzer after device, since polarization direction is vertical with analyzer analyzing direction, therefore after being totally reflected into Faraday rotation into
For S light, be reflected into receiving terminal PD, so when incident light P light and S light all converge to PD ends, so as to fulfill receive light it is complete
Portion converge, have can implementation result it is good, operability is strong, the good benefit of stability.Also, this mode be it is a kind of compared with
The explanation of good example, however, it is not limited to this.When implementing the present invention, appropriate replacement can be carried out according to user's demand
And/or modification.
As shown in figure 4, the purpose of the present invention can also be achieved by a kind of optical transmission method, it is real under co-wavelength
In existing light transmit-receive integrated optical module, which is characterized in that the method includes：By adjusting matching for component, reflection subassembly and PBS
It closes, in the transmitting-receiving light path of optical module, by the polarization state difference situation to entering light in PBS, with differentiating uplink and downlink optical signal,
And then transmission and reception of the realization to arbitrary wavelength channels in optical transmission process.Wavelength can not be selected due to receiving,
Therefore can use in wdm system, specific implementation is as follows：As figure can use 1270nm and 1290nm different in module 1
The thick wavelength division component of wavelength, and so at most realize 18 waves CWDM, compared to traditional wavelength-division system, a fitting can be saved
The optical fiber of wave separater passive device and a root long Distance Transmission.There is adaptable, the cost of optical transport using this scheme
Controllably, the better benefit of transmission stability.Also, this mode is a kind of explanation of preferred embodiments, but is not limited to
In this.When implementing the present invention, appropriate replacement and/or modification can be carried out according to user's demand.
In another example, in the transmission light path of optical module, by adjusting the directional light that component generates LD, conversion
Into for polarization splitting prism PBS by P light outputs to optical fiber.It is adjusted using the polarised lights sent out of LD in this scheme
After component, the light of LD is rotated into P polarization light, P polarization light is directly coupled to optical assembly by polarization splitting prism
Receptacle, thus its almost without what damage, have can implementation result it is good, the strong benefit of operability.Also, this
Kind mode is a kind of explanation of preferred embodiments, and however, it is not limited to this.It, can be according to user's demand when implementing the present invention
Carry out appropriate replacement and/or modification.
In another example, in the receiving light path of optical module, optical fiber receives in optical module incident parallel light leads to
It crosses polarization splitting prism PBS and is converted into P light and S light；
By the cooperation of reflection subassembly and adjustment component, two times transfer is carried out respectively to P light and S light, S light is converted into
Corresponding P polarization light after P light is converted into corresponding S-polarization light, exports to PBS to close beam to PD.It is received using this scheme
Incident light be divided into the vertical line polarisation of two beams (S light and P light) in polarization splitting prism, S-polarization is realized by reflection subassembly
Light is converted into P polarization light, so the P polarization luminous energy for reflecting quarter wave plate for the second time is incident on light by polarization splitting prism
The receiving end PD of component.And another beam P polarization light is directly by entering adjustment component, former incident P polarization after polarization splitting prism
Light becomes the S-polarization light being rotated by 90 °, and after this S-polarization light enters polarization splitting prism, light is refracted to by polarization splitting prism
The receiving end PD of component.Therefore the incident light received experienced that S-polarization light is converted to P polarization light and P polarization light is converted to S-polarization light
2 polarization process, it is ensured that finally close the light energy to PD almost without loss, therefore receiving terminal can receive phase with transmitting terminal
It is non-interference in the case of co-wavelength, it is achieved in that and uplink and downlink light is separated by the difference of polarization state using PBS components
Signal, therefore co-wavelength CSFP can realize the reception of arbitrary wavelength, have can implementation result it is good, operability is strong, stability
Good benefit.Also, this mode is a kind of explanation of preferred embodiments, and however, it is not limited to this.Implementing the present invention
When, appropriate replacement and/or modification can be carried out according to user's demand.
In another example, in light path is sent, the adjustment component includes：
For directional light to be converted into the polarizer of linearly polarized light；
For the analyzer being detected to transformed linearly polarized light；
For the linearly polarized light after analyzing to be rotated, to obtain matching the Faraday optical rotator of P light with PBS.
The polarised light sent out using this scheme LD is rotated into P after the polarizer, analyzer and Faraday optical rotator, by the light of LD
Polarised light, P polarization light are directly coupled to the Receptacle of optical assembly by polarization splitting prism, are exported almost without what
Light loss, adaptable good, the strong benefit of stability.Also, this mode is a kind of explanation of preferred embodiments, but simultaneously
It is not limited to this.When implementing the present invention, appropriate replacement and/or modification can be carried out according to user's demand.
In another example, in receiving light path, the reflection subassembly includes：
For carrying out the quarter wave plate of polarization conversion to S light；
For the first glass blocks being adjusted to S optical transport light paths, it is provided with the light that will be received and reflexes to again
Quarter wave plate carries out secondary polarization adjustment to obtain the first high-reflecting film of P polarization light；
P light carries out rotation conversion by adjusting the Faraday optical rotator in component；
It is arranged between Faraday optical rotator and analyzer, with the second glass blocks being adjusted to P optical transport light paths,
It is provided with the light that will be received and reflexes to Faraday optical rotator again, carry out the adjustment of secondary rotating polarization to obtain S-polarization
Second high-reflecting film of light.Quarter wave plate and the first glass below are refracted by polarization splitting prism using the S light in this scheme
Block, the first high-reflecting film of glass blocks will reflect quarter wave plate again by the light of quarter wave plate, and in quarter wave plate, S light has carried out 2
Secondary 45 degree of polarization rotation, is converted into P polarization light, so reflecting the P polarization of quarter wave plate for the second time so as to fulfill S-polarization light
Luminous energy is incident on the receiving end PD of optical assembly by polarization splitting prism, realizes and is collected to entering the whole of S light components in light beam；
Faraday optical rotator is emitted to analyzer after being rotated to P polarization light, and analyzer is anti-by this postrotational P polarization light
It injects into Faraday optical rotator, after the reflection of the second high-reflecting film, P polarization light is revolved again through Faraday optical rotator
Turn, after 2 rotations, former incident P polarization light becomes the S-polarization light being rotated by 90 °, this S-polarization light enters polarization splitting prism
Afterwards, the receiving end PD of optical assembly is refracted to by polarization splitting prism, realizes and is collected to entering the whole of P light components in light beam, had
Can implementation result it is good, operability is strong, the good benefit of stability.Also, this mode is a kind of saying for preferred embodiments
Bright, however, it is not limited to this.When implementing the present invention, appropriate replacement and/or modification can be carried out according to user's demand.
As shown in figure 3, in another example, the optical module can be configured to apply mutually pass in phase co-wavelength, different waves
The LD emitting modules of different wave length are used in the long optical transmission system mutually passed or in an optical module, realize the mutual of different wave length
It passes.Using this scheme can be there are three types of realization method：Mode A can realize that phase co-wavelength mutually passes；Mode B can be realized
Different wave length mutually passes；Mode C can be realized in same module, using emitting at different wavelengths LD components, realize that different wave length is mutual
Pass, it is adaptable strong, can implementation result it is good, the strong benefit of operability.Also, this mode is a kind of preferable reality
The explanation of example, however, it is not limited to this.When implementing the present invention, can be carried out according to user's demand appropriate replacement and/or
Modification.
Number of devices and treatment scale described herein are the explanations for simplifying the present invention.To the present invention in same wave
The application of the long lower compact optical module for realizing transceiver, modifications and variations are aobvious and easy to one skilled in the art
See.
Although the embodiments of the present invention have been disclosed as above, but its be not restricted in specification and embodiment it is listed
With.It can be applied to various suitable the field of the invention completely.It for those skilled in the art, can be easily
Realize other modification.Therefore without departing from the general concept defined in the claims and the equivalent scope, it is of the invention and unlimited
In specific details and legend shown and described herein.
Claims (10)
1. a kind of compact optical module that transceiver is realized under co-wavelength, which is characterized in that including：
Light transmit-receive integrated optical device BOSA is realized under co-wavelength；
Circuit board PCBA；
The flexible PCB being electrically connected between BOSA and PCBA；
For encapsulating the structural member of BOSA and PCBA；
Wherein, the BOSA includes：To be transmitted to output light, and the polarization point for light will be received being converted into corresponding light component
Light prism PBS；
To be converted to output light and the light component of reception, and then matched with PBS and form the anti-of optical device transmitting-receiving light path
Penetrate component, adjustment component.
2. the compact optical module of transceiver is realized under co-wavelength as described in claim 1, which is characterized in that the tune
Whole group part includes：
For directional light to be converted into the polarizer of linearly polarized light；
For the analyzer being detected to transformed linearly polarized light；
For the linearly polarized light after analyzing to be rotated, rotated with the faraday's light for obtaining matching the first P polarization light with PBS
Device.
3. the compact optical module of transceiver is realized under co-wavelength as described in claim 1, which is characterized in that the light
Component includes S light and P light, and the reflection subassembly includes：
For carrying out the quarter wave plate of polarization conversion to S light；
For the first glass blocks being adjusted to S optical transport light paths, it is provided with and the light received is reflexed to again
First high-reflecting film of quarter wave plate, to carry out secondary polarization adjustment by quarter wave plate and then obtain can be by the second P polarization of PBS
Light.
4. the compact optical module of transceiver is realized under co-wavelength as described in claim 1, which is characterized in that P light leads to
Faraday optical rotator in toning whole group part carries out rotation conversion；
It is arranged between Faraday optical rotator and analyzer, with the second glass blocks being adjusted to P optical transport light paths, thereon
It is provided with the light that will be received and reflexes to Faraday optical rotator again, carry out the adjustment of secondary rotating polarization to obtain S-polarization light
Second high-reflecting film.
5. a kind of optical transmission method is realized in light transmit-receive integrated optical module, which is characterized in that the method under co-wavelength
Including：By adjusting the cooperation of component, reflection subassembly and PBS, in the transmitting-receiving light path of optical module, by entering light in PBS
Polarization state difference situation, with differentiating uplink and downlink optical signal, so in optical transmission process realize to arbitrary wavelength channels
Transmission and reception.
6. optical transmission method as claimed in claim 5, which is characterized in that in the transmission light path of optical module, by adjusting group
The directional light that part generates LD, be converted into for polarization splitting prism PBS by P light outputs to optical fiber.
7. optical transmission method as claimed in claim 5, which is characterized in that in the receiving light path of optical module, light in optical module
The incident parallel light that fibre receives is converted into P light and S light by polarization splitting prism PBS；
By the cooperation of reflection subassembly and adjustment component, two times transfer is carried out respectively to P light and S light, S light is converted into corresponding to
P polarization light, after P light is converted into corresponding S-polarization light, export to PBS to close beam to PD.
8. optical transmission method as claimed in claim 5, which is characterized in that in light path is sent, the adjustment component includes：
For directional light to be converted into the polarizer of linearly polarized light；
For the analyzer being detected to transformed linearly polarized light；
For the linearly polarized light after analyzing to be rotated, to obtain matching the Faraday optical rotator of P light with PBS.
9. optical transmission method as claimed in claim 5, which is characterized in that in receiving light path, the reflection subassembly includes：
For carrying out the quarter wave plate of polarization conversion to S light；
For the first glass blocks being adjusted to S optical transport light paths, it is provided with the light that will be received and reflexes to 1/4 wave again
Piece carries out secondary polarization adjustment to obtain the first high-reflecting film of P polarization light；
P light carries out rotation conversion by adjusting the Faraday optical rotator in component；
It is arranged between Faraday optical rotator and analyzer, with the second glass blocks being adjusted to P optical transport light paths, thereon
It is provided with the light that will be received and reflexes to Faraday optical rotator again, carry out the adjustment of secondary rotating polarization to obtain S-polarization light
Second high-reflecting film.
10. optical transmission method as claimed in claim 5, which is characterized in that the optical module can be configured to apply in identical wave
The long LD emitting modules for mutually passing, different wave length being used in the optical transmission system that different wave length mutually passes or in an optical module, it is real
The mutual biography of existing different wave length.
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| JPS63115145A (en) * | 1986-11-04 | 1988-05-19 | Oki Electric Ind Co Ltd | Optical coupler |
| US20080252961A1 (en) * | 2007-04-13 | 2008-10-16 | Fujitsu Limited | Optical transceiver |
| CN104656286A (en) * | 2014-10-27 | 2015-05-27 | 徐州旭海光电科技有限公司 | Miniature identical-wavelength single-core two-way optical transceiver module |
| CN206649185U (en) * | 2016-12-19 | 2017-11-17 | 陈佩娟 | One kind miniaturization optical circulator |
| CN207924209U (en) * | 2018-03-29 | 2018-09-28 | 四川华拓光通信股份有限公司 | The compact optical module of transceiver is realized under co-wavelength |
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2018
- 2018-03-29 CN CN201810269401.5A patent/CN108227096A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63115145A (en) * | 1986-11-04 | 1988-05-19 | Oki Electric Ind Co Ltd | Optical coupler |
| US20080252961A1 (en) * | 2007-04-13 | 2008-10-16 | Fujitsu Limited | Optical transceiver |
| CN104656286A (en) * | 2014-10-27 | 2015-05-27 | 徐州旭海光电科技有限公司 | Miniature identical-wavelength single-core two-way optical transceiver module |
| CN206649185U (en) * | 2016-12-19 | 2017-11-17 | 陈佩娟 | One kind miniaturization optical circulator |
| CN207924209U (en) * | 2018-03-29 | 2018-09-28 | 四川华拓光通信股份有限公司 | The compact optical module of transceiver is realized under co-wavelength |
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Application publication date: 20180629 |