CN108549129A - A kind of laser power precision regulating method and laser power precision regulator - Google Patents
A kind of laser power precision regulating method and laser power precision regulator Download PDFInfo
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- CN108549129A CN108549129A CN201810609285.7A CN201810609285A CN108549129A CN 108549129 A CN108549129 A CN 108549129A CN 201810609285 A CN201810609285 A CN 201810609285A CN 108549129 A CN108549129 A CN 108549129A
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 8
- 239000013307 optical fiber Substances 0.000 claims abstract description 74
- 239000000835 fiber Substances 0.000 claims abstract description 38
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 238000003780 insertion Methods 0.000 claims abstract description 9
- 230000037431 insertion Effects 0.000 claims abstract description 9
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 5
- 230000008030 elimination Effects 0.000 claims description 3
- 238000003379 elimination reaction Methods 0.000 claims description 3
- 230000009897 systematic effect Effects 0.000 claims description 3
- 229940085805 fiberall Drugs 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 10
- 230000008859 change Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 241000931526 Acer campestre Species 0.000 description 1
- 238000012356 Product development Methods 0.000 description 1
- 206010048669 Terminal state Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/02—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light
-
- 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
-
- 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
- G02B6/3801—Permanent connections, i.e. wherein fibres are kept aligned by mechanical means
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The invention discloses a kind of laser power precision regulating method and laser power precision regulators, transmission mode based on laser in optical fiber, this pattern is that laser is allowed to advance in optical fiber, can be totally reflected after contacting fiber sidewall, continues to advance with next cone angle direction；When laser reaches fiber end face, if another optical fiber is with completely coaxial and distance close to 0 position and this optical fiber to just, be emitted in air can laser can almost without loss enter another optical fiber, if and going to place another optical fiber with completely coaxial and holding certain distance position, the pad value that can be centainly lost.Its core technology is the transmission mode in optical fiber, the pad value that can be centainly lost based on laser.The convenient plugging mode of laser power precision regulator is used so that all connectors, wire jumper are all not required to switch on original optical fiber link, and the Insertion Loss of adjustable attenuator itself is fixed, therefore will not introduce additional Insertion Loss error in testing.
Description
Technical field
The present invention relates to optical fiber transmission technique field more particularly to a kind of laser power precision regulating methods and laser work(
Rate precision regulator.
Background technology
A kind of transmission signal of the laser as long range, high bandwidth, low distortion, is widely used in optical fiber transmission field, in number
According to extremely important in terms of transmission.And in scientific research, scheduling and planning, engineer application etc., generally require to laser signal intensity into
Row is linked into equipment again after adjusting, and mainly has following reason：1, enter optical fiber after Laser emission to transmit, intensity can be with
The decaying in optical fiber is coped with, the signal strength for reaching application terminal is enough by end-probing and is converted into electric signal, but each answers
All different with the transmission range of case, the signal strength that Distance Shortened then enters terminal is bigger than normal, this influences whether the work of terminal
State and service life need suitably to reduce；2, the adaptability of test terminal-pair varying strength signal is needed during scheduling and planning
And monitoring precision, it needs to adjust laser signal and collects test result to varying strength；3, the test in product development process
Need to test many indexs of terminal, the test of these indexs be unable to do without accurate and abundant input signal, this also according to
Rely and continuously adjusts technology in precision.
There are mainly three types of adjusting means or equipment in industry at present：1, fixed light decay：Laser power can only be decayed one
Fixed value, error is very big, generally requires multiple fixed light decay series connection to realize the pad value of bigger, this can only substantially adjust mesh
Near scale value, the operating condition of terminal is substantially met, it is impossible to be used in precision measurement；2, mechanical adjustable light decay：It is transmitted in optical fiber
The translucent medium for increasing an absorbable laser on path changes path length of the laser by medium by mechanical knob,
To obtain different pad values.The pad value of this regulative mode is not that linear homogeneous changes, and knob scale can only be rough
Estimation, actual attenuation value need external light power meter to read.Control accuracy and control range in order to balance, unit length medium
Pad value it is smaller, and media size adjustable range is very big, this causes equipment size larger.Further, since test luminous power
Fiber path is different from the fiber path of real work, and Insertion Loss is inconsistent to cause data inaccurate, and path switching efficiency is also low, existing
There is the optical interface form of equipment also to cause using very inconvenient with terminal interface form difference；3, program-controlled light decay：Mechanically may be used
Light modulation increases built-in light power meter to read and show pad value on declining, and programming Control laser is long by the route of medium
Degree, with stepper motor come fine adjustment, user only needs the pad value needed for key-press input.This light decay facilitates user, but ruler
Very little big problem more exacerbates, and cost higher, and maintenance is more difficult, and need to preset the wavelength of built-in light power meter,
Because the power reading of laser detector is related to wavelength.
Invention content
The object of the present invention is to provide a kind of laser power precision regulator, which has degree of regulation height, cost
Low, principle is reliable, can self-calibrating, it is reproducible, unrelated with optical maser wavelength, Function Extension potentiality are big the advantages that.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of laser power precision regulating method, the transmission mode based on laser in optical fiber, this pattern are to allow laser at 15 °
Cone angle advance in the single mode optical fiber of 9 micron diameters or the multimode fibre of 50 micron diameters, contact fiber sidewall after can occur
Total reflection continues to advance with next cone angle direction, and the laser more than 15 ° will not be totally reflected and can enter inside peripheral reflecting layer
It consumes；
It when laser reaches fiber end face, can be emitted in air with 15 ° of cone angles, if another optical fiber is with completely coaxial and distance
Close to 0 position and this optical fiber to just, be emitted in air can laser can almost without loss enter another optical fiber,
And if going to place another optical fiber with completely coaxial and holding certain distance position, the decaying that can be centainly lost
Value.
Further, the single mode optical fiber of 9 micron diameters, after launching 14 microns of distances by 15 ° of cone angles, hot spot sectional area meeting
Increase 1 times, the light of only half enters the optical fiber head on opposite at this time, is equivalent to the decaying of 3dB, often generates 0.7 micron of displacement, phase
When in the decaying of 0.15dB, when the distance of two optical fiber end surfaces is bigger, degree of regulation can be also stepped up.
Further, the reading manner of pad value, in advance demarcates complete machine, measures optical fiber head adjusting position and decaying
The correspondence of value obtains a large amount of data and is written in microcontroller, and microcontroller can be re-write when there is systematic error
It corrects, the Insertion Loss value of system itself also can make up elimination in calibration.
A kind of laser power precision regulator, including box body, the box body are provided with the first fiber fixed frame, the second optical fiber
Fixed frame, optical fiber and fine adjustment screw rod, the optical fiber are divided into input section and deferent segment, first fiber fixed frame and second
Parallel setting between fiber fixed frame is fixed with the contact jaw of input section, second light on first fiber fixed frame
It is fixed with the contact jaw of deferent segment on fine fixed frame, is contacted between the input section and deferent segment, and be arranged with therebetween
The other end of opening ceramic bushing, the input section is connected to input adapter, and the other end of the deferent segment is connected to export
Connector is provided with spring between first fiber fixed frame and the second fiber fixed frame, and one of them is fixing end, separately
One is movable terminal, and the fine adjustment screw rod is arranged in the side of movable terminal, for adjust the first fiber fixed frame and
The distance between second fiber fixed frame.
Further, the top of the box body is transparent.
Further, it is provided with scale on the fine adjustment screw rod, and often rotates a scale unit and generates microns of positions
It moves.
Further, the optical fiber is LC optical fiber or SC optical fiber.
Further, the optical fiber is provided with two-way, wherein being LC optical fiber all the way, another way is SC optical fiber.
The beneficial effects of the invention are as follows：
Laser power precision regulator and adjusting method of the present invention use entirely different regulative mode, and core technology is base
In transmission mode of the laser in optical fiber, the pad value that can be centainly lost.Use the laser power precision regulator side
Just plugging mode so that all connectors, wire jumper are all not required to switch on original optical fiber link, and adjustable attenuator itself is slotting
Damage is fixed, therefore will not introduce additional Insertion Loss error in testing.
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the structural schematic diagram of laser power precision regulator of the present invention.
Reference numeral：1, box body；2, the first fiber fixed frame；3, the second fiber fixed frame；4, fine adjustment screw rod；5, defeated
Enter section；6, deferent segment；7, opening ceramic bushing；8, input adapter；9, out splice going splice；10, spring.
Specific implementation mode
The invention will be further described in the following with reference to the drawings and specific embodiments, so that those skilled in the art can be more
Good understanding is of the invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
As shown in Figure 1, a kind of laser power precision regulator, including box body 1, it is solid that the box body 1 is provided with the first optical fiber
Determine frame 2, the second fiber fixed frame 3, optical fiber and fine adjustment screw rod 4, the optical fiber is divided into input section 5 and deferent segment 6, and described
Parallel setting between one fiber fixed frame 2 and the second fiber fixed frame 3 is fixed with input on first fiber fixed frame 2
The contact jaw of section 5, is fixed with the contact jaw of deferent segment 6 on second fiber fixed frame 3, the input section 5 and deferent segment 6 it
Between contact, and be arranged with opening ceramic bushing 7 therebetween, the other end of the input section 5 is connected to input adapter 8,
The other end of the deferent segment 6 is connected to out splice going splice 9, is set between first fiber fixed frame, 2 and second fiber fixed frame 3
It is equipped with spring 10, and one of them is fixing end, another is movable terminal, and the fine adjustment screw rod 4 is arranged removable
The side of moved end, for adjusting the distance between the first fiber fixed frame 2 and the second fiber fixed frame 3.
This luminous power precision regulator uses entirely different regulative mode, and core technology is based on laser in optical fiber
In transmission mode, this pattern is to allow laser in 15 ° of cone angle in 9 micron diameters（Single mode）Or 50 micron diameter（Multimode）Light
Advance in fibre, can be totally reflected after contacting fiber sidewall, continues to advance with next cone angle direction, the laser more than 15 ° is not
It can be totally reflected and can enter inside peripheral reflecting layer and consume.Therefore, it when laser reaches fiber end face, can be sent out with 15 ° of cone angles
Be mapped in air, if position of another optical fiber with completely coaxial and distance close to 0 with this optical fiber to just, being emitted to energy in air
Enough laser can almost without loss enter another optical fiber, and if going to put with completely coaxial and holding certain distance position
Set another optical fiber, the then pad value that can be centainly lost.
Use the common LC and SC fibre-optical splices form in current fibre-optic terminus.Input optical fibre is directly connected to terminal originally
On, it is inserted on adapter now, optical fiber head is transferred to by wire jumper, each self-retaining one on two optical fiber head frames in figure
Group optical fiber head, right end fixed frame is screwed, and left end fixed frame fine adjustment screw rod and spring cooperation are come adjusting position, and two
It is coaxial with opening ceramic bushing guarantee between group optical fiber head, only change distance.Convenient plugging mode makes original optical fiber chain
All connectors, wire jumper are all not required to switch on the road, and the Insertion Loss of adjustable attenuator itself is fixed, therefore will not be introduced in testing
Additional Insertion Loss error.
According to theoretical calculation, the single mode optical fiber of 9 μ m diameters, after launching 14 microns of distances by 15 ° of cone angles, hot spot sectional area
1 times is will increase, the light of only half enters the optical fiber head on opposite at this time, is equivalent to the decaying of 3dB.And every turn of Precision trimming screw rod
Dynamic 4 circle generates 1mm displacements, often rotates 1 ° of generation, 0.7 micron of displacement, is equivalent to the decaying of 0.15dB.To the test knot of prototype
Fruit shows that degree of regulation can be also stepped up when the distance of two optical fiber end surfaces is bigger, and we to actually use range seldom
Using in the decaying sections below 3dB, so practical adjustments precision can reach 0.1dB or more.
Close fine tuning screw rod can also improve degree of regulation using gear mechanism, and speed change is carried out by gear mechanism, can be with
Fine adjustment screw rod is set often to rotate 5 ° of displacements for generating 0.7 μm, it is program-controlled that this allows this technology to be realized with stepper motor（Step
5 ° of stepper motor control accuracy）.
This technology does not read the luminous power after decaying with detector, but is demarcated in advance to complete machine, measures optical fiber
Head adjusting position（Position data, the same digimatic micrometer of principle are obtained with grating measuring, precision reaches micron order）With pad value
Correspondence obtains a large amount of data and is written in microcontroller.In actual use, the adjusting position data of fine adjustment screw rod pass through
Microcontroller, which is tabled look-up, to be obtained pad value after interpolation calculation and shows.This measurement method, it is at low cost, it need not be to luminous power reality
Border measures so setting wavelength is not required to, if microcontroller can be re-write to correct by occurring systematic error after long-time service.System
The Insertion Loss value of itself also can make up elimination in calibration.
The above embodiment of the present invention is not limiting the scope of the present invention, and embodiments of the present invention are not limited to
This, all this kind the above according to the present invention is not departing from this according to the ordinary technical knowledge and customary means of this field
Under the premise of inventing above-mentioned basic fundamental thought, modification, replacement or change to other diversified forms that above structure of the present invention is made
More, it should all fall within the scope and spirit of the invention.
Claims (8)
1. a kind of laser power precision regulating method, it is characterised in that：Transmission mode based on laser in optical fiber, this pattern
It is that laser is allowed to advance in the single mode optical fiber of 9 micron diameters or the multimode fibre of 50 micron diameters in 15 ° of cone angle, contacts optical fiber
It can be totally reflected after side wall, continue to advance with next cone angle direction, the laser more than 15 ° will not be totally reflected and can enter outer
It encloses and is consumed inside reflecting layer；
It when laser reaches fiber end face, can be emitted in air with 15 ° of cone angles, if another optical fiber is with completely coaxial and distance
Close to 0 position and this optical fiber to just, be emitted in air can laser can almost without loss enter another optical fiber,
And if going to place another optical fiber with completely coaxial and holding certain distance position, the decaying that can be centainly lost
Value.
2. a kind of laser power precision regulating method according to claim 1, it is characterised in that：The single mode of 9 micron diameters
Optical fiber, after launching 14 microns of distances by 15 ° of cone angles, hot spot sectional area will increase 1 times, and the light of only half enters opposite at this time
Optical fiber head, be equivalent to the decaying of 3dB, often generate 0.7 micron of displacement, the decaying of 0.15dB is equivalent to, when two optical fiber head ends
The distance in face is bigger, and degree of regulation can be also stepped up.
3. a kind of laser power precision regulating method according to claim 1, it is characterised in that：The reading side of pad value
Formula in advance demarcates complete machine, measures the correspondence of optical fiber head adjusting position and pad value, obtains a large amount of data and writes
Enter in microcontroller, corrects when systematic error occur and can re-write microcontroller, the Insertion Loss value of system itself can also demarcate
When make up elimination.
4. a kind of laser power precision regulator, it is characterised in that：Including box body（1）, the box body（1）It is provided with the first optical fiber
Fixed frame（2）, the second fiber fixed frame（3）, optical fiber and fine adjustment screw rod（4）, the optical fiber is divided into input section（5）And output
Section（6）, first fiber fixed frame（2）With the second fiber fixed frame（3）Between parallel setting, first optical fiber fixes
Frame（2）On be fixed with input section（5）Contact jaw, second fiber fixed frame（3）On be fixed with deferent segment（6）Contact
End, the input section（5）And deferent segment（6）Between contact, and be arranged with opening ceramic bushing therebetween（7）, described defeated
Enter section（5）The other end be connected to input adapter（8）, the deferent segment（6）The other end be connected to out splice going splice（9）, institute
State the first fiber fixed frame（2）With the second fiber fixed frame（3）Between be provided with spring（10）, and one of them is fixation
End, another is movable terminal, the fine adjustment screw rod（4）It is arranged in the side of movable terminal, for adjusting the first optical fiber
Fixed frame（2）With the second fiber fixed frame（3）The distance between.
5. a kind of laser power precision regulator according to claim 4, it is characterised in that：The box body（1）Top
It is transparent.
6. a kind of laser power precision regulator according to claim 4, it is characterised in that：The fine adjustment screw rod
（4）On be provided with scale, and often rotate a scale unit and generate 0.7 micron of displacement.
7. a kind of laser power precision regulator according to claim 4, it is characterised in that：The optical fiber be LC optical fiber or
SC optical fiber.
8. a kind of laser power precision regulator according to claim 4 or 7, it is characterised in that：The optical fiber is provided with
Two-way, wherein being LC optical fiber all the way, another way is SC optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810609285.7A CN108549129A (en) | 2018-06-13 | 2018-06-13 | A kind of laser power precision regulating method and laser power precision regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810609285.7A CN108549129A (en) | 2018-06-13 | 2018-06-13 | A kind of laser power precision regulating method and laser power precision regulator |
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| CN108549129A true CN108549129A (en) | 2018-09-18 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810609285.7A Pending CN108549129A (en) | 2018-06-13 | 2018-06-13 | A kind of laser power precision regulating method and laser power precision regulator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4666243A (en) * | 1985-03-28 | 1987-05-19 | Telefonaktiebolaget Lm Ericsson | Fibre joint with optical attenuation |
| US5734778A (en) * | 1994-11-03 | 1998-03-31 | Loughlin; John P. | Variable attenuator connector |
| CN1317101A (en) * | 1998-09-11 | 2001-10-10 | 康宁股份有限公司 | Fiber coupler variable optical attennator |
| CN1402052A (en) * | 2002-09-05 | 2003-03-12 | 上海交通大学 | Electromagnetic drive dislocation micromechanical variable light attenuator |
| CN2546899Y (en) * | 2001-11-15 | 2003-04-23 | 鸿富锦精密工业（深圳）有限公司 | Adjustable optical attenuator |
| US20030091292A1 (en) * | 2001-11-15 | 2003-05-15 | Kun-Tsan Wu | Optic adaptor with vairable signal attenuation |
| CN1493898A (en) * | 2003-08-22 | 2004-05-05 | 中国科学院上海光学精密机械研究所 | Adjustable light attenuator |
| CN1866644A (en) * | 2006-04-07 | 2006-11-22 | 清华大学 | Method and apparatus for full optical fiber Q-switched laser |
| CN2906650Y (en) * | 2006-01-12 | 2007-05-30 | 中兴通讯股份有限公司 | Adjustable optical attenuator |
| CN102135642A (en) * | 2011-02-28 | 2011-07-27 | 南京邮电大学 | Variable optical attenuator |
| CN104730642A (en) * | 2015-03-25 | 2015-06-24 | 浙江工业大学 | All-optical-fiber adjustable optical attenuator |
| CN206863333U (en) * | 2017-05-17 | 2018-01-09 | 武汉昱升光器件有限公司 | The mechanical device of adjustable light decay |
| CN208297774U (en) * | 2018-06-13 | 2018-12-28 | 广州佳隆信息科技有限公司 | A kind of laser power precision regulator |
-
2018
- 2018-06-13 CN CN201810609285.7A patent/CN108549129A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4666243A (en) * | 1985-03-28 | 1987-05-19 | Telefonaktiebolaget Lm Ericsson | Fibre joint with optical attenuation |
| US5734778A (en) * | 1994-11-03 | 1998-03-31 | Loughlin; John P. | Variable attenuator connector |
| CN1317101A (en) * | 1998-09-11 | 2001-10-10 | 康宁股份有限公司 | Fiber coupler variable optical attennator |
| CN2546899Y (en) * | 2001-11-15 | 2003-04-23 | 鸿富锦精密工业（深圳）有限公司 | Adjustable optical attenuator |
| US20030091292A1 (en) * | 2001-11-15 | 2003-05-15 | Kun-Tsan Wu | Optic adaptor with vairable signal attenuation |
| CN1402052A (en) * | 2002-09-05 | 2003-03-12 | 上海交通大学 | Electromagnetic drive dislocation micromechanical variable light attenuator |
| CN1493898A (en) * | 2003-08-22 | 2004-05-05 | 中国科学院上海光学精密机械研究所 | Adjustable light attenuator |
| CN2906650Y (en) * | 2006-01-12 | 2007-05-30 | 中兴通讯股份有限公司 | Adjustable optical attenuator |
| CN1866644A (en) * | 2006-04-07 | 2006-11-22 | 清华大学 | Method and apparatus for full optical fiber Q-switched laser |
| CN102135642A (en) * | 2011-02-28 | 2011-07-27 | 南京邮电大学 | Variable optical attenuator |
| CN104730642A (en) * | 2015-03-25 | 2015-06-24 | 浙江工业大学 | All-optical-fiber adjustable optical attenuator |
| CN206863333U (en) * | 2017-05-17 | 2018-01-09 | 武汉昱升光器件有限公司 | The mechanical device of adjustable light decay |
| CN208297774U (en) * | 2018-06-13 | 2018-12-28 | 广州佳隆信息科技有限公司 | A kind of laser power precision regulator |
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