CN103235389B - Optical fiber coupling-based optical fiber rotating collimator and coaxial debugging method for mechanical axis and optical axis of optical fiber rotating collimator - Google Patents
Optical fiber coupling-based optical fiber rotating collimator and coaxial debugging method for mechanical axis and optical axis of optical fiber rotating collimator Download PDFInfo
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- CN103235389B CN103235389B CN201310158630.7A CN201310158630A CN103235389B CN 103235389 B CN103235389 B CN 103235389B CN 201310158630 A CN201310158630 A CN 201310158630A CN 103235389 B CN103235389 B CN 103235389B
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Abstract
The invention discloses an optical fiber coupling-based optical fiber rotating collimator and a coaxial debugging method for a mechanical axis and an optical axis of the optical fiber rotating collimator. The invention belongs to the field of optical fiber sensing. When coaxial debugging is performed on the mechanical axis and the optical axis of a traditional optical fiber rotating collimator, a plane mirror needs to be fixedly arranged on rotating equipment, and meanwhile, by means of an external light source, the debugging difficulty of a coaxial self-alignment method for the optical axis and the mechanical axis is high. The coaxial debugging method for the mechanical axis and the optical axis of the optical fiber rotating collimator disclosed by the invention comprises the following steps of installing a plane mirror in the laser exit direction of the optical fiber collimator; regulating the plane mirror until the power of an optical signal received by an optical power meter is maximum; rotating a moving part of a mechanical rotating machine for 180 degrees; regulating the plane mirror until the power of a laser signal received by the optical power meter is maximum; reversely regulating the azimuth angle and the pitch angle of the plane mirror until the mechanical axis of the rotating collimator is vertical to the plane mirror; and then, regulating a swivel bolt to enable the optical axis of the optical fiber collimator to be overlapped with the mechanical axis to complete the coaxial debugging of the mechanical axis and the optical axis. The optical fiber coupling-based optical fiber rotating collimator and the coaxial debugging method for the mechanical axis and the optical axis of the optical fiber rotating collimator disclosed by the invention are suitable for the field of optical fiber communications.
Description
Technical field
The invention belongs to sensory field of optic fibre, be specifically related to mechanical axis and the light shaft coaxle adjustment method of optical fiber collimator.
Background technology
Optical fiber collimator is the optical fibre device that development in recent years is got up, and its effect collimates the light of fiber exit, and reduce the angle of divergence of light beam, the light beam launched by optical fiber collimator is about 0.25 degree.When optical fiber sensing technology is applied on slewing, slewing can not be followed due to testing apparatus and rotate together, therefore need the noncontact optical transport realized between optical fiber and optical fiber.In order to reduce noncontact optical transmission loss, need to use the light of optical fiber collimator to fiber exit to collimate.An optical fiber collimator is fixed on slewing, composition fiber spinning collimating apparatus.Noncontact optical transmission loss between optical fiber collimator to optical fiber collimator depends on the size of fiber spinning collimating apparatus optical axis and mechanical axis angle, and angle is larger, and loss is larger, therefore needs the optical axis of fiber spinning collimating apparatus and mechanical axis to be adjusted to coaxial.The method of debugging optical axis coaxial with mechanical axis can use autocollimatic method usually, the method needs adjustable plane mirror to be fixed on slewing, and need by external light source by plane mirror and rotating machinery shaft Uprightness adjusting, because this increasing debugging difficulty.
Summary of the invention
The present invention carries out when optical axis and mechanical axis are coaxially debugged needing plane mirror to be fixed on slewing simultaneously by external light source to solve existing fiber collimating apparatus, result in the problem that optical axis is large with the coaxial autocollimatic method debugging difficulty of mechanical axis, propose the coaxial adjustment method of fiber spinning collimating apparatus based on coupling fiber and mechanical axis and optical axis.
Based on the fiber spinning collimating apparatus of coupling fiber, the described fiber spinning collimating apparatus based on coupling fiber comprises light power meter, laser instrument, optical fiber, No. two optical fiber, photo-coupler, No. three optical fiber, mechanical rotary device, two groups of adjusting bolts and optical fiber collimators;
The laser signal output terminal of described laser instrument connects one end of an optical fiber, the other end of an optical fiber connects the laser signal input end of photo-coupler, the laser signal input end of described light power meter connects one end of No. two optical fiber, the other end of No. two optical fiber connects a laser signal output terminal of photo-coupler, the laser signal input/output terminal of described photo-coupler connects one end of No. three optical fiber, mechanical rotary device comprises bearing and rotating head, described bearing comprises fixed part and movable part, described rotating head is cylindrical shape, this rotating head is positioned at bearing side vertically, and this rotating head and coaxial bearing are arranged, one end of this rotating head is fixedly connected with the movable part of bearing, barrel on described rotating head is arranged two groups of adjusting bolts, often organize adjusting bolt and comprise four adjusting bolts, the axis of these four adjusting bolts is positioned at same plane and intersects at the axis of bearing, the axis angle of any two adjacent adjusting bolts is 90 degree, the spiro rod length of every root adjusting bolt is equal to the radius of rotating head, described optical fiber collimator is embedded in rotating head, and fixed by two groups of adjusting bolts, optical fiber collimator is coaxial with rotating head, the other end of No. three optical fiber is connected with one end of optical fiber collimator with rotating head through bearing.
According to mechanical axis and the light shaft coaxle adjustment method of the above-mentioned fiber spinning collimating apparatus based on coupling fiber, the concrete steps of the method are:
Step one, laser emitting direction at optical fiber collimator, distance optical fiber collimator L place arranges a plane mirror, wherein, 1mm≤L≤5mm, opens laser instrument, rotates rotating head, in rotary course, detect light power meter and whether receive light signal, when light signal being detected, stop the rotation rotating head;
Step 2, regulate the position angle of plane mirror and the angle of pitch until the power of laser signal that receives of light power meter is maximum, stop regulating plane mirror, now the optical axis of optical fiber collimator is vertical with plane mirror, records the luminous power P that now light power meter receives
max, and record azimuth angle alpha 1 and the angle of pitch β 1 of now plane mirror;
Step 3, rotate rotating head 180 degree, regulate the position angle of plane mirror and the angle of pitch until the power of laser signal that receives of light power meter is maximum, stop regulating plane mirror, now the optical axis of optical fiber collimator is again vertical with plane mirror; Record azimuth angle alpha 2 and the angle of pitch β 2 of now plane mirror;
Step 4, relatively step 3 regulate the position angle (α 2-α 1)/2 of the reverse adjustment plane mirror of level crossing azimuth direction, relative step 3 regulates the angle of pitch (β 2-β 1)/2 of the reverse adjustment plane mirror in level crossing angle of pitch direction, and now the mechanical axis of optical fiber collimator is vertical with plane mirror;
Step 5, regulate any one group of adjusting bolt until the performance number of laser signal that light power meter receives is P
max, stop regulating, complete the debugging of mechanical axis and light shaft coaxle.
Fiber spinning collimating apparatus based on coupling fiber of the present invention is when carrying out the debugging of mechanical axis and light shaft coaxle without the need to additional light source, and using planar catoptron coordinates with light power meter and can realize the debugging of mechanical axis and light shaft coaxle.
The mechanical axis of the fiber spinning collimating apparatus based on coupling fiber of the present invention compared with existing autocollimatic method, reduces the mechanical axis of optical fiber collimator and the debugging difficulty of light shaft coaxle with light shaft coaxle adjustment method.
Accompanying drawing explanation
Fig. 1 be the optical axis of the fiber spinning collimating apparatus based on coupling fiber described in embodiment two step 2 vertical with plane mirror time, based on the structural representation of the fiber spinning collimating apparatus of coupling fiber, in figure, dotted line represents the mechanical axis of optical fiber collimator, and solid line represents the optical axis of optical fiber collimator;
Fig. 2 be optical axis and the plane mirror of the fiber spinning collimating apparatus based on coupling fiber described in embodiment two step 3 time vertical time, based on the fiber spinning collimator structure schematic diagram of coupling fiber, in figure, dotted line represents the mechanical axis of optical fiber collimator, and solid line represents the optical axis of optical fiber collimator;
Fig. 3 is that the mechanical axis of the fiber spinning collimating apparatus based on coupling fiber described in embodiment two step 4 is perpendicular to plane mirror, based on the structural representation of the fiber spinning collimating apparatus of coupling fiber, in figure, dotted line represents the mechanical axis of optical fiber collimator, and solid line represents the optical axis of optical fiber collimator.
Embodiment
Embodiment one: the fiber spinning collimating apparatus based on coupling fiber described in present embodiment, the described fiber spinning collimating apparatus based on coupling fiber comprises light power meter 1, laser instrument 2, optical fiber 3, No. two optical fiber 4, photo-coupler 5, No. three optical fiber 6, mechanical rotary device 7, two groups of adjusting bolts 8 and optical fiber collimator 9;
The laser signal output terminal of described laser instrument 2 connects one end of an optical fiber 3, the other end of an optical fiber 3 connects the laser signal input end of photo-coupler 5, the laser signal input end of described light power meter 1 connects one end of No. two optical fiber 4, the other end of No. two optical fiber 4 connects a laser signal output terminal of photo-coupler 5, the laser signal input/output terminal of described photo-coupler 5 connects one end of No. three optical fiber 6, described mechanical rotary device 7 comprises bearing and rotating head 7-3, described bearing comprises fixed part 7-1 and movable part 7-2, described rotating head 7-3 is cylindrical shape, this rotating head 7-3 is positioned at bearing side vertically, and this rotating head 7-3 and coaxial bearing are arranged, one end of this rotating head 7-3 is fixedly connected with the movable part 7-2 of bearing, barrel on described rotating head 7-3 is arranged two groups of adjusting bolts, often organize adjusting bolt 8 and comprise four adjusting bolts, the axis of these four adjusting bolts is positioned at same plane and intersects at the axis of bearing, the axis angle of any two adjacent adjusting bolts is 90 degree, the spiro rod length of every root adjusting bolt is equal to the radius of rotating head, described optical fiber collimator 9 is embedded in rotating head, and fixed by two groups of adjusting bolts 8, optical fiber collimator 9 is coaxial with rotating head, the other end of No. three optical fiber 6 is connected with one end of optical fiber collimator 9 with rotating head 7-3 through bearing.
Concrete enforcement embodiment two: present embodiment is further illustrating the fiber spinning collimating apparatus based on coupling fiber described in embodiment one, laser instrument 2 adopts model to be the laser instrument of DFB-1550.
Concrete enforcement embodiment three: present embodiment is further illustrating the fiber spinning collimating apparatus based on coupling fiber described in embodiment one, light power meter 1 adopts model to be the light power meter of AQ2211.
Embodiment four: present embodiment is described below in conjunction with Fig. 1, Fig. 2, Fig. 3, present embodiment is mechanical axis and the light shaft coaxle adjustment method of the fiber spinning collimating apparatus based on coupling fiber described in embodiment one, and the concrete steps of the method are:
Step one, laser emitting direction at optical fiber collimator, distance optical fiber collimator L place arranges a plane mirror, wherein, 1mm≤L≤5mm, opens laser instrument 2, rotates rotating head 7-3, in rotary course, detect light power meter and whether receive light signal, when light signal being detected, stop the rotation rotating head;
Step 2, regulate the position angle of plane mirror and the angle of pitch until the power of laser signal that receives of light power meter is maximum, stop regulating plane mirror, now the optical axis of optical fiber collimator 9 is vertical with plane mirror, records the luminous power P that now light power meter receives
max, and record azimuth angle alpha 1 and the angle of pitch β 1 of now plane mirror;
Step 3, rotate rotating head 180 degree, regulate the position angle of plane mirror and the angle of pitch until the power of laser signal that receives of light power meter is maximum, stop regulating plane mirror, now the optical axis of optical fiber collimator 9 is again vertical with plane mirror; Record azimuth angle alpha 2 and the angle of pitch β 2 of now plane mirror;
Step 4, relatively step 3 regulate the position angle (α 2-α 1)/2 of the reverse adjustment plane mirror of level crossing azimuth direction, relative step 3 regulates the angle of pitch (β 2-β 1)/2 of the reverse adjustment plane mirror in level crossing angle of pitch direction, and now the mechanical axis of optical fiber collimator is vertical with plane mirror;
Step 5, regulate any one group of adjusting bolt 8 until the performance number of laser signal that light power meter 1 receives is P
max, stop regulating, complete the debugging of mechanical axis and light shaft coaxle.
Claims (4)
1. based on the fiber spinning collimating apparatus of coupling fiber, it is characterized in that, the described fiber spinning collimating apparatus based on coupling fiber comprises light power meter (1), laser instrument (2), optical fiber (3), No. two optical fiber (4), photo-coupler (5), No. three optical fiber (6), mechanical rotary device (7), two groups of adjusting bolts (8) and optical fiber collimators (9);
The laser signal output terminal of described laser instrument (2) connects one end of an optical fiber (3), the other end of an optical fiber (3) connects the laser signal input end of photo-coupler (5), the laser signal input end of described light power meter (1) connects one end of No. two optical fiber (4), the other end of No. two optical fiber (4) connects a laser signal output terminal of photo-coupler (5), the laser signal input/output terminal of described photo-coupler (5) connects one end of No. three optical fiber (6), described mechanical rotary device (7) comprises bearing and rotating head (7-3), described bearing comprises fixed part (7-1) and movable part (7-2), described rotating head (7-3) is cylindrical shape, this rotating head (7-3) is positioned at bearing side vertically, and this rotating head (7-3) and coaxial bearing are arranged, one end of this rotating head (7-3) is fixedly connected with the movable part (7-2) of bearing, barrel on described rotating head (7-3) is arranged two groups of adjusting bolts, often organize adjusting bolt (8) and comprise four adjusting bolts, the axis of these four adjusting bolts is positioned at same plane and intersects at the axis of bearing, the axis angle of any two adjacent adjusting bolts is 90 degree, the spiro rod length of every root adjusting bolt is equal to the radius of rotating head, described optical fiber collimator (9) is embedded in rotating head, and fixed by two groups of adjusting bolts (8), optical fiber collimator (9) is coaxial with rotating head, the other end of No. three optical fiber (6) is connected with rotating head (7-3) one end with optical fiber collimator (9) through bearing.
2. the fiber spinning collimating apparatus based on coupling fiber according to claim 1, is characterized in that, laser instrument (2) adopts model to be the laser instrument of DFB-1550.
3. the fiber spinning collimating apparatus based on coupling fiber according to claim 1, is characterized in that, light power meter (1) adopts model to be the light power meter of AQ2211.
4., according to claim 1 based on mechanical axis and the light shaft coaxle adjustment method of the fiber spinning collimating apparatus of coupling fiber, it is characterized in that, the concrete steps of the method are:
Step one, laser emitting direction at optical fiber collimator, distance optical fiber collimator L place arranges a plane mirror, wherein, 1mm≤L≤5mm, opens laser instrument (2), rotates rotating head (7-3), in rotary course, detect light power meter and whether receive light signal, when light signal being detected, stop the rotation rotating head;
Step 2, regulate the position angle of plane mirror and the angle of pitch until the power of laser signal that receives of light power meter is maximum, stop regulating plane mirror, now the optical axis of optical fiber collimator (9) is vertical with plane mirror, records the luminous power P that now light power meter receives
max, and record azimuth angle alpha 1 and the angle of pitch β 1 of now plane mirror;
Step 3, rotation rotating head 180 degree, regulate the position angle of plane mirror and the angle of pitch until the power of laser signal that receives of light power meter is maximum, stop regulating plane mirror, now the optical axis of optical fiber collimator (9) is again vertical with plane mirror; Record azimuth angle alpha 2 and the angle of pitch β 2 of now plane mirror;
Step 4, relatively step 3 regulate the position angle (α 2-α 1)/2 of the reverse adjustment plane mirror of level crossing azimuth direction, relative step 3 regulates the angle of pitch (β 2-β 1)/2 of the reverse adjustment plane mirror in level crossing angle of pitch direction, and now the mechanical axis of optical fiber collimator is vertical with plane mirror;
Step 5, regulate any one group of adjusting bolt (8) until the performance number of laser signal that light power meter (1) receives is P
max, stop regulating, complete the debugging of mechanical axis and light shaft coaxle.
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| CN201310158630.7A CN103235389B (en) | 2013-05-02 | 2013-05-02 | Optical fiber coupling-based optical fiber rotating collimator and coaxial debugging method for mechanical axis and optical axis of optical fiber rotating collimator |
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| CN201310158630.7A CN103235389B (en) | 2013-05-02 | 2013-05-02 | Optical fiber coupling-based optical fiber rotating collimator and coaxial debugging method for mechanical axis and optical axis of optical fiber rotating collimator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2016049798A1 (en) * | 2014-09-29 | 2016-04-07 | 华为技术有限公司 | Optical fiber coupling system and method |
| CN104985331B (en) * | 2015-07-10 | 2017-02-01 | 李欣岳 | Optical axis calibration method for laser cutting equipment |
| CN105750928B (en) * | 2016-04-01 | 2017-11-21 | 哈尔滨工程大学 | A kind of mechanical structure realized optical fiber and rotated along axle center |
| CN106291863B (en) * | 2016-08-30 | 2019-03-01 | 中国电子科技集团公司第八研究所 | Dove prism installation and debugging method for fiber rotation connector |
| CN107504921B (en) * | 2017-07-04 | 2019-09-06 | 大族激光科技产业集团股份有限公司 | Measuring device |
| CN108873179A (en) * | 2018-07-09 | 2018-11-23 | 南京华脉科技股份有限公司 | A kind of adjustment method of silicon substrate coarse wavelength division multiplexing device assembly |
| CN113029572A (en) * | 2021-01-20 | 2021-06-25 | 中国船舶重工集团公司第七一一研究所 | Automatic centering system, engine test bed system and centering method |
| CN113376857B (en) * | 2021-06-08 | 2023-05-05 | 福州市纳飞光电科技有限公司 | High-precision optical path debugging device and method |
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| US5659645A (en) * | 1994-05-13 | 1997-08-19 | Mitsubishi Cable Industries, Ltd. | Collimator with adjusting mechanism for improved alignment between optical fiber and lens |
| CN1165961A (en) * | 1995-10-31 | 1997-11-26 | 富士通株式会社 | Optical device having optical film with incident angle thereupon variable |
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Inventor after: Yang Yuqiang Inventor after: Fu Shiyun Inventor after: Cao Guiyuan Inventor after: Zhao Hong Inventor after: Shan Shan Inventor after: Liu Ming Inventor after: Hu Xiaoying Inventor after: Xin Danlu Inventor after: Sun Feifei Inventor before: Yang Yuqiang Inventor before: Cao Guiyuan Inventor before: Zhao Hong Inventor before: Sun Feifei |
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Free format text: CORRECT: INVENTOR; FROM: YANG YUQIANG CAO GUIYUAN ZHAO HONG SUN FEIFEI TO: YANG YUQIANG FU SHIYUN CAO GUIYUAN ZHAO HONG SHAN SHAN LIU MING HU XIAOYING XIN DANLU SUN FEIFEI |
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