CN109655231A - 2 × 2 polarization-maintaining optical fiber beam splitter working shaft detection methods of one kind and system - Google Patents
2 × 2 polarization-maintaining optical fiber beam splitter working shaft detection methods of one kind and system Download PDFInfo
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- CN109655231A CN109655231A CN201811385673.8A CN201811385673A CN109655231A CN 109655231 A CN109655231 A CN 109655231A CN 201811385673 A CN201811385673 A CN 201811385673A CN 109655231 A CN109655231 A CN 109655231A
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
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Abstract
The invention discloses a kind of 2 × 2 polarization-maintaining optical fiber beam splitter working shaft detection methods and systems, the system includes light source module, it is polarized module, analyzing mould is fast and detection module, the output tail optical fiber connection of light source module is polarized the input tail optical fiber of module, the output tail optical fiber for being polarized module connects wherein any one input tail optical fiber of 2 × 2 polarization-maintaining optical fiber beam splitter to be measured, the input tail optical fiber of the output tail optical fiber connection analyzing module corresponding with described wherein any one input tail optical fiber of 2 × 2 polarization-maintaining optical fiber beam splitter to be measured, the input tail optical fiber of the output tail optical fiber connecting detection module of analyzing module, module output is polarized along the linearly polarized light of fast axis propagation, the polarization state of analyzing module is identical as the polarization state for being polarized module, power ratio according to test 2 × 2 polarization-maintaining optical fiber beam splitters first of gained output tail optical fiber and the first input tail optical fiber determines to be measured 2 × The working shaft of 2 polarization-maintaining optical fiber beam splitters.
Description
Technical field
The invention belongs to polarization-maintaining optical fiber beam splitter fields, and in particular to a kind of 2 × 2 polarization-maintaining optical fiber beam splitters work shaft detection
Method and system.
Background technique
Polarization-maintaining optical fiber beam splitter is a kind of optical passive component, a branch of incident light can be divided into polarization state by certain splitting ratio
Two beam emergent light identical with incident light., good directionality low with added losses, environmental stability are strong, control method is simple and
The features such as at low cost, can be widely applied to the fields such as Fibre Optical Sensor, fiber optic communication.
The full warm nature of 2 × 2 polarization-maintaining optical fiber beam splitters can and splitting ratio performance it is more excellent, can be applied to requirement to device it is higher and
Need mould field matching, all risk insurance polarized light road scheme high-precision optical fiber gyro light path system.Due to current high-precision optical fiber gyro
The working shaft of Primary Component is all fast axle in light path system, in order to make the high polarisation of light into fiber optic loop, it is necessary to which 2 × 2 protect
The working shaft of inclined fiber optic splitter is also fast axle.
However, in 2 × 2 polarization-maintaining optical fiber beam splitter production processes to reasons such as axis errors, be easy to cause beam splitter work
Make the case where axis is slow axis, and the current low polarisation for entering factory's review method and being issued using injection ASE or SLD, to survey
The power and degree of polarization of beam splitter emergent light are measured, this method can not judge the working shaft of 2 × 2 polarization-maintaining optical fiber beam splitters.
Summary of the invention
Aiming at the above defects or improvement requirements of the prior art, the present invention provides a kind of 2 × 2 polarization-maintaining optical fiber beam splitter works
Make shaft detection method and system, gives 2 × 2 polarization-maintaining optical fiber beam splitter to be measured by the linearly polarized light of input fast axis propagation, and will
Detection module of 2 × 2 polarization-maintaining optical fiber beam splitter to be measured Jing Guo different polarization states, according to test 2 × 2 polarization maintaining optical fibre beam splitting of gained
Wherein the power ratio of any one output tail optical fiber and corresponding input tail optical fiber determines 2 × 2 polarization maintaining optical fibre beam splitting to be measured to device
The working shaft of device.
To achieve the above object, according to one aspect of the present invention, a kind of 2 × 2 polarization-maintaining optical fiber beam splitters work is provided
Shaft detection method, specific steps are as follows:
S1. export linearly polarized light along fast axis propagation to 2 × 2 polarization-maintaining optical fiber beam splitter to be measured wherein any one input
Tail optical fiber, the power for measuring the linearly polarized light along fast axis propagation is P0；
S2. the output tail optical fiber corresponding with described wherein any one input tail optical fiber of 2 × 2 polarization-maintaining optical fiber beam splitter to be measured
It is P that output power is measured after the analyzing module along fast axis propagation1；
S3. according to P1/P0Value judges 2 × 2 polarization-maintaining optical fiber beam splitter working shaft to be measured.
As a further improvement of the present invention, step S3 specifically:
P1/P0In the first preset range, then 2 × 2 polarization-maintaining optical fiber beam splitter working shaft to be measured is fast axle；
P1/P0In the second preset range, by 2 × 2 polarization-maintaining optical fiber beam splitter to be measured with it is described wherein any one input
It is P that the corresponding output tail optical fiber of tail optical fiber measures output power after the analyzing module propagated along slow axis1', P1'/P0It is pre- first
If in range, then 2 × 2 polarization-maintaining optical fiber beam splitter working shaft to be measured is slow axis, P1'/P0In the second preset range, then to be measured 2 ×
The damage of 2 polarization-maintaining optical fiber beam splitters.
As a further improvement of the present invention, true according to the color and index path of 2 × 2 polarization-maintaining optical fiber beam splitter tail optical fiber to be measured
Fixed output tail optical fiber corresponding with described wherein any one input tail optical fiber.
To achieve the above object, other side according to the invention provides a kind of 2 × 2 polarization-maintaining optical fiber beam splitter works
Make repacking examining system, which includes light source module, is polarized that module, analyzing mould be fast and detection module, the output tail of light source module
Fibre connection is polarized the input tail optical fiber of module, and the output tail optical fiber for being polarized module connects wherein appointing for 2 × 2 polarization-maintaining optical fiber beam splitter to be measured
It anticipates one and inputs tail optical fiber, the output corresponding with described wherein any one input tail optical fiber of 2 × 2 polarization-maintaining optical fiber beam splitter to be measured
The input tail optical fiber of tail optical fiber connection analyzing module, the input tail optical fiber of the output tail optical fiber connecting detection module of analyzing module,
Module output is polarized along the linearly polarized light of fast axis propagation, measures the performance number P for being polarized module output tail optical fiber0；
The polarization state of analyzing module is identical as the polarization state for being polarized module, and detection module measures analyzing module output tail
Fine performance number P1；
According to P1/P0Value judges 2 × 2 polarization-maintaining optical fiber beam splitter working shaft to be measured.
As a further improvement of the present invention, P1/P0In the first preset range, then 2 × 2 polarization-maintaining optical fiber beam splitter to be measured
Working shaft is fast axle；
P1/P0In the second preset range, tail optical fiber and analyzing module are exported by the first of 2 × 2 polarization-maintaining optical fiber beam splitter to be measured
90 ° of input tail optical fiber to axis welding, detection module measure analyzing module output tail optical fiber performance number P1', P1'/P0It is default first
In range, then 2 × 2 polarization-maintaining optical fiber beam splitter working shaft to be measured is slow axis；P1'/P0In the second preset range, then to be measured 2 × 2
Polarization-maintaining optical fiber beam splitter damage.
As a further improvement of the present invention, light source module includes ASE light source, and ASE light source output linear polarization degree is less than
The single-mode optics of 0.2dB.
As a further improvement of the present invention, being polarized module includes a polarizer and input and output tail optical fiber, is polarized module
Input tail optical fiber and output tail optical fiber be polarization maintaining optical fibre, the polarizer is polarized direction and tail optical fiber fast axle into 0 ° of angle.
As a further improvement of the present invention, analyzing module includes an analyzer and input and output tail optical fiber, analyzing module
Input tail optical fiber and output tail optical fiber be polarization maintaining optical fibre, the polarizer is polarized direction and tail optical fiber fast axle into 0 ° of angle.
As a further improvement of the present invention, detection module includes light power meter, fiber clamp and naked fibre adapter, optical fiber
Fixture is one with can reverse positioning mechanism, detection module light power meter and passes through fiber clamp fixation pair with naked fibre adapter
It connects.
As a further improvement of the present invention, true according to the color and index path of 2 × 2 polarization-maintaining optical fiber beam splitter tail optical fiber to be measured
Fixed output tail optical fiber corresponding with described wherein any one input tail optical fiber.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, have below beneficial to effect
Fruit:
2 × 2 polarization-maintaining optical fiber beam splitter working shaft detection method of one kind of the invention and system pass through input fast axis propagation
Linearly polarized light give 2 × 2 polarization-maintaining optical fiber beam splitter to be measured, and will 2 × 2 polarization-maintaining optical fiber beam splitter to be measured by different polarization states
Detection module, according to 2 × 2 polarization-maintaining optical fiber beam splitters of test gained, wherein any one output and inputs tail optical fiber with it at tail optical fiber
Power ratio determines the working shaft of 2 × 2 polarization-maintaining optical fiber beam splitter to be measured.
2 × 2 polarization-maintaining optical fiber beam splitter working shaft detection method of one kind of the invention and system, are polarized module and analyzing mould
Block uses the identical polarizer or analyzer, and light channel structure is simple, can be completed using existing optical device, operation letter
It is single, as a result effectively.
2 × 2 polarization-maintaining optical fiber beam splitter working shaft detection method of one kind of the invention and system, without to 2 × 2 polarization-maintaining light
Fine beam splitter is uncapped reinspection, and because entering factory's sampling reinspection without destructor part structure, while compared to device, which can be to device
Part entirety is rechecked, to improve the reliability of device.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of 2 × 2 polarization-maintaining optical fiber beam splitter working shaft detection system of one kind of the embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
In addition, as long as technical characteristic involved in the various embodiments of the present invention described below is each other not
Constituting conflict can be combined with each other.The present invention is described in more detail With reference to embodiment.
Fig. 1 is the structural schematic diagram of 2 × 2 polarization-maintaining optical fiber beam splitter working shaft detection system of one kind of the embodiment of the present invention.
As shown in Figure 1, the system includes light source module, is polarized module, analyzing module and detection module, wherein
Light source module includes DC power supply and ASE light source, and DC power supply connects light source module, the output tail optical fiber of ASE light source
With the input tail optical fiber welding for being polarized module, light source module tail optical fiber inputs tail optical fiber with module is polarized with any angle welding；ASE light source
It with red, black line, is connect respectively with the positive and negative electrode of DC power supply, measures the fiber optical power P out for being polarized module0；DC power supply is used
In power supply ASE light source, ASE light source is polarized module for output light source,
For DC power supply to ASE light source offer+5V DC voltage and grounding point, ASE light source can be postpeak work, can also be with
It is leading peak work, both the operating central wavelength of ASE light source can be 1560nm, be also possible to 1530nm；ASE light source, emergent light
Be it is low partially, linear polarization degree in 0.2dB hereinafter, output tail optical fiber be single mode.
The output tail optical fiber for being polarized module connects wherein any one input tail optical fiber of 2 × 2 polarization-maintaining optical fiber beam splitter to be measured, rises
The output tail optical fiber of inclined module is corresponding with described wherein any one input tail optical fiber with 2 × 2 polarization-maintaining optical fiber beam splitter to be measured
0 ° of tail optical fiber of output is to axis welding；Be polarized module include a polarizer and input and output tail optical fiber, be polarized module input tail optical fiber and
Output tail optical fiber is polarization maintaining optical fibre, and the polarizer is polarized direction and tail optical fiber fast axle into 0 ° of angle.
Analyzing module includes an analyzer and input and output tail optical fiber, and it is polarization-maintaining that analyzing module, which outputs and inputs tail optical fiber,
Analyzer by analyzing direction be adjusted to the polarizer to be polarized direction identical, analyzer analyzing direction and tail optical fiber fast axle are at 0 ° of angle.To
Survey the input tail optical fiber of the first output tail optical fiber connection analyzing module of 2 × 2 polarization-maintaining optical fiber beam splitters, 2 × 2 polarization maintaining optical fibre beam splitting to be measured
The first of device exports 0 ° of input tail optical fiber of tail optical fiber and analyzing module to axis welding, the output tail optical fiber connecting detection module of analyzing module
Input tail optical fiber, detection module measure analyzing module go out fiber optical power P1；If performance number ratio P1/P0In the first preset range
It is interior, for example, the first preset range can be taken as 1/5~1/3, then illustrate that the polarization-maintaining optical fiber beam splitter working shaft is fast axle；
2 × 2 polarization-maintaining optical fiber beam splitter to be measured further includes an embedded polarizer close to light source side, and polarization-maintaining optical fiber beam splitter is
2 × 2 grinding formulas, there is two input tail optical fibers and two output tail optical fibers, and the first, second input tail optical fiber is exported with first, second respectively
Tail optical fiber corresponds.The polarizer position for the grinding formula polarization-maintaining optical fiber beam splitter that can be provided according to producer determines beam splitter by dipped beam
The side in source, can be determined according to the beam splitter index path that the color of beam splitter tail optical fiber and producer provide beam splitter input tail optical fiber and
The corresponding output tail optical fiber of the input tail optical fiber.
If performance number ratio P1/P0In the second preset range, then by the first output of 2 × 2 polarization-maintaining optical fiber beam splitter to be measured
To axis welding, detection module measures the performance number P of analyzing module output tail optical fiber for 90 ° of tail optical fiber and the input tail optical fiber of analyzing module1',
P1'/P0In the first preset range, for example, the first preset range can be taken as 1/5~1/3, then illustrate 2 × 2 polarization maintaining optical fibre to be measured
Beam splitter working shaft is slow axis；If performance number ratio P1'/P0In the second preset range, for example, the second preset range can be
Less than 1/10, then illustrate 2 × 2 polarization-maintaining optical fiber beam splitter damage to be measured.
A polarizing film built in 2 × 2 polarization-maintaining optical fiber beam splitter to be measured, saturating folk prescription is to consistent with fast axis direction；Built-in one
Semi-transparent semi-reflecting lens, to realize light splitting function；Two input tail optical fibers can with light source tail optical fiber welding, one by one with two output tail optical fibers
It is corresponding.If accurate to axis in beam splitter manufacturing process, then output light is transmitted in output tail optical fiber along fast axle, into analyzing module
It is still exported afterwards along fast axle.If making mistakes in beam splitter manufacturing process to axis, so that output light is transmitted in output tail optical fiber along slow axis,
Analyzing module analyzing direction and beam splitter output tail optical fiber working shaft are vertical at this time, therefore Output optical power is close to 0.
Detection module includes fiber clamp, naked fibre adapter and light power meter, about 2 lis of the output pigtail ends of analyzing module
The optical fiber of meter Chang Du is removed coat with wire stripper, is fixed on naked fibre adapter, and naked fibre adapter is inserted into light by port
Power meter interface, fiber clamp include one with that can reverse positioning mechanism, and detection module light power meter passes through interface and has
The naked fibre adapter docking of positioning mechanism can be reversed, the output tail optical fiber of analyzing module is fixed on naked fibre adaptation close to light-emitting window position
On device.
Each device of system is placed on epoxy plate, is affixed at device edge and is fixed in polyimides static-free glue band
On epoxy plate.
A kind of 2 × 2 polarization-maintaining optical fiber beam splitter working shaft detection methods, specific steps are as follows:
S1. export linearly polarized light along fast axis propagation to 2 × 2 polarization-maintaining optical fiber beam splitter to be measured wherein any one input
Tail optical fiber, the power for measuring the linearly polarized light along fast axis propagation is P0；
S2. 2 × 2 polarization-maintaining optical fiber beam splitter to be measured output tail optical fiber corresponding with wherein any one input tail optical fiber passes through along fast
It is P that output power is measured after the analyzing module that axis is propagated1；
S3.P1/P0In the first preset range, then 2 × 2 polarization-maintaining optical fiber beam splitter working shaft to be measured is fast axle；
S4.P1/P0In the second preset range, by 2 × 2 polarization-maintaining optical fiber beam splitter to be measured with wherein any one input
It is P that the corresponding output tail optical fiber of tail optical fiber measures output power after the analyzing module propagated along slow axis1', P1'/P0It is default first
In range, then 2 × 2 polarization-maintaining optical fiber beam splitter working shaft to be measured is slow axis, P1'/P0In the second preset range, then to be measured 2 × 2
Polarization-maintaining optical fiber beam splitter damage.
The beam splitter index path that can be provided according to the color of 2 × 2 polarization-maintaining optical fiber beam splitter tail optical fiber to be measured and producer determine with
Wherein any one corresponding output tail optical fiber of input tail optical fiber.
The welding order of 2 × 2 grinding each fusing points of formula polarization-maintaining optical fiber beam splitter working shaft detection system is as follows:
To be polarized module output tail optical fiber and it is to be measured 2 × 2 be ground formula polarization-maintaining optical fiber beam splitter wherein one 0 ° of tail optical fiber of input it is right
Axis welding；
The output tail optical fiber corresponding with input tail optical fiber of 2 × 2 grinding formula polarization-maintaining optical fiber beam splitters and analyzing module are inputted
Tail optical fiber is with 0 ° to axis welding；
The output tail optical fiber corresponding with input tail optical fiber of 2 × 2 grinding formula polarization-maintaining optical fiber beam splitters and analyzing module are inputted
Tail optical fiber is with 90 ° to axis welding.
If 2 × 2 grinding formula polarization-maintaining optical fiber beam splitters output tail optical fibers and analyzing module input tail optical fiber with 0 ° to axis welding when, inspection
Inclined module output tail optical fiber light power be light source light power 1/4,2 × 2 grinding formula polarization-maintaining optical fiber beam splitters export tail optical fibers with
Analyzing module input tail optical fiber with 90 ° to axis welding when, analyzing module output tail optical fiber light power be approximately equal to 0, then this 2 × 2 grinding
Formula polarization-maintaining optical fiber beam splitter is fast axle work.
If 2 × 2 grinding formula polarization-maintaining optical fiber beam splitters output tail optical fibers and analyzing module input tail optical fiber with 90 ° to axis welding when,
If analyzing module exports 1/4,2 × 2 grinding formula polarization-maintaining optical fiber beam splitters that tail optical fiber light power is light source light power and exports tail
It is fine with analyzing module input tail optical fiber with 0 ° to axis welding when, analyzing module output tail optical fiber light power is approximately equal to 0, then 2 × 2 mill
Chip polarization-maintaining optical fiber beam splitter is slow axis work.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (10)
1. 2 × 2 polarization-maintaining optical fiber beam splitter working shaft detection method of one kind, which is characterized in that specific steps are as follows:
S1. the linearly polarized light along fast axis propagation is exported to wherein any one input tail of 2 × 2 polarization-maintaining optical fiber beam splitter to be measured
Fibre, the output power for measuring the linearly polarized light along fast axis propagation is P0；
S2. the output tail optical fiber corresponding with described wherein any one input tail optical fiber of 2 × 2 polarization-maintaining optical fiber beam splitter to be measured passes through
It is P that output power is measured after the analyzing module of fast axis propagation1；
S3. according to P1/P0Value judges 2 × 2 polarization-maintaining optical fiber beam splitter working shaft to be measured.
2. a kind of 2 × 2 polarization-maintaining optical fiber beam splitter working shaft detection method according to claim 1, which is characterized in that step
S3 specifically:
P1/P0In the first preset range, then 2 × 2 polarization-maintaining optical fiber beam splitter working shaft to be measured is fast axle；
P1/P0In the second preset range, by 2 × 2 polarization-maintaining optical fiber beam splitter to be measured and described wherein any one input tail optical fiber
It is P that corresponding output tail optical fiber measures output power after the analyzing module propagated along slow axis1', P1'/P0In the first default model
In enclosing, then 2 × 2 polarization-maintaining optical fiber beam splitter working shaft to be measured is slow axis, P1'/P0In the second preset range, then to be measured 2 × 2 protect
Inclined fiber optic splitter damage.
3. a kind of 2 × 2 polarization-maintaining optical fiber beam splitter working shaft detection method according to claim 1 or 2, which is characterized in that
The determination of color and index path and described wherein any one input tail optical fiber phase according to 2 × 2 polarization-maintaining optical fiber beam splitter tail optical fiber to be measured
Corresponding output tail optical fiber.
4. 2 × 2 polarization-maintaining optical fiber beam splitter working shaft detection system of one kind, the system include light source module, are polarized module, analyzing mould
Fast and detection module, the output tail optical fiber connection of light source module are polarized the input tail optical fiber of module, are polarized the output tail optical fiber connection of module
2 × 2 polarization-maintaining optical fiber beam splitter to be measured wherein any one input tail optical fiber, 2 × 2 polarization-maintaining optical fiber beam splitter to be measured with it is described its
In the corresponding output tail optical fiber connection analyzing module of any one input tail optical fiber input tail optical fiber, the output tail optical fiber of analyzing module connects
Connect the input tail optical fiber of detection module, which is characterized in that
Module output is polarized along the linearly polarized light of fast axis propagation, measures the output power value P for being polarized module output tail optical fiber0；
The polarization state of analyzing module is identical as the polarization state for being polarized module, and detection module measures analyzing module output tail optical fiber
Output power value P1；
According to P1/P0Value judges 2 × 2 polarization-maintaining optical fiber beam splitter working shaft to be measured.
5. a kind of 2 × 2 polarization-maintaining optical fiber beam splitter working shaft detection system according to claim 4, which is characterized in that
P1/P0In the first preset range, then 2 × 2 polarization-maintaining optical fiber beam splitter working shaft to be measured is fast axle；
P1/P0In the second preset range, by 2 × 2 polarization-maintaining optical fiber beam splitter to be measured and described wherein any one input tail optical fiber phase
For corresponding 90 ° of input tail optical fiber for exporting tail optical fiber and analyzing module to axis welding, detection module measures analyzing module output tail optical fiber
Performance number P1', P1'/P0In the first preset range, then 2 × 2 polarization-maintaining optical fiber beam splitter working shaft to be measured is slow axis；P1'/P0?
In second preset range, then 2 × 2 polarization-maintaining optical fiber beam splitter damage to be measured.
6. a kind of 2 × 2 polarization-maintaining optical fiber beam splitter working shaft detection system according to claim 4, which is characterized in that described
Light source module includes ASE light source, and ASE light source output linear polarization degree is less than the single-mode optics of 0.2dB.
7. a kind of 2 × 2 polarization-maintaining optical fiber beam splitter working shaft detection system according to claim 4, which is characterized in that described
Being polarized module includes a polarizer and input and output tail optical fiber, and the input tail optical fiber and output tail optical fiber for being polarized module are polarization maintaining optical fibre,
The polarizer is polarized direction and tail optical fiber fast axle into 0 ° of angle.
8. a kind of 2 × 2 polarization-maintaining optical fiber beam splitter working shaft detection system according to claim 4, which is characterized in that described
Analyzing module includes an analyzer and input and output tail optical fiber, and the input tail optical fiber and output tail optical fiber of analyzing module are polarization maintaining optical fibre,
The polarizer is polarized direction and tail optical fiber fast axle into 0 ° of angle.
9. a kind of 2 × 2 polarization-maintaining optical fiber beam splitter working shaft detection system according to claim 4, which is characterized in that described
Detection module includes light power meter, fiber clamp and naked fibre adapter, and fiber clamp is one with that can reverse positioning mechanism, is examined
It surveys module light power meter and is docked with naked fibre adapter by fiber clamp fixation.
10. 2 × 2 polarization-maintaining optical fiber beam splitter working shaft detection system of one kind according to any one of claim 4-9, special
Sign is that the color and index path according to 2 × 2 polarization-maintaining optical fiber beam splitter tail optical fiber to be measured determine and described wherein any one input
The corresponding output tail optical fiber of tail optical fiber.
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| CN201811385673.8A CN109655231B (en) | 2018-11-20 | 2018-11-20 | Method and system for detecting working axis of 2 × 2 polarization maintaining optical fiber beam splitter |
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| CN201811385673.8A CN109655231B (en) | 2018-11-20 | 2018-11-20 | Method and system for detecting working axis of 2 × 2 polarization maintaining optical fiber beam splitter |
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| CN109655231B CN109655231B (en) | 2020-07-14 |
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| CN111273409A (en) * | 2020-01-20 | 2020-06-12 | 中国科学院西安光学精密机械研究所 | System and method for realizing angle transmission by using polarization maintaining optical fiber |
| CN114397732A (en) * | 2021-12-21 | 2022-04-26 | 中国电子科技集团公司第四十三研究所 | Polarization-maintaining mode field conversion optical fiber slow axis direction control method |
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| CN109655231B (en) | 2020-07-14 |
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