CN111123443A - Structure for realizing optical coaxiality by utilizing wedge angle sheet and application thereof - Google Patents
Structure for realizing optical coaxiality by utilizing wedge angle sheet and application thereof Download PDFInfo
- Publication number
- CN111123443A CN111123443A CN202010065112.0A CN202010065112A CN111123443A CN 111123443 A CN111123443 A CN 111123443A CN 202010065112 A CN202010065112 A CN 202010065112A CN 111123443 A CN111123443 A CN 111123443A
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- China
- Prior art keywords
- light
- wedge angle
- piece
- connector
- wedge
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Classifications
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- 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
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/381—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
- G02B6/3818—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres of a low-reflection-loss type
-
- 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
- G02B6/32—Optical coupling means having lens focusing means positioned between opposed fibre ends
-
- 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
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
- G02B6/3845—Details of mounting fibres in ferrules; Assembly methods; Manufacture ferrules comprising functional elements, e.g. filters
-
- 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
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4298—Coupling light guides with opto-electronic elements coupling with non-coherent light sources and/or radiation detectors, e.g. lamps, incandescent bulbs, scintillation chambers
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The invention provides a structure for realizing light coaxiality by utilizing a wedge angle sheet. The connector comprises a bearing piece and a connector used as an insertion piece, wherein an optical fiber is arranged in the connector, the light emergent end face of the connector is an inclined plane, a wedge angle piece is arranged on one side of the bearing piece corresponding to the light emergent of the connector, the wedge angle piece is opposite to the end face of the connector, and the direction of the inclined angle is opposite. The wedge angle piece adopts proper materials and included angles, so that the refracted light emitted by the optical fiber inserting core can be corrected to be coaxial with the incident light. The invention also provides a collimator and a photoelectric detector which utilize the structure, and a ball lens or a photoelectric detection piece is arranged on the light-emitting side of the wedge angle piece in the outer casing pipe to form the collimator or the photoelectric detector.
Description
Technical Field
The invention belongs to the technical field of optical devices, and particularly relates to a structure for realizing optical coaxiality by using a wedge angle sheet and application thereof.
Background
In some plug-in or plug-in optical device applications, various optical fiber connectors and functional devices with adapters are required to be used as plug-in structures, so that various functional devices can be conveniently and quickly formed. In such applications, the optical fiber connectors are no longer connected to the same type of connector, but are often air media. Light passing through two media with different refractive indexes (such as optical fiber and air) generates Fresnel reflection, and the reflection causes the reduction of return loss, thereby having great influence on a front-end system.
Fig. 1, a prior art schematic. When a flat end face optical fiber connector (FC/UPC) is adopted as a pluggable or pluggable structure, the return loss is directly and greatly reduced by the vertical end face. To solve this problem, ramp connectors (e.g., FC/APC) are commonly used in the prior art. Although this approach increases the return loss, the outgoing light is deflected at an angle (into refracted light) at the end face, so that the light of the system is no longer coaxial. Fig. 2, a schematic diagram of a prior art solution. In order to make the light coaxial, in some designs, the connector is pre-angled so that the light exiting from the inclined plane is substantially horizontal, thereby making the light coaxial. In the solution of fig. 2, the ferrule b of the optical fiber ferrule a is formed to be inclined to form an angle with the housing c equal to the angle of refraction of light, thus correcting the outgoing light to be parallel to the housing c so as to be coaxial with the ball lens d. However, such design structure is complex, which increases the processing difficulty of the product.
In order to solve the above problems in the prior art, the present invention proposes a new structure for realizing optical coaxiality by using a wedge, and provides a specific application of the structure.
Disclosure of Invention
Fig. 3, a schematic diagram of the present invention. The emergent light of the optical fiber at the inclined surface connector has a refraction angle, a wedge angle sheet with opposite inclination angle directions is added in front of the emergent light, and the light can generate reverse refraction after entering the wedge angle sheet. In fig. 3a, the wedge angle piece is made of a material having the same refractive index as the optical fiber, so that the included angle of the wedge angle piece is opposite to the direction of the inclination angle of the end face of the connector, and the direction of light can be corrected to be horizontal and coaxial with the incident light of the optical fiber. In fig. 3b, the refractive index of the wedge sheet is different from that of the optical fiber, but the required included angle θ can be obtained by simple calculation based on the optical principle, and the direction of light can be corrected to be the horizontal direction and coaxial with the incident light of the optical fiber. The wedge angle pieces in the present invention include the above two types of wedge angle pieces, and are not particularly distinguished, and are also shown in the figures of the embodiments in the same manner as the shape of the wedge angle piece in fig. 3 a. Strictly speaking, the emergent light direction passing through the wedge angle sheet is the same as the incident light direction of the optical fiber, but a tiny parallel displacement which can be ignored in engineering exists, and the coaxial emergent light and the incident light is a reasonable approximate expression.
The specific technical scheme of the invention is as follows:
a structure for realizing light coaxiality by utilizing a wedge angle sheet. The connector comprises a bearing piece and a connector used as an insertion piece, wherein an optical fiber is arranged in the connector, the light emergent end face of the connector is an inclined plane, a wedge angle piece is arranged on one side of the bearing piece corresponding to the light emergent of the connector, the wedge angle piece is opposite to the end face of the connector, and the direction of the inclined angle is opposite.
Preferably, the connector is an optical fiber ferrule, the bearing member is a layer of sleeve, and the wedge angle piece is fixedly installed on the light emergent side of the sleeve corresponding to the optical fiber ferrule. We refer to this scheme as structure i.
In another preferred scheme, the connector is an optical fiber ferrule, the bearing piece is an inner sleeve and an outer sleeve (also called as a shell) which are coaxial, the optical fiber ferrule is inserted into the inner sleeve, and the wedge angle sheet is arranged in a space where the outer sleeve is longer than the inner sleeve. The light-emitting end face of the optical fiber ferrule is an inclined plane, and the wedge angle piece and the light-emitting end face of the optical fiber ferrule are opposite in inclination angle direction. We refer to this scheme as structure ii.
Preferably, one or more of the light-emitting surface of the optical fiber ferrule, the light-entering surface of the wedge angle sheet and the light-emitting surface of the wedge angle sheet is/are coated with an antireflection film to increase light transmission.
According to the principle, the wedge angle piece adopts proper materials and included angles, so that refracted light emitted by the optical fiber inserting core can be corrected to be coaxial with incident light.
The invention also provides two applications of the structure including the preferable structure in the optical functional part.
One is in the collimator.
The technical scheme of utilizing the structure I is as follows: an outer sleeve is additionally arranged on the structure I, and a collimator lens is arranged in the middle of the outer sleeve on the light emergent side of the wedge angle sheet to form a collimator. Structure I can be fixed to an organic whole piece in this scheme, the relative outer sleeve pipe plug of whole.
The technical scheme of utilizing the structure II is as follows: and a lens is arranged in the middle of the outer layer sleeve on the light emergent side of the wedge angle sheet in the structure II to form the collimator.
The other is applicable to a pluggable photoelectric detector.
The technical scheme of utilizing the structure I is as follows: an outer sleeve is additionally arranged on the structure I, and a photoelectric detection piece is arranged in the middle of the outer sleeve on the light emergent side of the wedge angle sheet to form the photoelectric detector. Structure I can be fixed to an organic whole piece in this scheme, the relative outer sleeve pipe plug of whole.
The technical scheme of utilizing the structure II is as follows: and an electric detecting piece is arranged in an outer layer sleeve on the light emergent side of the wedge angle sheet in the structure II to form a photoelectric detector.
In all technical schemes of the invention, the insertion core and the sleeve, and the inner layer sleeve and the outer layer sleeve can be movably connected in a pluggable manner or fixedly connected.
Drawings
FIG. 1 is a schematic diagram of the prior art;
FIG. 2 is a schematic diagram of a prior art solution;
FIG. 3 (including FIGS. 3a and 3b) is a schematic diagram of the principles of the present invention;
FIGS. 4 and 5 are schematic diagrams of a structure for realizing optical coaxiality by using a wedge;
FIGS. 6 and 7 are schematic diagrams of collimators for implementing light coaxiality by using the wedge-type wedge of the present invention;
fig. 8 and 9 are schematic diagrams of a photodetector using a structure for realizing optical alignment by using a wedge of the present invention.
In the figure: i-structure I, II-structure II, 1-optical fiber core insert, 2-wedge angle sheet, 3-sleeve, 3.1-inner layer sleeve, 3.2-outer layer sleeve, 4-optical fiber, 5-ball lens and 6-photoelectric detection piece.
Detailed Description
Fig. 4 and 5 show a structure of the present invention for realizing optical alignment by using a wedge.
As shown in fig. 4, structure i of the present invention. The wedge 2 is fixed on one side of the sleeve 3 in advance, and the optical fiber inserting core 1 containing the optical fiber 4 is inserted into the sleeve 3 from the other side of the sleeve 3 to a position close to but not contacting the wedge 2. The light-emitting end face of the optical fiber ferrule 1 is an inclined face, and the wedge angle piece 2 and the light-emitting end face of the optical fiber ferrule 1 are opposite in inclination angle direction. As described above, the wedge angle piece 2 can correct the refracted light emitted from the optical fiber ferrule to be coaxial with the incident light by using appropriate materials and included angles.
FIG. 5 shows structure II of the present invention. The sleeve consists of an inner sleeve 3.1 and an outer sleeve 3.2 which are coaxial, the optical fiber ferrule 1 is inserted in the inner sleeve 3.1, and the wedge angle piece 2 is arranged in a space of the outer sleeve 3.2 which is longer than the inner sleeve. The light-emitting end face of the optical fiber ferrule 1 is an inclined face, and the wedge angle piece 2 and the light-emitting end face of the optical fiber ferrule 1 are opposite in inclination angle direction.
Fig. 6 and 7 are diagrams illustrating a collimator in a structure for achieving optical alignment using a wedge according to the present invention.
The technical scheme shown in figure 6 is that a collimator is formed by utilizing a structure I, an outer sleeve 3.2 is additionally arranged outside the structure I, and a square ball lens 5 is arranged in the outer sleeve 3.2 on the light emergent side of a wedge angle sheet 2. Structure I can be fixed to an organic whole in this scheme, the whole relative outer sleeve pipe 3.2 plug.
The technical scheme shown in fig. 7 is that a collimator is formed by arranging a ball lens in an outer sleeve 3.2 on the light emergent side of a wedge angle sheet 2 by using a structure II.
Fig. 8 and 9 show a photodetector adopting a structure for realizing optical alignment by using a wedge of the present invention.
The technical scheme shown in fig. 8 is that a photoelectric detector is formed by utilizing a structure I, an outer sleeve 3.2 is additionally arranged outside the structure I, and a photoelectric detection piece 6 is arranged in the outer sleeve 3.2 at the light emergent side of a wedge angle sheet 2. Structure I can be fixed to an organic whole in this scheme, the whole relative outer sleeve pipe 3.2 plug.
In the technical scheme shown in fig. 7, a photoelectric detector is formed by arranging a photoelectric detection piece 6 in an outer casing 3.2 on the light emergent side of a wedge angle piece 2 by utilizing a structure II.
In the above embodiments, the ferrule and the sleeve, and the inner sleeve and the outer sleeve may be connected movably or fixedly. One or more surfaces of the light-emitting surface of the optical fiber ferrule, the light-in surface of the wedge angle sheet and the light-emitting surface are plated with antireflection films to increase light transmission.
Claims (10)
1. The utility model provides an utilize wedge angle piece to realize coaxial structure of light, includes the connector of accepting the piece and as the plug-in components connector, there is optic fibre at the connector center, its characterized in that: the light-emitting end face of the connector is an inclined face, and a wedge angle piece is arranged on one side, corresponding to the light-emitting end face of the connector, of the receiving piece, the wedge angle piece is opposite to the end face of the connector, and the direction of the inclined angle is opposite.
2. A structure for realizing optical coaxiality by using a wedge of claim 1, wherein: the connector is an optical fiber ferrule, the bearing piece is a sleeve, and the wedge angle piece is fixedly arranged in the sleeve and corresponds to the light emergent side of the optical fiber ferrule.
3. A structure for realizing optical coaxiality by using a wedge of claim 1, wherein: the connector is an optical fiber ferrule, the bearing piece is composed of an inner sleeve and an outer sleeve which are coaxial, the optical fiber ferrule is inserted into the inner sleeve, and the wedge angle sheet is arranged in a space where the outer sleeve is longer than the inner sleeve.
4. A structure for realizing optical coaxiality by using a wedge of claim 1, wherein: one or more surfaces of the light-emitting surface of the connector, the light-in surface of the wedge angle sheet and the light-emitting surface are plated with antireflection films.
5. A collimator, characterized by: in addition to the structure of claim 2 in which the light-coaxial is realized by the wedge plate, an outer sleeve is added, in which the light-emitting side of the wedge plate is provided with a lens.
6. A collimator, characterized by: the structure for realizing light coaxiality by using the wedge angle sheet as claimed in claim 3, wherein a lens is arranged on the light-emitting side of the wedge angle sheet in the outer sleeve.
7. A collimator according to claim 5 or 6, characterized in that: one or more surfaces of the light-emitting surface of the optical fiber ferrule, the light-in surface of the wedge angle sheet and the light-emitting surface are plated with antireflection films.
8. A photodetector characterized by: in addition to the structure of claim 2 in which the light-coaxial is realized by the wedge angle piece, an outer sleeve is added, and a photoelectric detection piece is installed on the light-emitting side of the wedge angle piece in the outer sleeve.
9. A photodetector, characterized by: the structure for realizing optical coaxiality by using the wedge angle sheet in the outer sleeve comprises the structure for realizing optical coaxiality by using the wedge angle sheet in claim 3, wherein a photoelectric detection piece is arranged on the light-emitting side of the wedge angle sheet in the outer sleeve.
10. A photodetector according to claim 8 or 9, characterized in that: one or more surfaces of the light-emitting surface of the optical fiber ferrule, the light-in surface of the wedge angle sheet and the light-emitting surface are plated with antireflection films.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010065112.0A CN111123443A (en) | 2020-01-20 | 2020-01-20 | Structure for realizing optical coaxiality by utilizing wedge angle sheet and application thereof |
| PCT/CN2021/072010 WO2021147774A1 (en) | 2020-01-20 | 2021-01-15 | Structure for using wedge to achieve optical coaxiality and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010065112.0A CN111123443A (en) | 2020-01-20 | 2020-01-20 | Structure for realizing optical coaxiality by utilizing wedge angle sheet and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111123443A true CN111123443A (en) | 2020-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010065112.0A Pending CN111123443A (en) | 2020-01-20 | 2020-01-20 | Structure for realizing optical coaxiality by utilizing wedge angle sheet and application thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111123443A (en) |
| WO (1) | WO2021147774A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112099144A (en) * | 2020-10-13 | 2020-12-18 | 中国科学院上海光学精密机械研究所 | Device and method for realizing alignment of optical fiber and quartz end cap |
| WO2021147774A1 (en) * | 2020-01-20 | 2021-07-29 | 嘉兴旭锐电子科技有限公司 | Structure for using wedge to achieve optical coaxiality and application thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1357779A (en) * | 2000-12-14 | 2002-07-10 | 福建华科光电有限公司 | Fiber collimator making process |
| US20020197020A1 (en) * | 2001-06-23 | 2002-12-26 | Charles Qian | Optical fiber collimator with long working distance and low insertion loss |
| CN203825233U (en) * | 2014-04-15 | 2014-09-10 | 福建华科光电有限公司 | Dual optical collimator with filtering film |
| CN206741030U (en) * | 2017-04-10 | 2017-12-12 | 中山市美速光电技术有限公司 | A kind of high return loss mechanical optical switch |
| CN109799605A (en) * | 2017-11-16 | 2019-05-24 | 福州高意通讯有限公司 | A kind of optical texture and application |
| CN211698280U (en) * | 2020-01-20 | 2020-10-16 | 嘉兴旭锐电子科技有限公司 | Structure for realizing light coaxiality by utilizing wedge angle sheet, collimator and photoelectric detector |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203643640U (en) * | 2013-12-20 | 2014-06-11 | 福州高意通讯有限公司 | Multi-optical-fiber head collimator |
| CN109307910A (en) * | 2018-12-05 | 2019-02-05 | 珠海市杰威光电科技有限公司 | A kind of online fibre optic isolater of microminiature |
| CN111123443A (en) * | 2020-01-20 | 2020-05-08 | 嘉兴旭锐电子科技有限公司 | Structure for realizing optical coaxiality by utilizing wedge angle sheet and application thereof |
-
2020
- 2020-01-20 CN CN202010065112.0A patent/CN111123443A/en active Pending
-
2021
- 2021-01-15 WO PCT/CN2021/072010 patent/WO2021147774A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1357779A (en) * | 2000-12-14 | 2002-07-10 | 福建华科光电有限公司 | Fiber collimator making process |
| US20020197020A1 (en) * | 2001-06-23 | 2002-12-26 | Charles Qian | Optical fiber collimator with long working distance and low insertion loss |
| CN203825233U (en) * | 2014-04-15 | 2014-09-10 | 福建华科光电有限公司 | Dual optical collimator with filtering film |
| CN206741030U (en) * | 2017-04-10 | 2017-12-12 | 中山市美速光电技术有限公司 | A kind of high return loss mechanical optical switch |
| CN109799605A (en) * | 2017-11-16 | 2019-05-24 | 福州高意通讯有限公司 | A kind of optical texture and application |
| CN211698280U (en) * | 2020-01-20 | 2020-10-16 | 嘉兴旭锐电子科技有限公司 | Structure for realizing light coaxiality by utilizing wedge angle sheet, collimator and photoelectric detector |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021147774A1 (en) * | 2020-01-20 | 2021-07-29 | 嘉兴旭锐电子科技有限公司 | Structure for using wedge to achieve optical coaxiality and application thereof |
| CN112099144A (en) * | 2020-10-13 | 2020-12-18 | 中国科学院上海光学精密机械研究所 | Device and method for realizing alignment of optical fiber and quartz end cap |
| CN112099144B (en) * | 2020-10-13 | 2022-10-11 | 中国科学院上海光学精密机械研究所 | Device and method for realizing alignment of optical fiber and quartz end cap |
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| Publication number | Publication date |
|---|---|
| WO2021147774A1 (en) | 2021-07-29 |
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