CN2442282Y - Auxiliary regulator for real time viewing optical fiber coupling - Google Patents
Auxiliary regulator for real time viewing optical fiber coupling Download PDFInfo
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- CN2442282Y CN2442282Y CN 00249352 CN00249352U CN2442282Y CN 2442282 Y CN2442282 Y CN 2442282Y CN 00249352 CN00249352 CN 00249352 CN 00249352 U CN00249352 U CN 00249352U CN 2442282 Y CN2442282 Y CN 2442282Y
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- optical fiber
- adjustable diaphragm
- optics
- attenuator
- polarization beam
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Abstract
The utility model relates to an auxiliary regulator for viewing optical fiber coupling in real time. A laser beam for regulating the transmission of a laser can be accurately coupled into an optical fiber coupler. The auxiliary regulator mainly comprises an optical regulating table; a first adjustable diaphragm and a second adjustable diaphragm are respectively arranged at both ends of the optical regulating table; a damping piece inserting slot is arranged on the optical regulating table between the two diaphragms. A polarization beam splitting prism is arranged between the damping piece inserting slot and the second adjustable diaphragm. A viewing device is arranged right above the polarization beam splitting prism. An expansion light source is arranged at the position facing to the output end of an optical fiber. The utility model has the advantages of simple structure and shortened regulating time.
Description
The utility model is a kind of auxiliary conditioning unit of Real Time Observation optical fiber coupling.
The light beam coupling of launching in the laser instrument has a wide range of applications in optical fiber.Single mode/polarization maintaining optical fibre core diameter commonly used is superfine; be generally less than 9 μ m; have little to 1 μ m's; and commercially available single mode/polarization maintaining optical fibre generally all has protective casing or armouring; and the optical fiber both ends of the surface are all through handling; there is porcelain bushing shell the outside, and coupled lens is that plug-in type is connected with optical fiber head, and it is outer to be stainless steel sleeve etc.
The laser beam that sends from laser instrument directly through generally greater than 1mm, focus on the laggard optical fiber of going into through coupled lens.Because single mode/polarization maintaining optical fibre core diameter is tiny, it is very difficult to make focusing back hot spot aim at fibre core, requires very high again to the precision of regulating simultaneously.The φ 4.5 μ m single-mode fibers that use with reality are example, when the coupled lens focal length is 11mm, and beam angle deviation 4.10
-4Radian will make hot spot drop on outside the fiber cores fully.Existing various optical-fibre precise adjusting bracket all can reach the degree of regulation of microradian magnitude, but how Real Time Observation is regulated situation in adjustment process, is a thorny thing, for plug-type optical fiber one Lens Coupling device, this difficulty is particularly outstanding, because can't observe from the side.
Known a kind of coupling device is coupled into the bigger multimode optical fiber of core diameter with laser beam earlier, dials down multimode optical fiber then, changes slotting single-mode fiber and regulates.Its required adjusting time is longer, and needs operating personnel that suitable masterful technique is arranged, otherwise may destroy original adjustment result in changing the process of inserting.
The purpose of this utility model can not be observed the adjustment process situation for overcoming in the above-mentioned prior art, and a kind of auxiliary conditioning unit of Real Time Observation optical fiber coupling is provided.The Real Time Observation light beam is entered the situation of optical fiber coupling, can be exactly with light beam coupling in tiny optical fiber.
Auxiliary conditioning unit of the present utility model as shown in Figure 1.Auxiliary conditioning unit of the present utility model mainly contains optics adjusts platform 6, the two ends of adjusting on the platform 6 at optics are equipped with first adjustable diaphragm 2 and second adjustable diaphragm 7 respectively, on the adjustment of the optics between first adjustable diaphragm 2 and second adjustable diaphragm 7 platform 6, be equipped with for the attenuator slot 4 that inserts attenuator 13, adjust the line of centres O that is equipped with 5, two adjustable diaphragms of polarization beam splitter prism 2,7 on the platform 6 at the optics between the attenuator slot 4 and second adjustable diaphragm 7
2O
2Pass the live part of attenuator 13 and polarization beam splitter prism 5, directly over polarization beam splitter prism 5, be equipped with and observe device 3, be equipped with expansion light source 12 facing to the fiber-optic output 10 that is clipped on the second optical fiber adjusting bracket 11.Structure from the above mentioned, each optical element arises from first adjustable diaphragm 2 on optics adjustment platform 6, terminates in second adjustable diaphragm.After attenuator slot 4 was positioned at first adjustable diaphragm, polarization beam splitter prism was between the slot 4 and second adjustable diaphragm 7, and 20～30cm place got final product directly over observation device 3 optional CCD monitors were usually located at polarization beam splitter prism 4.Two tunable optical door screen plane is perpendicular to the line O of two diaphragm central points
2O
2, polarization beam splitter prism front and rear surfaces and slot direction are in the diaphragm plane parallel.
Said auxiliary conditioning unit of the present utility model is to place on the direction that laser instrument 1 emission light beam advances, and 1～3cm disposes and puts the fiber coupler 9 that has coupled lens 902 behind auxiliary conditioning unit, and facing fiber-optic output 10 has expansion light source 12.
Said novel auxiliary conditioning unit through be commonly used in laser instrument 1 commonly used as semiconductor laser, dye laser, the laser polarization state that sends of laser instrument 1 is that line is compiled and shaken thus, plane of polarization is adjusted 6 of platforms perpendicular to optics, as plane of polarization not in this direction, can be so far on the direction by half-wave plate rotatory polarization face.
Said first adjustable diaphragm 2 is diaphragm adjustable size, should be greater than optical fiber coupled lens 902 diameters when maximum.
Said observation device 3 can be selected the CCD monitor, and requiring has response to the light of used optical maser wavelength, generally is used for the observation of infrared band.For visible light wave range, also can on former CCD monitor position, use the film viewing screen Direct observation without the CCD monitor.
It is the situations that are used for than the strong beam coupling that said attenuator slot 4 can insert different attenuator 13.The decay laser intensity makes it not cause that the CCD monitor is full closes or do not damage eyesight.Attenuator 13 thickness should not surpass 2mm, and slot 4 has several different in width, are used for inserting the attenuator of different-thickness.
Polarization beam splitter prism 5: requiring has higher extinction ratio, at least more than 20dB for used optical maser wavelength.Anti-reflection film is all plated, the optical axis O of beam-splitting surface direction and laser instrument 1 in 4 surfaces up and down in front and back at it
1O
1Angle at 45.
Optics is adjusted platform 6: require stability preferably, and position all around, the height pitching is scalable all.Be the adjustment direction of 6 DOF, adjust on the platform shell face and have screw and groove, be used for fixing the optical element on the optics adjustment platform 6, adjust platform 6 surfaces and handle through blackout.
Second adjustable diaphragm 7 and first adjustable diaphragm, 2 specifications are in full accord.
The first optical fiber adjusting bracket 8 and the second adjustable optic fibre frame 11 are selected commercially available high-precision optical fiber adjusting bracket for use.
Expansion light source 9: require the light source area at least greater than the area of coupling output lens, have than high power in order to the stronger light beam of output.
The regulating step of use is:
The 1st step: the situation that I. more easily adjusts for laser beam position, direction:
＜1〉second adjustable diaphragm 2 is opened greatly, observed with observing device 3.By regulating the translation knob of the first optical fiber adjusting bracket 8, coupled lens 902 centers of fiber coupler 9 are overlapped substantially with second adjustable diaphragm, 7 centers.
＜2〉first adjustable diaphragm 2 and second adjustable diaphragm 7 are all turned down, regulate incoming laser beam, make it to pass second adjustable diaphragm 7.Then incoming laser beam passes coupled lens 902 centers substantially, second adjustable diaphragm 7 is opened greatly again, makes it not stop incoming beam.
II. for the difficult situation about adjusting of laser beam position, direction:
＜1〉first adjustable diaphragm 2 and second adjustable diaphragm 7 are all turned down, adjust about the height pitching of platform 6 etc., make incident beam pass two diaphragms 2,7 by adjusting sextuple optics.
＜2〉block laser beam, second adjustable diaphragm 7 is opened greatly, observe,, coupled lens 902 centers are overlapped substantially with second adjustable diaphragm, 7 centers by regulating the translation knob of the first optical fiber adjusting bracket 8 with observing device 3.
First adjustable diaphragm 8 is opened greatly, removed stopping laser instrument 1.
The 2nd step: regulate the focal length of observing device 3, can see that a bright spot is arranged in the circular visual field.This is because incoming laser beam is that plane of polarization is adjusted the line polarisation on platform 6 planes perpendicular to optics, so can be expedite substantially by the polarization beam splitter prism 5 as above-mentioned placement.Incident beam is similar to pointolite through beating after coupled lens 902 focusing on the porcelain bushing shell 901 outside fiber end face, and its reflected light is approximately horizontal infection behind coupled lens, higher brightness is arranged.Sub-fraction also has considerable brightness so though the beam-splitting surface of polarization beam splitter prism 5 only reflects wherein.
Then, open the preceding expansion light source 12 of optical fiber other end coupling output terminal, can see another bright spot in the visual field, these two bright spots are easy to distinguish, and only need keep off incoming laser beam or expansion light source 12.
The 3rd step: regulate the first optical fiber adjusting bracket 8, two bright spots are overlapped, whole circular field luminance this moment obviously reduces, in fiber-optic output 10 existing laser beam outputs, and then the fine setting adjusting knob, make output power rise to maximal value.Adjustment finishes, and withdraws auxiliary conditioning unit and gets final product.
Advantage of the present utility model:
The utility model auxiliary conditioning unit is simple in structure, and all elements all have off-the-shelf to buy, and assembling easily.
Can shorten the adjustment time greatly with device of the present utility model, a new hand who does not have optical fiber coupling adjusting experience adopts device of the present utility model, by the step of introducing, can obtain coupling output in 20 minutes.
Embodiment:
We will advance core diameter φ 5.3 μ m polarization maintaining optical fibres by the optically-coupled that ti sapphire laser sends.Ti sapphire laser is ring-like laser instrument, TEM
00Mould, the about 2mm of light beam half width, the angle of divergence 1.7 milliradians.Optical fiber is single-mode polarization maintaining fiber, the coupled lens of band focal length 11mm.Two tunable optical door screens, optics are adjusted platform, 6 optical fiber coupling adjusting bracket all can be chosen finished product.Polarization beam splitter prism 5 has plated the 780nm anti-reflection film.Attenuator 13 adopts 1.8mm, to 780nm laser-transmitting rate about 1 ~ the blue tinted glass optical filter.60 watts of incandescent lamps of expansion light source 12 usefulness get final product.
Adopt the utility model, in 5 minutes, obtain coupling output.Opposite need not auxiliary conditioning unit of the present utility model, the Laboratory Technician with half an hour above time side obtain coupled laser output, newly advance breadboard postgraduate and export with obtaining coupled laser more than 2 hours yet.So, adopt the regulating device adjusting time of the present utility model to shorten more than five times.This has proved absolutely and the utility model has the advantages that significantly.
Claims (1)
1. the auxiliary conditioning unit of Real Time Observation optical fiber coupling, laser instrument (1) emitted laser bundle shines on the fiber coupler (9) that places the first optical fiber adjusting bracket (8), it is characterized in that placing between laser instrument (1) and the fiber coupler (9) auxiliary conditioning unit on the light path mainly to contain optics and adjust platform (6), the two ends of adjusting on the platform (6) at optics are equipped with first adjustable diaphragm (2) and second adjustable diaphragm (7) respectively, on the adjustment platform of the optics between first adjustable diaphragm (2) and second adjustable diaphragm (7) (6), be equipped with for the attenuator slot (4) that inserts attenuator (13), on the adjustment platform of the optics between attenuator slot (4) and second adjustable diaphragm (7) (6), be equipped with polarization beam splitter prism (5), two adjustable diaphragms (2,7) the line of centres (O
2O
2) pass the live part of attenuator (13) and polarization beam splitter prism (5), directly over polarization beam splitter prism (5), be equipped with and observe device (3), be equipped with expansion light source (12) facing to the fiber-optic output (10) that is clipped on the second optical fiber adjusting bracket (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00249352 CN2442282Y (en) | 2000-09-22 | 2000-09-22 | Auxiliary regulator for real time viewing optical fiber coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00249352 CN2442282Y (en) | 2000-09-22 | 2000-09-22 | Auxiliary regulator for real time viewing optical fiber coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2442282Y true CN2442282Y (en) | 2001-08-08 |
Family
ID=33607809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00249352 Expired - Fee Related CN2442282Y (en) | 2000-09-22 | 2000-09-22 | Auxiliary regulator for real time viewing optical fiber coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2442282Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106291837A (en) * | 2016-03-11 | 2017-01-04 | 上海瑞柯恩激光技术有限公司 | Laser beam coupling detection debugging structure and detection adjustment method |
| CN112596253A (en) * | 2020-12-30 | 2021-04-02 | 合肥中科领谱科技有限公司 | Light beam superposition adjusting device and method |
| CN113092075A (en) * | 2021-04-09 | 2021-07-09 | 中国科学院光电技术研究所 | Variable-angle high-precision calibration light source system |
-
2000
- 2000-09-22 CN CN 00249352 patent/CN2442282Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106291837A (en) * | 2016-03-11 | 2017-01-04 | 上海瑞柯恩激光技术有限公司 | Laser beam coupling detection debugging structure and detection adjustment method |
| CN106291837B (en) * | 2016-03-11 | 2018-08-10 | 上海瑞柯恩激光技术有限公司 | Laser beam coupling detection debugging structure and detection adjustment method |
| CN112596253A (en) * | 2020-12-30 | 2021-04-02 | 合肥中科领谱科技有限公司 | Light beam superposition adjusting device and method |
| CN112596253B (en) * | 2020-12-30 | 2023-10-31 | 合肥中科领谱科技有限公司 | Light beam superposition adjusting device and adjusting method |
| CN113092075A (en) * | 2021-04-09 | 2021-07-09 | 中国科学院光电技术研究所 | Variable-angle high-precision calibration light source system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |