CN113885146A - Coupling method for avoiding coupling shift of detector - Google Patents
Coupling method for avoiding coupling shift of detector Download PDFInfo
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- CN113885146A CN113885146A CN202111185511.1A CN202111185511A CN113885146A CN 113885146 A CN113885146 A CN 113885146A CN 202111185511 A CN202111185511 A CN 202111185511A CN 113885146 A CN113885146 A CN 113885146A
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- G—PHYSICS
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- 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
- G02B6/4219—Mechanical fixtures for holding or positioning the elements relative to each other in the couplings; Alignment methods for the elements, e.g. measuring or observing methods especially used therefor
- G02B6/4236—Fixing or mounting methods of the aligned elements
- G02B6/4245—Mounting of the opto-electronic elements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/353—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
- G01D5/35306—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using an interferometer arrangement
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- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
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- G01D5/3537—Optical fibre sensor using a particular arrangement of the optical fibre itself
- G01D5/3538—Optical fibre sensor using a particular arrangement of the optical fibre itself using a particular type of fiber, e.g. fibre with several cores, PANDA fiber, fiber with an elliptic core or the like
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Abstract
The invention discloses a coupling method for solving the problem of detector dislocation caused by polarized light of a single-fiber bidirectional optical device laser, which aims to solve the problem of detector dislocation caused by polarized light of the single-fiber bidirectional optical device laser. The invention is realized by the following technical scheme: firstly, coaxial laser of an optical fiber adapter (1) is welded on a tee joint (2), then a detector (5) is coupled with the optical fiber adapter (1), as the optical fiber adapter (1) and the tee joint (2) are coaxially welded, an incident light path (501) is coaxial with the detector (5) after being reflected by a 45-degree light filter (3), and finally the incident light path is coupled with the optical fiber adapter (1) by adjusting an emission light path (401) of a laser (4). The invention effectively solves the problem of detector dislocation caused by polarization of the single-fiber bidirectional optical device laser.
Description
Technical Field
The invention relates to a coupling method for avoiding coupling shift of a detector in the field of communication.
Background
The optical fiber sensing technology is a technology that various parameters of light waves transmitted in an optical fiber are modulated by using detected signals to obtain modulated signals, and the modulated signals are demodulated and restored into original signals to be detected through a detector. After the detection and signal processing by the detector, the signal to be detected can be demodulated. The coherent light emitted by the laser is divided into two paths of coherent light with the intensity of 1:1 after passing through the coupler, the two paths of coherent light are respectively transmitted along the clockwise direction and the anticlockwise direction, the coherent light passes through a multi-turn single-mode optical fiber ring and finally returns to the coupler to generate interference fringes, when the ring rotates for a certain angle at an angular speed, the optical paths of the light in the clockwise direction and the light in the anticlockwise direction are different, a phase difference is generated, and the interference fringes can be changed. And finally, detecting and demodulating the angular speed of the loop by a detector. The photodetector is one of indispensable devices in a broadband communication system, a wireless communication system and a high-frequency measurement system, and is also a core device in an optical receiver. The optical fiber coupling semiconductor laser module integrates a semiconductor laser, single-mode optical fiber coupling and firm modular packaging, and provides multiple working modes such as multiple wavelengths from ultraviolet to near infrared, multiple output power levels, continuous or modulated pulses and the like, and multiple light spot modes such as point-to-line and surface type modes. Typical lasers cause the optical cavity to deform due to thermo-mechanical effects, resulting in instability of the laser beam. Semiconductor lasers are also limited in their use by their unique deficiencies: for example, the large divergence angle makes the light beam difficult to transform and heavy to transmit; the existence of the asymmetry and the higher mode of the light spot makes the light spot difficult to focus; the high control precision requirements on conditions such as current and temperature limit the use of the device. The electric detector assembly is provided with the optical fiber pigtail, is an important field in the optical fiber gyroscope, has more complex application environment conditions and higher requirements on reliability and service life, and is one of photoelectric devices. The responsivity of the detector directly influences the performance of a bidirectional optical transceiver assembly (BOSA), and the coupling and packaging of the detector end occupy an important position in BOSA production. With the wide application of the fiber-optic gyroscope, the application of the photoelectric detector assembly in the field is wider and wider, and the working performance of the photoelectric detector assembly directly influences the precision and the reliability of the fiber-optic gyroscope. The optical fiber gyroscope has the advantages that photoelectric conversion and electric signal amplification are performed in the optical fiber gyroscope, and the precision and the reliability of the optical fiber gyroscope are directly influenced by a photoelectric detector (PIN) and the transimpedance performance due to the fact that the optical fiber gyroscope is composed of the amplifying circuit. The experimental results show that: the staggered linear detector images the ground, the odd and even image data of the detector have obvious dislocation deformation along the track direction, the emission light path (401) of the laser (4) polarizes light to cause the coupling of the optical fiber adapter (1) and the laser, the optical fiber adapter (1) and the tee joint (2) are dislocated and welded to cause the dislocation of the light path of the incident light path (501), the coupling dislocation of the detector (5) and the tee joint (2) is caused, and the responsivity of the detector is reduced after the test due to the coupling welding defect, wherein the horizontal deviation of a detector lens has the largest influence on the coupling efficiency, and the angle deviation of the wave plate and the height difference of the wave plate and the detector lens have smaller influence on the coupling efficiency. Due to the offset generated in the BOSA coupling and packaging process, the reduction of the responsivity of the photoelectric detector assembly can cause the output of the optical fiber gyro to be abnormal, and the reduction of the responsivity of the photoelectric detector assembly can cause the reduction and even the failure of the performance of the optical fiber gyro. The main cause of the reduced responsivity is the fiber coupling shift. In the subsequent use process after the electric detector assembly is installed, the failure mode of responsivity reduction caused by optical fiber coupling displacement is an influence factor causing the coupling displacement. In the subsequent use process, relative coupling displacement between the optical fiber and the PIN surface can be caused by various factors, so that the coupling efficiency coefficient is reduced, and the responsivity of the photoelectric detector assembly is reduced.
The single-fiber bidirectional optical device is very popular and widely used in the manufacturing and production field. Single-fiber bidirectional devices account for a large proportion of fiber-optic communications for civilian use. The intermode interference optical fiber sensing technology based on the single-mode optical fiber dislocation welding method is a technology which modulates various parameters of light waves transmitted in optical fibers by using detected signals to obtain modulation signals, and demodulates and restores the signals into original signals to be detected through a detector. The detector is often misplaced in the product, so that the single-fiber bidirectional optical device is often used after being corrected in the use process. According to a traditional coupling transmission method of a single-fiber bidirectional optical device, a laser and a tee joint are coaxially welded, an optical fiber adapter is coupled with the laser again, and finally a detector is coupled with the tee joint. In the actual production process, the laser cannot emit light completely without deviation, so that the optical fiber adapter needs to be coupled in a dislocation mode to adapt to the polarization problem of the laser, the incident light path is dislocated, and the coupling dislocation of the detector is influenced. The coupling efficiency and the optical fiber spacing are uniformly distributed under different offset angles. If there is contamination or residual solder inside the soldering hole or outside the optical fiber metal tube, the solder flow wettability is poor, and the solder distribution is not uniform. The welding hole body of the tube shell is made of kovar material (the coefficient of thermal expansion is 30 mu md and 30um0.9-6d and 60 mu m (4.6-5.5) multiplied by 10/K), and has a difference with the soldering temperature expansion coefficient (the coefficient of thermal expansion is 60um0.8 mu md and 120umd and 120 mu m27 multiplied by 10-6/K). Under the effect of thermal expansion and cold contraction stress, the soldering tin generates an extrusion stress effect on the welded metal tube, the solder is unevenly distributed, the generated extrusion stress is asymmetric, the metal tube can deflect, and the responsivity of the detector is reduced. In addition, the metalized optical fiber 0.2 is not firmly fixed in the metal tube and moves relatively, so that the coupling is also moved by 0.1 bit, and the responsivity is reduced. The device with large asymmetric stress in the optical fiber coupling displacement (the coupling efficiency coefficient is reduced) of the electric detector assembly is one of the main reasons for reducing the responsivity. The problems that the coupling deflection angle changes can affect the attenuation of the output responsivity of a front device and a rear device to different degrees compared with the change of the coupling distance under the condition of artificially causing the internal offset of a tube shell to be at the same angle in the coupling process of a photoelectric detector component due to various factors, the welding responsivity optical fiber displacement, the PIN photosensitive surface displacement and the uneven tube tin distribution are explained, the deformation of the coupling shell is the main factor causing the coupling displacement under the accumulation effect of the external temperature stress, and in order to ensure the stability of optical fiber coupling, the loss of luminous flux can be caused by the redundant coupling interface layer existing in the conventional design process and the conventional fiber light cone coupling type X-ray detector, the spatial resolution of the detector is reduced and the like.
Disclosure of Invention
The invention aims to solve the coupling problem of detector dislocation caused by polarization of a single-fiber bidirectional optical device laser, and provides a coupling method which can avoid coupling displacement of a detector in use, ensure that the detector is not dislocated in coupling, improve the spatial resolution, reduce light loss, effectively meet the product stability and avoid coupling displacement of the detector in use. The detector dislocation caused by the polarized light of the single-fiber bidirectional optical device laser is solved.
The above object of the present invention can be achieved by the following technical solutions, and a coupling method for preventing coupling shift of a detector is characterized by comprising the following steps: firstly, obtaining the offset angle and the responsivity drop value of the single-mode fiber pigtail at different fiber coupling intervals according to calculation, coaxially welding the adapter (1) in the axial direction of the detector on the tee joint (2), and reflecting an incident light path (501) by a 45-degree optical filter (3) arranged in the laser cavity of a laser (4) to realize the coaxial welding of the tee joint (2) and the detector (5); the optical fiber adapter (1) is welded with the tee joint (2) in a laser mode, and after an incident light path (501) is fixed, the optical fiber adapter is coupled with the optical fiber adapter (1) through an emission light path (401) of the adjusting laser (4).
A coupling method for solving the problem of detector dislocation caused by polarization of a single-fiber bidirectional optical device laser is characterized by comprising the following steps: firstly, coaxial laser of an optical fiber adapter (1) is welded on a tee joint (2), then a detector (5) is coupled with the optical fiber adapter (1), as the optical fiber adapter (1) and the tee joint (2) are coaxially welded, an incident light path (501) is coaxial with the detector (5) after being reflected by a 45-degree light filter (3), and finally the incident light path is coupled with the optical fiber adapter (1) by adjusting an emission light path (401) of a laser (4).
Compared with the prior art, the invention has the following beneficial effects.
The adapter (1) in the axial direction of the detector is coaxially laser-welded on the tee joint (2), and after an incident light path (501) is reflected by a 45-degree optical filter (3) arranged in a laser cavity of a laser (4), the tee joint (2) and the detector (5) are coaxially welded; as the coaxial laser of the optical fiber adapter (1) is welded on the tee joint (2), the incident light path (501) is reflected by the 45-degree light filter (3) to realize the coaxiality of the tee joint (2) and the detector (5), the dislocation of the detector is solved, and the product consistency is good. The problem that the responsivity of a photoelectric detector assembly is reduced due to the fact that the coupling efficiency coefficient is reduced due to relative coupling displacement of the optical fiber and the PIN surface caused by various factors can be solved. The stability of the optical fiber coupling structure of the photoelectric detector assembly can be improved, and the problems of optical fiber coupling displacement and responsivity reduction failure quality caused by uneven stress due to coupling welding defects are reduced.
The invention adopts laser welding of the optical fiber adapter (1) and the tee joint (2), and couples the optical fiber adapter (1) through the emission light path (401) of the adjusting laser (4) after the incident light path (501) is fixed. The laser welding method comprises the steps that firstly, the optical fiber adapter (1) and the tee joint (2) are subjected to laser welding, an incident light path (501) is fixed, then the transmitting light path (401) of the laser (4) is adjusted to be coupled with the optical fiber adapter (1), polarization of the transmitting light path (401) of the laser (4) is avoided, after the optical fiber adapter (1) is coupled with the laser, the optical fiber adapter (1) and the tee joint (2) are welded in a staggered mode, and the phenomenon that the light path of the incident light path (501) is staggered, and the detector (5) and the tee joint (2) are coupled and staggered is avoided. Coupling displacement of the detector during use is avoided, coupling dislocation of the detector is avoided, spatial resolution can be improved, light loss is reduced, product stability is effectively met, and dislocation of the detector caused by polarization of a single-fiber bidirectional optical device laser is avoided.
Drawings
Fig. 1 is a front view of a single fiber bi-directional optical device laser of the present invention.
In the figure: 1 optical fiber adapter, 2 tee joints, 345-degree optical filters, 4 lasers, 401 emission light paths, 5 detectors and 501 incident light paths.
See fig. 1. According to the invention, firstly, an adapter (1) in the axial direction of a detector is coaxially laser-welded on a tee joint (2), and after an incident light path (501) is reflected by a 45-degree optical filter (3) arranged in a laser cavity of a laser (4), the tee joint (2) and the detector (5) are coaxially welded; the optical fiber adapter (1) is welded with the tee joint (2) in a laser mode, and after an incident light path (501) is fixed, the optical fiber adapter is coupled with the optical fiber adapter (1) through an emission light path (401) of the adjusting laser (4).
Because the optical fiber and the photosensitive surface of the detector can only adopt a non-contact coupling mode (connection), the fixed optical fiber uses metal soldering tin. In laser welding, the metallized optical fiber is adjusted through a three-dimensional fine adjustment frame, the responsiveness reaches 3020 d-30 μm normal value range, the graphite heating body is used for heating the outer side of a shell welding hole, the solder wire is aligned to the shell welding hole with d-30 μm100, the shell welding hole is filled with the solder wire, the solder wire is taken out when the offset angle (°) is reached, and heating is stopped. The hole flow is uniformly distributed, and the coupling welding stress is ensured to be symmetrical.
The foregoing detailed description of the embodiments of the present invention has been presented for purposes of illustration and description, and is intended to be exemplary only; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (4)
1. A coupling method for avoiding coupling shift of a detector, comprising the steps of: firstly, coaxially laser welding an adapter (1) in the axial direction of a detector on a tee joint (2), and after an incident light path (501) is reflected by a 45-degree optical filter (3) arranged in a laser cavity of a laser (4), coaxially welding the tee joint (2) and the detector (5); the optical fiber adapter (1) is welded with the tee joint (2) in a laser mode, and after an incident light path (501) is fixed, the optical fiber adapter is coupled with the optical fiber adapter (1) through an emission light path (401) of the adjusting laser (4).
2. The coupling method for solving the problem of detector misalignment caused by laser polarization of the single-fiber bidirectional optical device as claimed in claim 1, wherein: as the coaxial laser of the optical fiber adapter (1) is welded on the tee joint (2), the incident light path (501) is reflected by the 45-degree optical filter (3) to realize the coaxiality of the tee joint (2) and the detector (5).
3. The coupling method for solving the problem of detector misalignment caused by laser polarization of the single-fiber bidirectional optical device as claimed in claim 1, wherein: since the optical fiber adapter (1) and the tee joint (2) are firstly subjected to laser welding, an incident light path (501) is fixed, and then the emission light path (401) of the adjusting laser (4) is coupled with the optical fiber adapter (1).
4. The coupling method for solving the problem of detector misalignment caused by laser polarization of the single-fiber bidirectional optical device as claimed in claim 1, wherein: because the coaxial laser welding of the optical fiber adapter (1) and the tee joint (2) is firstly carried out, the polarized light of a transmitting light path (401) of the laser (4) is avoided, and after the optical fiber adapter (1) is coupled with the laser, the optical fiber adapter (1) and the tee joint (2) are welded in a staggered mode, so that the light path of an incident light path (501) is staggered, and the coupling displacement of the detector (5) and the tee joint (2) is caused.
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| CN202111185511.1A CN113885146A (en) | 2021-10-12 | 2021-10-12 | Coupling method for avoiding coupling shift of detector |
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| CN202111185511.1A CN113885146A (en) | 2021-10-12 | 2021-10-12 | Coupling method for avoiding coupling shift of detector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114660743A (en) * | 2022-05-26 | 2022-06-24 | 四川泰瑞创通讯技术股份有限公司 | Optical module |
| CN115196250A (en) * | 2022-09-19 | 2022-10-18 | 山西戴德测控技术有限公司 | Foreign matter identification method, device and system and storage medium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203606534U (en) * | 2013-11-27 | 2014-05-21 | 四川光恒通信技术有限公司 | Novel CWDM single fiber bidirectional transceiver unit |
| CN213338117U (en) * | 2020-08-26 | 2021-06-01 | 广东瑞谷光网通信股份有限公司 | Light emitting and receiving integrated device with high coupling efficiency |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203606534U (en) * | 2013-11-27 | 2014-05-21 | 四川光恒通信技术有限公司 | Novel CWDM single fiber bidirectional transceiver unit |
| CN213338117U (en) * | 2020-08-26 | 2021-06-01 | 广东瑞谷光网通信股份有限公司 | Light emitting and receiving integrated device with high coupling efficiency |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114660743A (en) * | 2022-05-26 | 2022-06-24 | 四川泰瑞创通讯技术股份有限公司 | Optical module |
| CN115196250A (en) * | 2022-09-19 | 2022-10-18 | 山西戴德测控技术有限公司 | Foreign matter identification method, device and system and storage medium |
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