CN2798127Y - Micro optical polarized beam splitting device - Google Patents
Micro optical polarized beam splitting device Download PDFInfo
- Publication number
- CN2798127Y CN2798127Y CNU200520016044XU CN200520016044U CN2798127Y CN 2798127 Y CN2798127 Y CN 2798127Y CN U200520016044X U CNU200520016044X U CN U200520016044XU CN 200520016044 U CN200520016044 U CN 200520016044U CN 2798127 Y CN2798127 Y CN 2798127Y
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- collimating apparatus
- polarization
- micro
- collimator
- optical fiber
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Abstract
The utility model discloses a micro optical polarized beam splitter which is formed by applying the principle of micro optics. A birefringence crystal is arranged on the middle part inside a capillary, one end of the capillary is provided with a collimator, the input end of the collimator is bonded with an optical fiber, and the output end of the collimator is bonded with the birefringence crystal; the other end of the capillary is provided with a first polarization-maintaining collimator and a second polarization-maintaining collimator which are parallelly ranged, and the first polarization-maintaining collimator and the second polarization-maintaining collimator are in bonding connection with the birefringence crystal; the other end of the first polarization-maintaining collimator is bonded with a first polarization-maintaining optical fiber, and the other end of the second polarization-maintaining collimator is bonded with a second polarization-maintaining optical fiber. The utility model has the advantages of simple and compact structure and stable temperature performance, and the utility model can work within a temperature range from-40 DEG C to 85 DEG C.
Description
Technical field
The utility model relates to a kind of micro-optic polarization beam apparatus inclined to one side and the inclined to one side function of guarantor that had.
Background technology
Traditional beam splitter such as coupling mechanism, circulator have not had inclined to one side function, and because its tail optical fiber is a single-mode fiber, can not keep polarization mode in the single-mode fiber.If device relevant with polarization such as modulator are arranged in the light path system, must before some devices relevant such as modulator, add a polarizer with polarization, increase thereby make light path system insert loss, the size of insertion loss has very large influence to the stability of total system for optical fiber current mutual inductor.
Summary of the invention
In order to overcome the defective that traditional beam splitter tail optical fiber has only single-mode fiber, the utility model proposes and a kind ofly have two tail optical fibers and had partially and protected the micro-optic polarization beam apparatus of inclined to one side function concurrently.
A kind of micro-optic polarization beam apparatus of the present utility model, by optical fiber, collimating apparatus, birefringece crystal, first protects inclined to one side collimating apparatus, second protects inclined to one side collimating apparatus, first polarization maintaining optical fibre and second polarization maintaining optical fibre constitute, birefringece crystal is placed in the middle part in the kapillary, an end capillaceous is laid collimating apparatus, the gluing connection optical fiber of input one end of collimating apparatus, the output terminal of collimating apparatus is adhesive with birefringece crystal, the other end capillaceous is laid first of parallel discharging and is protected inclined to one side collimating apparatus and the inclined to one side collimating apparatus of second guarantor, the first inclined to one side collimating apparatus of guarantor and second is protected inclined to one side collimating apparatus and is connected with birefringece crystal is gluing, first other end of protecting inclined to one side collimating apparatus is adhesive with first polarization maintaining optical fibre, and second other end of protecting inclined to one side collimating apparatus is adhesive with second polarization maintaining optical fibre.
Described micro-optic polarization beam apparatus, the optical fiber that is adhesive in the collimating apparatus input end can be single-mode fiber or polarization maintaining optical fibre.
Described micro-optic polarization beam apparatus, birefringece crystal and first protect inclined to one side collimating apparatus and the second gluing distance of protecting inclined to one side collimating apparatus is 2～3mm.
Described micro-optic polarization beam apparatus, its operating ambient temperature are-40 ℃～+ 85 ℃.
Described micro-optic polarization beam apparatus can be used in optical fibre gyro or optical fiber current mutual inductor or the optical-fibre communications.
The advantage of the utility model micro-optic polarization beam apparatus: simple in structure, compact; Temperature performance is stable, can work in-40 ℃～+ 85 ℃ temperature ranges, and have inclined to one side and the inclined to one side function of guarantor; This micro-optic polarization beam apparatus can be produced in batches.
Description of drawings
Fig. 1 is the cut-open view of the utility model micro-optic polarization beam apparatus.
Fig. 2 is that the light path of the utility model micro-optic polarization beam apparatus is moved towards synoptic diagram.
Among the figure: 1. optical fiber 2. collimating apparatuss 3. birefringece crystals 4. first are protected inclined to one side collimating apparatus 5. first polarization maintaining optical fibres 6. second and are protected inclined to one side collimating apparatus 7. second polarization maintaining optical fibres 8. housings 9. kapillaries
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
See also shown in Figure 1, the utility model is a kind of micro-optic polarization beam apparatus, by optical fiber 1, collimating apparatus 2, birefringece crystal 3, first protects inclined to one side collimating apparatus 4, second protects inclined to one side collimating apparatus 6, first polarization maintaining optical fibre 5 and second polarization maintaining optical fibre 7 constitute, birefringece crystal 3 is placed in the middle part in the kapillary 9, one end of kapillary 9 is laid collimating apparatus 2, the gluing connection optical fiber 1 of input one end of collimating apparatus 2, the output terminal of collimating apparatus 2 is adhesive with birefringece crystal 3, the other end of kapillary 10 is laid first of parallel discharging and is protected inclined to one side collimating apparatus 4 and the inclined to one side collimating apparatus 6 of second guarantor, first protects inclined to one side collimating apparatus 4 protects inclined to one side collimating apparatus 6 and 3 gluing connections of birefringece crystal with second, and gluing distance is 2mm, the other end that first other end of protecting inclined to one side collimating apparatus 4 is adhesive with the inclined to one side collimating apparatus 6 of first polarization maintaining optical fibre, 5, the second guarantors is adhesive with second polarization maintaining optical fibre 7.
Micro-optic polarization beam apparatus of the present utility model, the optical fiber 1 that is adhesive in collimating apparatus 2 input ends can be single-mode fiber or polarization maintaining optical fibre.
See also shown in Figure 2, the input end natural light becomes space parallel light behind collimating apparatus 2 collimations, be divided into this two bundles polarization state different linearly polarized light of o light and e light again behind birefringece crystal 3, o light and e light are respectively through the first two different bunch polarized lights of protecting after first polarization maintaining optical fibre 5, second polarization maintaining optical fibre 7 that converge to output terminal after inclined to one side collimating apparatus 4, second is protected inclined to one side collimating apparatus 6 are beam splitting of polarization state.
Polarization beam apparatus manufacture craft of the present utility model is simple, is easy to mass production; Usable range is extensive, can be used in optical fibre gyro or optical fiber current mutual inductor or the optical-fibre communications as light-splitting device.Its operating temperature range is-40 ℃～+ 85 ℃, and is comparatively stable-20 ℃～+ 50 ℃ performances.
Claims (5)
1, a kind of micro-optic polarization beam apparatus, it is characterized in that: by optical fiber (1), collimating apparatus (2), birefringece crystal (3), first protects inclined to one side collimating apparatus (4), second protects inclined to one side collimating apparatus (6), first polarization maintaining optical fibre (5) and second polarization maintaining optical fibre (7) constitute, birefringece crystal (3) is placed in the middle part in the kapillary (9), one end of kapillary (9) is laid collimating apparatus (2), the gluing connection optical fiber of input one end (1) of collimating apparatus (2), the output terminal of collimating apparatus (2) is adhesive with birefringece crystal (3), the other end of kapillary (10) is laid first of parallel discharging and is protected inclined to one side collimating apparatus (4) and second guarantor's inclined to one side collimating apparatus (6), first protects inclined to one side collimating apparatus (4) protects inclined to one side collimating apparatus (6) and gluing connection of birefringece crystal (3) with second, first other end of protecting inclined to one side collimating apparatus (4) is adhesive with first polarization maintaining optical fibre (5), and second other end of protecting inclined to one side collimating apparatus (6) is adhesive with second polarization maintaining optical fibre (7).
2, micro-optic polarization beam apparatus according to claim 1 is characterized in that: the optical fiber (1) that is adhesive in collimating apparatus 2 input ends can be single-mode fiber or polarization maintaining optical fibre.
3, micro-optic polarization beam apparatus according to claim 1 is characterized in that: inclined to one side collimating apparatus (4) protected by birefringece crystal (3) and first and the second gluing distance of protecting inclined to one side collimating apparatus (6) is 2～3mm.
4, micro-optic polarization beam apparatus according to claim 1 is characterized in that: operating ambient temperature is one 40 ℃～+ 85 ℃.
5, micro-optic polarization beam apparatus according to claim 1, it is characterized in that: the working environment preferred temperature is-20 ℃～+ 50 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200520016044XU CN2798127Y (en) | 2005-04-15 | 2005-04-15 | Micro optical polarized beam splitting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200520016044XU CN2798127Y (en) | 2005-04-15 | 2005-04-15 | Micro optical polarized beam splitting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2798127Y true CN2798127Y (en) | 2006-07-19 |
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ID=36869374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200520016044XU Expired - Fee Related CN2798127Y (en) | 2005-04-15 | 2005-04-15 | Micro optical polarized beam splitting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2798127Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393198A (en) * | 2011-10-20 | 2012-03-28 | 武汉虹拓新技术有限责任公司 | Optical gyroscope |
| CN103676005A (en) * | 2013-11-22 | 2014-03-26 | 北京航空航天大学 | Crystalline birefringent effect based bidirectional optical fiber polarization multiplexer |
| CN109814205A (en) * | 2019-03-09 | 2019-05-28 | 珠海市杰威光电科技有限公司 | A kind of polarization beam apparatus |
| CN113093223A (en) * | 2021-04-12 | 2021-07-09 | 广州降光科技有限公司 | Laser ceilometer |
-
2005
- 2005-04-15 CN CNU200520016044XU patent/CN2798127Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393198A (en) * | 2011-10-20 | 2012-03-28 | 武汉虹拓新技术有限责任公司 | Optical gyroscope |
| CN102393198B (en) * | 2011-10-20 | 2015-04-08 | 武汉虹拓新技术有限责任公司 | Optical gyroscope |
| CN103676005A (en) * | 2013-11-22 | 2014-03-26 | 北京航空航天大学 | Crystalline birefringent effect based bidirectional optical fiber polarization multiplexer |
| CN103676005B (en) * | 2013-11-22 | 2016-04-20 | 北京航空航天大学 | Based on the bidirectional optical fiber polarization multiplexer of crystal birefringence effect |
| CN109814205A (en) * | 2019-03-09 | 2019-05-28 | 珠海市杰威光电科技有限公司 | A kind of polarization beam apparatus |
| CN113093223A (en) * | 2021-04-12 | 2021-07-09 | 广州降光科技有限公司 | Laser ceilometer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |