CN202771056U - Wedge-shaped filter plate for secondary light receiving and sending module - Google Patents
Wedge-shaped filter plate for secondary light receiving and sending module Download PDFInfo
- Publication number
- CN202771056U CN202771056U CN 201220261107 CN201220261107U CN202771056U CN 202771056 U CN202771056 U CN 202771056U CN 201220261107 CN201220261107 CN 201220261107 CN 201220261107 U CN201220261107 U CN 201220261107U CN 202771056 U CN202771056 U CN 202771056U
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- light
- filter plate
- light receiving
- wedge shape
- shape filter
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Abstract
A wedge-shaped filter plate for a secondary light receiving and sending module is mounted in the secondary light receiving and sending module. The secondary light receiving and sending module comprises a light emitting component and a light guide structure with a light fiber for transmitting a light signal. The wedge-shaped filter plate is arranged between the light emitting component and the light guide structure, and composed of a light incidence surface facing to the light emitting component, and a light emission surface facing to the light guide structure, wherein an included angle is present between the light incidence surface and the light emission surface, thus the light signal of the light emitting component incomes to the light emission surface and passes from the light emission surface, thus the refraction direction of the light signal is not parallel to the incidence direction of the light signal, and the light signal incomes into the light fiber by a preset angle, and thereby correcting the coaxiality of the light incidence direction of the light emitting component and the light emission direction of the light fiber, and obtaining the best coupling efficiency.
Description
Technical field
The utility model relates to a kind of light receiving and transmitting submodule that improves light coupling efficient wedge shape filter plate.
Background technology
In Fiber Optical Communication System, light receiving and transmitting submodule (Optical Sub-Assembly for Transceivers) is the important medium in light signal and the electric signal conversion, light receiving and transmitting submodule can be divided into can hold the bidirectional light receiving and transmitting submodule (Bi-direction Optical Sub-Assembly, BOSA) of twocouese message in same optical fiber simultaneously; And the types such as three-dimensional light receiving and transmitting submodule (Tri-direction Optical Sub-Assembly, TRI-DI OSA) that can receive simultaneously digital signal and analog signal and launch digital signal.
As shown in Figure 1, this BOSA, TRI-DI OSA have a luminescence component 10, and the light signal that it sends is incident in 11 refractions of planar shaped filter plate and is coupled in the optical fiber 13 of light guide structure 12, so that the light signal is transmitted.
With regard to theory of geometric optics, light beam shooting angle computing formula is nSIN (θ 1)=SIN (θ 1+ θ 2), wherein n: optical fibre refractivity, θ 1: optical fiber is in the grinding angle of headgear end face, and θ 2: the angle of shaft axis of optic fibre and light exit direction.Be incident to optical fiber and light according to this formula and light and be optimal path from optical fiber outgoing (being angle of light and light emergence angle θ 2) is coaxial.
Yet, the light signal incident direction of this luminescence component 10 and optical fiber 13 in line, and to penetrate direction not coaxial with optical fiber 13 emergent lights, and then cause the loss of incident light signal, this disappearance need to be remedied.
Summary of the invention
Fundamental purpose of the present utility model is to provide a kind of light receiving and transmitting submodule wedge shape filter plate, and it can changing under the work refraction angle condition, improve light coupling efficient.
The utility model light receiving and transmitting submodule wedge shape filter plate, be installed in the light receiving and transmitting submodule, this light receiving and transmitting submodule comprises a luminescence component, and a light guide structure has the optical fiber that can transmit the light signal, this wedge shape filter plate is between this luminescence component and light guide structure, and this wedge shape filter plate comprises:
One incidence surface is towards this luminescence component;
One exiting surface, towards this light guide structure, has an angle between this incidence surface and the exiting surface, make the light signal of this luminescence component be incident to this incidence surface and by behind this exiting surface, cause the incident direction of refractive direction that the light signal produces and light signal not parallel, and be incident in this optical fiber with predetermined angle, coaxial in order to the light exit direction of the light incident direction of correcting luminescence component and optical fiber.
This incidence surface is with respect to this exiting surface.
This angle is not more than 90 degree.
This angle is between 1～25 degree.
Compared with prior art, the utility model compared with prior art, the beneficial effect that has is: form an angle between the incidence surface of the utility model wedge shape filter plate and the exiting surface, after the light signal of luminescence component is incident to this incidence surface and passes through this exiting surface, cause the light signal incident direction of refractive direction that the light signal produces and former this incidence surface of projection not parallel, and be incident in the optical fiber with this predetermined angle, thereby can be used to correct light and be incident to the optical fiber direction with coaxial from the optical fiber exit direction, to reduce the loss of incident light signal.
In order further to understand the utility model feature and technology contents, please consult in detail following about detailed description of the present utility model and accompanying drawing, appended graphic only for reference with usefulness is described, be not that the utility model is done any restriction.
Description of drawings
Fig. 1 is the sectional drawing that known filter plate is placed in light receiving and transmitting submodule, and it shows the light path synoptic diagram of incident light signal and emergent light signal.
Fig. 2 is the utility model stereographic map.
Fig. 3 is the utility model sectional view.
Fig. 4 is the sectional view that the utility model filter plate is placed in light receiving and transmitting submodule, and it shows incident light signal and the homoaxial light path synoptic diagram of emergent light signal.
Label declaration:
Wedge shape filter plate 20;
Exiting surface 22;
Angle theta 3;
Tiltangleθ 4;
Light receiving and transmitting submodule 30;
Body 31;
Luminescence component 32;
Light guide structure 33;
Optical fiber 34.
Embodiment
See also Fig. 2 and shown in Figure 3, the utility model light receiving and transmitting submodule can be applicable to BOSA, TRI-DI OSA with wedge shape filter plate 20, and this wedge shape filter plate 20 comprises an incidence surface 21; Reach an exiting surface 22 with respect to this incidence surface 21, form an angle theta 3 (being key groove) between this incidence surface 21 and the exiting surface 22, this angle is an acute angle, and therefore, this incidence surface 21 is not parallel each other with exiting surface 22.This angle theta 3 is best between 1～25 degree.
Fig. 4 shows that the utility model wedge shape filter plate 20 is installed on the sectional view of a light receiving and transmitting submodule 30, this wedge shape filter plate 20 is arranged in the body 31 and between luminescence component 32 and light guide structure 33, wherein, the incidence surface 21 of this wedge shape filter plate 20 is towards this luminescence component 32, and this exiting surface 22 is towards this light guide structure 33; When the light signal X that sends when luminescence component 32 is projeced into the incidence surface 21 of this wedge shape filter plate 20, when the light signal of this incident enters this wedge shape filter plate 20, to contain key groove θ 3 not parallel with exiting surface 22 because of incidence surface 21, cause refractive direction and the direction of light signal X of light signal by this exiting surface 22 rear generation light signal Y not parallel each other, and be incident in the optical fiber 34 of light guide structure 33 with this predetermined tiltangleθ 4, make the light exit direction of the light incident direction of luminescence component 32 and optical fiber 34 coaxial, to satisfy the computing formula of light beam shooting angle, the light signal that allows this luminescence component 32 send can be assembled in a large number and is coupled to optical fiber 34, to reduce coupling loss, significantly improve light coupling efficient.
Therefore, the utility model wedge shape filter plate 20 can change the work refraction angle, and is coaxial in order to the light exit direction of the light incident direction of correcting luminescence component 32 and optical fiber 34, obtains best light coupling efficient.
Above said content is only for the explanation of this case one preferred embodiment, rather than the utility model is imposed any restrictions.Any this skill person that is familiar with may utilize above-mentioned technology contents to be changed or modify to become other embodiment and still not break away from the utility model spirit and category, and the utility model scope is only limited by claims.
Claims (4)
1. light receiving and transmitting submodule wedge shape filter plate, be installed in the light receiving and transmitting submodule, this light receiving and transmitting submodule comprises a luminescence component, and a light guide structure has the optical fiber that can transmit the light signal, this wedge shape filter plate is characterized in that this wedge shape filter plate comprises between this luminescence component and light guide structure:
One incidence surface is towards this luminescence component;
One exiting surface, towards this light guide structure, has an angle between this incidence surface and the exiting surface, make the light signal of this luminescence component be incident to this incidence surface and by behind this exiting surface, cause the incident direction of refractive direction that the light signal produces and light signal not parallel, and be incident in this optical fiber with predetermined angle, coaxial in order to the light exit direction of the light incident direction of correcting luminescence component and optical fiber.
2. light receiving and transmitting submodule as claimed in claim 1 wedge shape filter plate is characterized in that, this incidence surface is with respect to this exiting surface.
3. light receiving and transmitting submodule as claimed in claim 1 wedge shape filter plate is characterized in that, this angle is not more than 90 degree.
4. light receiving and transmitting submodule as claimed in claim 1 wedge shape filter plate is characterized in that, this angle is between 1～25 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220261107 CN202771056U (en) | 2012-06-05 | 2012-06-05 | Wedge-shaped filter plate for secondary light receiving and sending module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220261107 CN202771056U (en) | 2012-06-05 | 2012-06-05 | Wedge-shaped filter plate for secondary light receiving and sending module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202771056U true CN202771056U (en) | 2013-03-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220261107 Expired - Lifetime CN202771056U (en) | 2012-06-05 | 2012-06-05 | Wedge-shaped filter plate for secondary light receiving and sending module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202771056U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107346052A (en) * | 2016-05-06 | 2017-11-14 | 珠海保税区光联通讯技术有限公司 | Optics module and the optical device for possessing the optics module |
| CN109143493A (en) * | 2018-08-21 | 2019-01-04 | 青岛海信宽带多媒体技术有限公司 | A kind of optical receiver and optical module |
| CN109471120A (en) * | 2018-12-29 | 2019-03-15 | 上海兰宝传感科技股份有限公司 | Laser triangulation system and method |
-
2012
- 2012-06-05 CN CN 201220261107 patent/CN202771056U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107346052A (en) * | 2016-05-06 | 2017-11-14 | 珠海保税区光联通讯技术有限公司 | Optics module and the optical device for possessing the optics module |
| CN107346052B (en) * | 2016-05-06 | 2021-06-04 | 珠海保税区光联通讯技术有限公司 | Optical module and optical apparatus having the same |
| CN109143493A (en) * | 2018-08-21 | 2019-01-04 | 青岛海信宽带多媒体技术有限公司 | A kind of optical receiver and optical module |
| CN109471120A (en) * | 2018-12-29 | 2019-03-15 | 上海兰宝传感科技股份有限公司 | Laser triangulation system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130306 |