CN112099146A - Optical fiber collimation coupling system - Google Patents
Optical fiber collimation coupling system Download PDFInfo
- Publication number
- CN112099146A CN112099146A CN202010996792.8A CN202010996792A CN112099146A CN 112099146 A CN112099146 A CN 112099146A CN 202010996792 A CN202010996792 A CN 202010996792A CN 112099146 A CN112099146 A CN 112099146A
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- coupling
- incident beam
- collimating lens
- reflecting plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
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
- G02B6/262—Optical details of coupling light into, or out of, or between fibre ends, e.g. special fibre end shapes or associated optical elements
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The invention provides an optical fiber collimation coupling system, comprising: the plane reflector is arranged at a preset included angle with the incident beam and is used for reflecting the incident beam; the standard reflecting plate is arranged in the back-emitting direction of the plane reflecting mirror at a preset inclination angle and is used for uniformly scattering incident light beams incident to the surface of the standard reflecting plate to a 180-degree spatial solid angle; the optical fiber collimating lens connected with the optical fiber coupling jumper is arranged in the range of 180-degree spatial solid angle and is used for coupling the incident beam reflected by the standard reflecting plate into the optical fiber coupling jumper. The invention can reduce the alignment precision of the fiber collimating lens and the incident beam to 10 degrees, and realize the quick coupling of the incident beam and the fiber collimating lens.
Description
Technical Field
The invention relates to the technical field of optical fiber coupling, in particular to a high-tolerance rapid optical fiber collimation coupling system.
Background
In the laboratory test process of equipment such as a long-distance laser ranging system, a laser radar and the like, the important step is that a high-energy laser emission beam is coupled into an optical fiber through an optical fiber collimating lens after being attenuated by an energy attenuator, and the ranging capability verification is completed after being delayed and attenuated by a long-distance optical fiber. The traditional optical fiber coupling system is shown in fig. 1 and comprises an energy attenuator 7 and an optical fiber collimating lens 9 with an optical fiber coupling jumper wire 10, wherein the optical fiber collimating lens 9 is aligned with the energy attenuator 7, high-energy laser 8 is attenuated by the energy attenuator 7 and then coupled into the optical fiber coupling jumper wire 10, in the process, the angle and the position of the optical fiber collimating lens 9 need to be accurately adjusted by means of a six-dimensional adjusting frame, the alignment precision is required to be more than 0.2 degrees, the alignment process consumes time and labor, and the requirement of rapid detection is difficult to meet.
Disclosure of Invention
The invention aims to solve the problem that the traditional optical fiber coupling system has high alignment precision requirement on an incident beam and an optical fiber collimating lens, and provides an optical fiber collimating coupling system without precise alignment, which mainly aims to reduce the alignment precision of the optical fiber collimating lens and the incident beam, reduces the alignment precision requirement to 10 degrees, and realizes the rapid coupling of the incident beam and the optical fiber collimating lens.
In order to achieve the purpose, the invention adopts the following specific technical scheme:
the invention provides an optical fiber collimation coupling system, comprising: the plane reflector is arranged at a preset included angle with the incident beam and is used for reflecting the incident beam; the standard reflecting plate is arranged in the back-emitting direction of the plane reflecting mirror at a preset inclination angle and is used for uniformly scattering incident light beams incident to the surface of the standard reflecting plate to a 180-degree spatial solid angle; the optical fiber collimating lens connected with the optical fiber coupling jumper is arranged in the range of 180-degree spatial solid angle and is used for coupling the incident beam reflected by the standard reflecting plate into the optical fiber coupling jumper.
Compared with the traditional optical fiber coupling system, the invention has the beneficial effects that:
1. the requirement of alignment precision is reduced to 10 degrees, compared with the requirement of alignment precision of a traditional optical fiber coupling system, the requirement of alignment precision is reduced by more than 50 times, and the rapid coupling of incident beams and an optical fiber collimating lens is realized.
2. The coupling energy output uniformity is less along with the angle and position change of the fiber collimating lens.
3. The optical fiber collimation coupling system has the advantages of simple structure, easiness in alignment, rapidness, high efficiency and the like.
4. The laser attenuation step and device in the high-energy laser fiber coupling process are omitted, the cost can be reduced, and the coupling efficiency can be improved.
5. The uniformity of the coupled output energy of the optical fiber is better in a larger angle range.
Drawings
FIG. 1 is a schematic diagram of a conventional fiber coupling system;
fig. 2 is a schematic structural diagram of a fiber collimating and coupling system according to an embodiment of the present invention.
Wherein the reference numerals include: the device comprises a plane reflector 1, a standard reflecting plate 2, an optical fiber collimating lens 3, an optical fiber coupling jumper 4, an incident beam 5, uniformly reflected light 6, an energy attenuator 7, an incident beam 8, an optical fiber collimating lens 9 and an optical fiber coupling jumper 10.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention.
The fiber collimating and coupling system provided by the embodiment of the invention will be described in detail below.
Fig. 1 shows a structure of a fiber collimating and coupling system according to an embodiment of the present invention.
As shown in fig. 1, an optical fiber collimating and coupling system provided by an embodiment of the present invention includes: the device comprises a plane reflector 1, a standard reflecting plate 2, an optical fiber collimating lens 3 and an optical fiber coupling jumper 4; the plane mirror 1 is arranged in the incident direction of the incident beam 5 at a predetermined included angle, that is, the plane mirror 1 and the incident beam 5 are arranged at a predetermined included angle to reflect the incident beam 5; the standard reflecting plate 2 is arranged in the reflecting direction of the plane reflecting mirror 1 and is used for uniformly scattering incident beams incident to the surface of the standard reflecting plate 2 to a 180-degree spatial solid angle; the optical fiber collimating lens 3 is arranged in a 180-degree spatial solid angle range, the optical fiber coupling jumper 4 is connected with the optical fiber collimating lens 3, and the optical fiber collimating lens 3 couples the incident light beam 5 into the optical fiber coupling jumper 4.
The purpose of placing the plane mirror 1 and the incident light beam 5 at a predetermined included angle is to prevent the plane mirror 1 from being perpendicular to the incident light beam 5, and if the incident angle of the plane mirror 1 is 0 °, the incident light beam 5 will return along the original path of the light direction, so that the plane mirror 1 and the incident light beam 5 need to form a certain included angle, but the included angle cannot be 90 °.
The standard reflecting plate 2 is a diffuse reflecting plate, and can perform diffuse reflection on the light beam incident to the standard reflecting plate 2, so that the light beam is uniformly reflected along each direction to form uniformly reflected light 6, thereby achieving the scattering effect, and the scattering range of the uniformly reflected light 6 is a spatial solid angle of 180 degrees.
Because the reflected light after the diffuse reflection of the standard reflecting plate 2 is relatively uniform, the output uniformity of the coupling energy is relatively small along with the change of the angle and the position of the optical fiber collimating lens.
The standard reflecting plate 2 is arranged in the back-reflecting direction of the plane mirror 1 at a preset inclination angle, so that the light beam reflected by the plane mirror 1 can be completely irradiated on the standard reflecting plate 2.
The relative position relationship between the plane mirror 1 and the standard reflecting plate 2 can be adjusted, the backscattering energy of the incident beam 5 entering the plane mirror 1 can be effectively restrained, and the influence on other optical systems in the direction of the incident beam 5 is reduced.
The optical fiber collimating lens 3 is located in the scattering range of the standard reflecting plate 2, namely, in the range of 180-degree spatial solid angle, the optical fiber collimating lens 3 couples the reflected light of the standard reflecting plate 2 into the optical fiber coupling jumper 4, and the position and the angle of the optical fiber collimating lens 3 can be adjusted within a certain range according to the direction of the incident light beam 5.
The standard reflecting plate 2 and the optical fiber coupling jumper wire 4 can select standard reflecting plates with different reflectivity parameters and structural size parameters and optical fiber coupling jumper wires with different modes according to actual application requirements.
As the coupling of the incident beam 5 can be realized as long as the fiber collimating lens 3 is within the scattering range of the standard reflecting plate 2, the standard reflecting plate 2 increases the alignment angle of the fiber collimating lens 3 and reduces the alignment precision, the alignment precision of the fiber collimating coupling system provided by the invention is far smaller than that of the traditional fiber coupling system, the alignment precision requirement can be reduced to 10 degrees, and the alignment precision requirement is reduced by more than 50 times compared with the traditional alignment precision requirement.
Because the angle and the position of the fiber collimating lens 3 are accurately adjusted without using a six-dimensional adjusting frame, the fiber collimating coupling system provided by the invention can realize the quick coupling of the incident beam 5 and the fiber collimating lens 3, has high butt joint speed and high efficiency, and can save the cost of the coupling system.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
The above embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.
Claims (1)
1. A fiber alignment coupling system, comprising:
the plane reflector is arranged at a preset included angle with the incident beam and is used for reflecting the incident beam;
the standard reflecting plate is arranged in the reflecting direction of the plane reflecting mirror at a preset inclination angle and is used for uniformly scattering incident light beams incident to the surface of the standard reflecting plate to a 180-degree spatial solid angle;
and the optical fiber collimating lens is connected with an optical fiber coupling jumper wire, is arranged in the range of the 180-degree spatial solid angle, and is used for coupling the incident beam reflected by the standard reflecting plate into the optical fiber coupling jumper wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010996792.8A CN112099146A (en) | 2020-09-21 | 2020-09-21 | Optical fiber collimation coupling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010996792.8A CN112099146A (en) | 2020-09-21 | 2020-09-21 | Optical fiber collimation coupling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112099146A true CN112099146A (en) | 2020-12-18 |
Family
ID=73754692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010996792.8A Pending CN112099146A (en) | 2020-09-21 | 2020-09-21 | Optical fiber collimation coupling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112099146A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020145730A1 (en) * | 2001-04-04 | 2002-10-10 | Agilent Technologies, Inc. | Scattering attenuator |
| US20030118282A1 (en) * | 2001-12-21 | 2003-06-26 | Tatum Jimmy A. | Optical coupling for optical fibers |
| CN201247048Y (en) * | 2008-07-24 | 2009-05-27 | 天津港东科技发展股份有限公司 | Thickness meter for optical film |
| CN105466667A (en) * | 2015-12-16 | 2016-04-06 | 中国科学院长春光学精密机械与物理研究所 | Method for measuring large power CO2 laser divergence angle |
| CN106644407A (en) * | 2016-12-13 | 2017-05-10 | 西南技术物理研究所 | Laser-induced plasma ignition time measurement device |
| CN108007677A (en) * | 2017-12-27 | 2018-05-08 | 杭州远方光电信息股份有限公司 | A kind of laser projection speckle measurement system |
| CN109738064A (en) * | 2019-01-11 | 2019-05-10 | 厦门盈趣科技股份有限公司 | The pulse power measurement of pulse laser |
-
2020
- 2020-09-21 CN CN202010996792.8A patent/CN112099146A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020145730A1 (en) * | 2001-04-04 | 2002-10-10 | Agilent Technologies, Inc. | Scattering attenuator |
| US20030118282A1 (en) * | 2001-12-21 | 2003-06-26 | Tatum Jimmy A. | Optical coupling for optical fibers |
| CN201247048Y (en) * | 2008-07-24 | 2009-05-27 | 天津港东科技发展股份有限公司 | Thickness meter for optical film |
| CN105466667A (en) * | 2015-12-16 | 2016-04-06 | 中国科学院长春光学精密机械与物理研究所 | Method for measuring large power CO2 laser divergence angle |
| CN106644407A (en) * | 2016-12-13 | 2017-05-10 | 西南技术物理研究所 | Laser-induced plasma ignition time measurement device |
| CN108007677A (en) * | 2017-12-27 | 2018-05-08 | 杭州远方光电信息股份有限公司 | A kind of laser projection speckle measurement system |
| CN109738064A (en) * | 2019-01-11 | 2019-05-10 | 厦门盈趣科技股份有限公司 | The pulse power measurement of pulse laser |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN214795200U (en) | Window for laser radar and laser radar | |
| US9110154B1 (en) | Portable programmable ladar test target | |
| KR101842421B1 (en) | Device for applying laser radiation and device for reproducing a linear light distribution | |
| CN100501477C (en) | Optical tap module | |
| CN109001747B (en) | Non-blind area laser radar system | |
| US20200292671A1 (en) | Laser radar system | |
| CN104977725A (en) | Optical system for photoelectric pod | |
| CN102721826A (en) | Speed testing device and method of non-spliced large-target surface laser light screen | |
| CN106383354A (en) | Coaxial device without blind area | |
| CN111896937B (en) | Optical module for light beam superposition and laser system | |
| CN110346038A (en) | A kind of laser beam separator and method | |
| CN116224298A (en) | Lidar and mobile device | |
| CN112436371A (en) | Large-magnification and magnification continuously adjustable laser attenuator | |
| CN206450829U (en) | A kind of non-blind area coaxial device and infrared distance measuring device | |
| CN208399756U (en) | Laser splitting device | |
| CN112099146A (en) | Optical fiber collimation coupling system | |
| CN110989060A (en) | Light trap for absorbing and inhibiting laser stray light | |
| CN201037880Y (en) | Laser attenuator | |
| CN105572867A (en) | Method of using double-wedge plate and standard cube-corner prism to realize reflected light beam deflection | |
| GB1572148A (en) | Passive optical range simulator device | |
| CN108519591A (en) | A kind of laser ranging light beam is directed toward the device of real-time high-precision monitoring | |
| CN113161849B (en) | Chromatographic synthesis device and method insensitive to relative error of laser beam incident angle | |
| CN210347922U (en) | Laser radar device | |
| CN110266379A (en) | A kind of backlight monitoring optical assembly | |
| CN216958847U (en) | Optical path system of laser and laser |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201218 |