CN110346872B - Optical fiber array structure with polarization beam splitter prism isolator - Google Patents
Optical fiber array structure with polarization beam splitter prism isolator Download PDFInfo
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- CN110346872B CN110346872B CN201910751742.0A CN201910751742A CN110346872B CN 110346872 B CN110346872 B CN 110346872B CN 201910751742 A CN201910751742 A CN 201910751742A CN 110346872 B CN110346872 B CN 110346872B
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- fiber array
- isolator
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- beam splitter
- prism
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- 230000010287 polarization Effects 0.000 title claims abstract description 68
- 239000013307 optical fiber Substances 0.000 title abstract description 26
- 239000000835 fiber Substances 0.000 claims description 14
- 230000008878 coupling Effects 0.000 claims description 11
- 238000010168 coupling process Methods 0.000 claims description 11
- 238000005859 coupling reaction Methods 0.000 claims description 11
- 238000010030 laminating Methods 0.000 claims description 3
- 230000010354 integration Effects 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 4
- 230000003287 optical effect Effects 0.000 description 5
- 239000000758 substrate Substances 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- 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
- G02B6/26—Optical coupling means
- G02B6/27—Optical coupling means with polarisation selective and adjusting means
- G02B6/2746—Optical coupling means with polarisation selective and adjusting means comprising non-reciprocal devices, e.g. isolators, FRM, circulators, 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
- G02B6/26—Optical coupling means
- G02B6/27—Optical coupling means with polarisation selective and adjusting means
- G02B6/2753—Optical coupling means with polarisation selective and adjusting means characterised by their function or use, i.e. of the complete device
- G02B6/2773—Polarisation splitting or combining
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The invention provides an optical fiber array structure with a polarization splitting prism isolator, which comprises an isolator for receiving linearly polarized light emitted by a laser, an optical fiber array for receiving light passing through the isolator and at least one connector for receiving light passing through the optical fiber array, wherein the isolator comprises a polarizing plate for allowing the linearly polarized light emitted by the laser to pass through, a Faraday rotating plate for rotating the polarization direction of the linearly polarized light passing through the polarizing plate and a polarization splitting prism for steering the light passing through the Faraday rotating plate, and the polarization splitting prism is in a right triangle shape, and one right-angled side surfaces of the polarizing plate and the polarization splitting prism are respectively attached to two side surfaces of the Faraday rotating plate. Compared with the prior art, the structure only uses 1 polaroid, so that the use of the polaroid is reduced, and the material cost is reduced; the polarization beam splitter prism replaces the refraction prism in the original structure, reduces the number of discrete components in the light emission submodule and improves the integration level.
Description
Technical Field
The invention relates to the field of optical communication, in particular to an optical fiber array structure with a polarization splitting prism isolator.
Background
The optical emission sub-module (TRANSMITTER OPTICAL SUBASSEMBLY; TOSA) in the field of optical communications generally includes a laser 6, a refractive prism 5, a coupling lens 4, an isolator 1 and an optical fiber array 2, where the light emitted by the laser 6 is upward, and is focused by the coupling lens 4 by changing the optical path to a horizontal direction through the refractive prism 5, and then enters the optical fibers on the optical fiber array 2 after passing through the isolator 1, and then enters the connector 3. The conventional isolator 1 is formed by sequentially gluing a first polaroid 103, a Faraday rotator 102 and a second polaroid 103 into a whole, and then the isolator is adhered to the end face of the optical fiber array 2, so that 2 polaroids are needed, and most polaroids are dependent on import and are high in cost at present. In the prior art, the number of discrete parts is large, and the dimming coupling cost is difficult to reduce.
Disclosure of Invention
In view of the above problems, the present invention provides an optical fiber array structure with a polarization beam splitter prism isolator, which can reduce material cost, improve integration level, reduce low dimming and coupling difficulties, and reduce assembly cost.
The invention adopts the technical scheme that:
The utility model provides a take fiber array structure of polarization beam splitter prism isolator, includes the isolator that is used for receiving the linearly polarized light that the laser sent, is used for receiving the fiber array of the light that passes through the isolator and is used for receiving the connector of the fiber array light, the isolator includes the polarizing plate that is used for the linearly polarized light that the laser sent to pass, is used for carrying out the polarization direction of the linearly polarized light that passes the polarizing plate and rotates the polarization beam splitter prism that is used for carrying out the steering to the light that passes the polarizing plate, polarization beam splitter prism is right triangle-shaped, and one right angle side of polarizing plate and polarization beam splitter prism laminate the both sides face of faraday rotation plate respectively, fiber array includes the base member, is equipped with at least one passageway that is used for the light that passes through polarization beam splitter prism steering on the base member, each connector and each passageway one-to-one, and the other right angle side laminating of polarization beam splitter prism is at the side of base member.
Preferably, the polarization direction of the polarizer is consistent with that of the laser, and an antireflection film is also plated on the polarizer.
Preferably, a polarization beam splitting film is plated on the inclined plane of the polarization beam splitting prism.
Preferably, the front end of the polarizing plate is further provided with a coupling lens for focusing the linearly polarized light emitted from the laser.
Preferably, the base body is further fitted with a cover plate.
Preferably, the channel in the substrate is in the shape of a V-shaped groove.
Compared with the prior art, the invention has the beneficial effects that: the invention provides an optical fiber array structure with a polarization splitting prism isolator, which adopts the isolator structure of a polarization splitting prism, a Faraday rotation plate and a polaroid, and only uses 1 polaroid, so that the use of the polaroid is reduced, and the material cost is reduced; the polarization beam splitter prism also replaces the refraction prism in the original structure, reduces the number of discrete components of the light emission sub-module, improves the integration level, reduces the dimming and coupling difficulties and reduces the assembly cost.
Drawings
FIG. 1 is a schematic diagram of a prior art light emitting sub-module;
FIG. 2 is a front view of an optical fiber array structure with a polarization splitting prism isolator according to the present invention;
FIG. 3 is a top view of an optical fiber array structure with a polarization splitting prism isolator according to the present invention;
fig. 4 is a top view of multiple channels in an optical fiber array structure with a polarization splitting prism isolator according to the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 2 to 4 are schematic views showing a preferred embodiment of an optical fiber array structure with a polarization splitting prism isolator according to the present invention. The optical fiber array structure with the polarization splitting prism isolator comprises an isolator 10 for receiving linearly polarized light emitted by a laser 100, an optical fiber array 20 for receiving light passing through the isolator, and at least one connector 30 for receiving light passing through the optical fiber array, wherein the linearly polarized light emitted by the laser 100 passes through the isolator 10 and the optical fiber array 20 and finally enters the connector 30.
The isolator 10 comprises a polarizing plate 11 for passing through linearly polarized light emitted by a laser, a Faraday rotary plate 12 for rotating the polarization direction of the linearly polarized light passing through the polarizing plate 11, and a polarization splitting prism 13 for steering the light passing through the Faraday rotary plate, wherein the polarization splitting prism 13 is in a right triangle shape, one right-angle side surfaces of the polarizing plate 11 and the polarization splitting prism 13 are respectively attached to two side surfaces of the Faraday rotary plate 12, the optical fiber array 20 comprises a substrate 21, at least one channel 211 for passing through the light steering by the polarization splitting prism is arranged on the substrate 21, each connector 30 corresponds to each channel 211 one by one, and the other right-angle side surface of the polarization splitting prism 12 is attached to the side surface of the substrate 21.
The polarization direction of the polarizer 11 is identical to that of the laser 100, and an antireflection film is further coated on the polarizer 11. The faraday rotator 12 can rotate the polarization angle of linearly polarized light by 45 degrees. The inclined plane of the polarization beam splitter prism 13 is plated with a polarization beam splitter film. The front end of the polarizer 11 is further provided with a coupling lens 40 for focusing the linearly polarized light emitted from the laser 100, and the linearly polarized light emitted from the laser 100 enters the polarizer 11 after being focused by the coupling lens 40.
The base 21 is also matched with a cover plate 22, a channel 211 in the base is in a V-shaped groove shape, and an optical fiber 212 for light passing through is arranged in the groove. The number of the channels 211 in the matrix 21 is N, N is larger than or equal to 1, as shown in FIG. 3, one channel 211 is arranged in the matrix, and the channel 211 corresponds to one connector 30; as shown in fig. 4, four channels 211 are provided in the base body, and each channel 211 corresponds to one connector 30.
The specific working process of the whole optical fiber array structure with the polarization splitting prism isolator is as follows: the laser 100 emits linearly polarized light, the linearly polarized light enters the polaroid 11 after being directly focused by the coupling lens 40, the polarization direction of the polaroid 11 is consistent with the polarization direction of the laser, the linearly polarized light rotates 45 degrees after passing through the Faraday rotary plate 12, the polarization direction enters the polarization splitting prism 13, the linearly polarized light is reflected on an inclined plane of the polarization splitting prism 13 plated with a polarization splitting film, the reflected light horizontally enters the optical fiber array 20, and then enters the connectors 30 through the channels 211 of the optical fiber array 20; when stray light returns, the reflected light propagates from the optical fiber array 20 to the inclined plane coated with the polarization splitting film of the polarization splitting prism 13, and enters the faraday rotation plate 12 as linearly polarized light, the polarization direction rotates 45 degrees, the polarization direction forms 90 degrees with the polarization direction of the polarizing plate 11, and the returned stray light is isolated. The whole fiber array structure with the polarization splitting prism isolator adopts the isolator structure of the polarization splitting prism, the Faraday rotation plate and the polaroid, and only 1 polaroid is used, so that the use of the polaroid is reduced, and the material cost is reduced; the polarization beam splitter prism also replaces the refraction prism in the original structure, reduces the number of discrete components of the light emission sub-module, improves the integration level, reduces the dimming and coupling difficulties and reduces the assembly cost.
In summary, the technical solution of the present invention can fully and effectively achieve the above-mentioned objects, and the structural and functional principles of the present invention have been fully verified in the embodiments, so as to achieve the intended effects and purposes, and various changes or modifications may be made to the embodiments of the present invention without departing from the principles and spirit of the present invention. Accordingly, this invention includes all modifications encompassed within the scope of the invention as described in the claims and any equivalent thereof as would be within the scope of the invention as expressed in the claims.
Claims (6)
1. The utility model provides a take fiber array structure of polarization beam splitter prism isolator, its characterized in that includes the isolator that is used for receiving the linearly polarized light that the laser sent, is used for receiving the fiber array of the light that passes through the isolator and at least one connector that is used for receiving the fiber array light, the isolator includes the polarizing plate that is used for the linearly polarized light that the laser sent to pass, is used for going on rotating the polarization direction of the linearly polarized light that passes the polarizing plate and is used for carrying out the polarization beam splitter prism who turns to the light that passes the polarizing plate, polarization beam splitter prism is right triangle-shaped, and one right angle side of polarizing plate and polarization beam splitter prism laminating respectively faraday rotation plate's both sides face, fiber array includes the base member, is equipped with at least one passageway that is used for the light that passes through polarization beam splitter prism to turn to on the base member, and each connector corresponds with each passageway one by one, and polarization beam splitter prism's another right angle side laminating is in the side of base member.
2. The fiber array structure with polarization splitting prism isolator according to claim 1, wherein: the polarization direction of the polaroid is consistent with that of the laser, and an antireflection film is also plated on the polaroid.
3. The fiber array structure with polarization splitting prism isolator according to claim 1, wherein: the inclined plane of the polarization beam splitter prism is plated with a polarization beam splitter film.
4. The fiber array structure with polarization splitting prism isolator according to claim 1, wherein: the front end of the polaroid is also provided with a coupling lens for focusing the linearly polarized light emitted from the laser.
5. The fiber array structure with polarization splitting prism isolator according to claim 1, wherein: the base body is also matched with a cover plate.
6. The fiber array structure with polarization splitting prism isolator according to claim 1, wherein: the channel in the base body is in a V-shaped groove shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910751742.0A CN110346872B (en) | 2019-08-15 | 2019-08-15 | Optical fiber array structure with polarization beam splitter prism isolator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910751742.0A CN110346872B (en) | 2019-08-15 | 2019-08-15 | Optical fiber array structure with polarization beam splitter prism isolator |
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| Publication Number | Publication Date |
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| CN110346872A CN110346872A (en) | 2019-10-18 |
| CN110346872B true CN110346872B (en) | 2024-06-18 |
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| CN113495333B (en) * | 2020-04-01 | 2025-09-05 | 福州高意光学有限公司 | A small integrated optical component for high-speed BOSA devices |
| CN113050241A (en) * | 2021-03-31 | 2021-06-29 | 武汉华工正源光子技术有限公司 | Optical module assembling method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN210376755U (en) * | 2019-08-15 | 2020-04-21 | 北极光电(深圳)有限公司 | Optical fiber array structure with polarization splitting prism isolator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2840707B2 (en) * | 1989-12-26 | 1998-12-24 | 京セラ株式会社 | Optical isolator |
| CN203422496U (en) * | 2013-09-18 | 2014-02-05 | 福州高意通讯有限公司 | Transmitter wavelength division multiplexing optical structure and optical transmitter module |
| CN104459904B (en) * | 2013-09-18 | 2016-05-04 | 福州高意通讯有限公司 | A kind of single fiber bi-directional BOSA structure |
| CN203535266U (en) * | 2013-11-08 | 2014-04-09 | 昂纳信息技术（深圳）有限公司 | Multi-wavelength optical transceiver module of single optical fiber coupling |
| CN104635306A (en) * | 2013-11-08 | 2015-05-20 | 昂纳信息技术（深圳）有限公司 | Multi-wavelength optical transceiver module of single optical fiber coupling |
| CN104734800B (en) * | 2013-12-24 | 2017-11-24 | 华为技术有限公司 | A kind of optical multiplexer and transmitting optical device |
| CN204143105U (en) * | 2014-10-13 | 2015-02-04 | 武汉锐科光纤激光器技术有限责任公司 | A kind of high power optical isolator of small size |
| CN208013593U (en) * | 2018-03-15 | 2018-10-26 | 中国科学技术大学 | A kind of faraday isolator device |
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| CN210376755U (en) * | 2019-08-15 | 2020-04-21 | 北极光电(深圳)有限公司 | Optical fiber array structure with polarization splitting prism isolator |
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