CN106444011B - A kind of optical attenuator based on monolithic circular filter - Google Patents
A kind of optical attenuator based on monolithic circular filter Download PDFInfo
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- CN106444011B CN106444011B CN201611028011.6A CN201611028011A CN106444011B CN 106444011 B CN106444011 B CN 106444011B CN 201611028011 A CN201611028011 A CN 201611028011A CN 106444011 B CN106444011 B CN 106444011B
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- optical
- collimator
- circular filter
- code
- motor
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- 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
- G02B26/023—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light comprising movable attenuating elements, e.g. neutral density filters
-
- 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
- G02B26/04—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light by periodically varying the intensity of light, e.g. using choppers
Abstract
The invention discloses a kind of optical attenuators based on monolithic circular filter comprising cavity, photo-coupler, optical filter box, collimator assembly and motor and code-disc component；Wherein, photo-coupler, optical filter box and collimator assembly are respectively positioned in cavity；Motor and code-disc component are mounted on cavity right side wall.The attenuator structure based on monolithic circular filter that the present invention designs, bar shaped optical filter is substituted by monolithic circular filter, linear mould group is substituted using homemade cavity, the Larger Dynamic of optical power both may be implemented in this way, high-precision decays, expensive and bulky linear mould group is eliminated again, while also solving the discrete circular filter structure of two panels structure is complicated, assembly difficulty and the disadvantages of decaying jump.
Description
Technical field
The present invention relates to a kind of optical attenuators based on monolithic circular filter.
Background technique
Optical attenuator is must can not in optical fiber communication equipment detection (such as light power meter metering, receiver sensitivity measurement)
One of few test equipment.There are many technologies for realizing optical attenuation, and more commonly used is that mechanical light-blocking method, magneto-optical method, wedge shape have
Color glass absorption process and gray level neutral density (ND) optical filter method.
Using the optical attenuator structure of gray level neutral density (ND) optical filter method, there are mainly two types of forms at present:
First is that the structure based on bar shaped optical filter, as shown in Figure 1, the attenuator include linear mould group 103, optical filter 102,
The components such as motor and optical collimator 101 are limited by stroke and the cost limitation of linear mould group, and there are volumes to lack at high cost wait greatly
Point；
Second is that the structure based on the discrete circular filter of two panels, as shown in Fig. 2, the attenuator includes 2 neutral density filters
Mating plate (ND), 2 DC servo motors and self-control cavity and optical fiber collimator.
Relative to bar shaped optical filter ledger line modular structure, the infrastructure cost and volume all decrease, but due to this
Structure two-stage attenuating structure, cause the structure exist structure is complicated, assembly difficulty and decaying hopping phenomenon the disadvantages of.
It can be seen that the optical attenuator of above two form cannot meet the needs of market is more and more harsh very well.
Summary of the invention
It is an object of the invention to propose a kind of optical attenuator based on monolithic circular filter, there is small in size, cost
Low, structure and the advantages that assembly is simple and positioning accuracy is high.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of optical attenuator based on monolithic circular filter, including cavity, photo-coupler, optical filter box, collimator
Component and motor and code-disc component；
Wherein, photo-coupler, optical filter box and collimator assembly are respectively positioned in cavity；
Motor and code-disc component are mounted on cavity right side wall；
Optical filter box includes monolithic circular filter, No.1 shaft coupling, locking nut and light barrier；
In the middle part of circular filter be equipped with perforation, No.1 shaft coupling via the perforation across；
The left end of No.1 shaft coupling is located at the left side of circular filter, for being threadedly coupled with locking nut to realize
The positioning and clamping of circular filter；
The right end of No.1 shaft coupling is located at the right side of circular filter, for connecting with motor and code-disc component；
Light barrier is mounted on the left end of No.1 shaft coupling, and with circular filter synchronous rotary；
Light barrier is located at photo-coupler center, and light barrier is at rotation to the optical output position of photo-coupler,
Change the height of optocoupler output level by blocking optical path；
Collimator assembly includes collimator bracket, No.1 optical collimator and No. two optical collimators；
Collimator bracket is in the same plane with the circular filter center of circle；
No.1 optical collimator and No. two optical collimators are horizontally arranged at respectively on collimator bracket；No.1 optical collimator and two
Number optical collimator coaxial line；
No.1 optical collimator and No. two optical collimators are located at the left and right side of circular filter；
Motor and code-disc component include decelerating motor, code-disc, No. two shaft couplings, connecting plate and encoder；
Decelerating motor is fixed on connecting plate by motor shaft sleeve；
Connecting plate is installed on cavity right side wall；Encoder is installed on connecting plate and ipsilateral with code-disc；
Decelerating motor is connect by No.1 shaft coupling with optical filter box, for driving optical filter box to rotate；
Decelerating motor is connect by No. two shaft couplings with code-disc, for cooperating with encoder to detect decelerating motor rotation position
Confidence breath.
Preferably, the inner surface of the cavity is formed by blackening processing technology.
Preferably, the right side wall of the cavity is to be obliquely installed, and when cavity is horizontally arranged, cavity right side wall and vertical
Angle between face is r；
Center line of the setting angle of the photo-coupler, optical filter box and motor and code-disc component with cavity be in
The angle r.
Preferably, the circular filter is neutral-density filter.
Preferably, between the right end and circular filter of the No.1 shaft coupling and locking nut and circular filter it
Between be face contact.
Preferably, between the right end and circular filter of the No.1 shaft coupling and locking nut and circular filter it
Between be respectively equipped with elastomeric pad.
Preferably, the collimator bracket uses U-bracket；
No.1 optical collimator mounting hole and No. two optical collimator mounting grooves are relatively set on U-bracket；
The aperture of No.1 optical collimator mounting hole is greater than the diameter of No.1 optical collimator, and No.1 optical collimator is pacified by glue
Loaded in the No.1 optical collimator mounting hole；
No. two optical collimator mounting grooves are V-shaped groove, and when No. two optical collimators are placed in No. two optical collimator mounting grooves
When, No. two optical collimators are fixed on U-bracket by pressing plate.
Preferably, the collimator bracket is made of brass sheet material.
Preferably, the motor and code-disc component further include the protection cap connecting with connecting plate, encoder and the equal position of code-disc
Between protection cap and connecting plate.
Preferably, the light barrier is Z-shaped；One end of light barrier is equipped with through-hole, for light barrier to be installed to No.1 connection
On axis device, the other end of light barrier is occlusion part, for blocking the light of photo-coupler output in light barrier rotary course.
The present invention has the advantage that
The present invention combines existing manufacturing process technology, devises a kind of completely new attenuator based on monolithic circular filter
Structure substitutes bar shaped optical filter by monolithic circular filter, and linear mould group is substituted using homemade cavity, both may be used in this way
To realize that the Larger Dynamic of optical power, high-precision decay, and eliminate expensive and bulky linear mould group, while also solving
Structure is complicated for the discrete circular filter structure of two panels of having determined, assembly difficulty and decaying hopping phenomenon the disadvantages of.
Detailed description of the invention
Fig. 1 is in the prior art based on the attenuator schematic diagram of bar shaped optical filter；
Fig. 2 is the attenuator schematic diagram in the prior art based on the discrete circular filter of two panels；
Fig. 3 is a kind of schematic diagram of the optical attenuator based on monolithic circular filter in the present invention；
Fig. 4 is a kind of structural schematic diagram of the optical attenuator based on monolithic circular filter in the present invention；
Fig. 5 is the structural schematic diagram of optical filter box in the present invention；
Fig. 6 is the structural schematic diagram of collimator assembly in the present invention；
Fig. 7 is the structural schematic diagram of collimator bracket in the present invention；
Fig. 8 is the structural schematic diagram of motor and code-disc component in the present invention；
Wherein, 101- optical collimator, 102- optical filter, the linear mould group of 103-；1- cavity, 2- photo-coupler, 3- optical filter
Component, 4- collimator assembly, 5- motor and code-disc component, 6- circular filter, 7- No.1 shaft coupling, 8- locking nut, 9- gear
Mating plate, 10- elastomeric pad, 11- collimator bracket, 12- No.1 optical collimator, No. bis- optical collimators of 13-, 14- No.1 light collimation
Device mounting hole, No. bis- optical collimator mounting grooves of 15-, 16- pressing plate, 17- decelerating motor, 18- code-disc, No. bis- shaft couplings of 19-, 20-
Connecting plate, 21- encoder, 22- protection cap, 23- bolt hole, 24- bolt hole, 25- bolt, 26- bolt, 27- motor shaft sleeve.
Specific embodiment
Basic principle of the invention is as follows: as shown in figure 3, the attenuator based on monolithic circular filter includes 1 monolithic
Circular filter, 1 DC servo motor and 2 optical fiber collimators.After light input is collimated by optical collimator 1, by by electricity
The monolithic circular filter that machine drives carries out optical power attenuation, and then exports after being collimated by optical collimator 2.
With reference to the accompanying drawing and specific embodiment invention is further described in detail:
As shown in connection with fig. 4, a kind of optical attenuator based on monolithic circular filter, including cavity 1, photo-coupler 2, optical filtering
Piece component 3, collimator assembly 4 and motor and code-disc component 5.
Wherein, photo-coupler 2, optical filter box 3 and collimator assembly 4 are respectively positioned in cavity 1；
Motor and code-disc component 5 are mounted on 1 right side wall of cavity.
As shown in figure 5, optical filter box 3 includes monolithic circular filter 6, No.1 shaft coupling 7, locking nut 8 and light-blocking
Piece 9.Wherein, monolithic circular filter 6 is neutral-density filter.
In the middle part of circular filter 6 be equipped with perforation, No.1 shaft coupling 7 via the perforation across.
The left end of No.1 shaft coupling 7 is located at the left side of circular filter 6, for be threadedly coupled with locking nut 8 with
Realize the positioning and clamping of circular filter 6.
Preferably, between the right end of No.1 shaft coupling 7 and circular filter 6 and locking nut 8 and circular filter 6 it
Between be face contact, conducive to improve circular filter 6 rotate when flatness and concentricity.
Preferably, between the right end of No.1 shaft coupling 7 and circular filter 6 and locking nut 8 and circular filter 6 it
Between be respectively equipped with elastomeric pad, such as elastomeric pad 10.
By elastomeric pad 10, while transmitting certain pressure, protect 6 surface of circular filter not damaged.
The right end of No.1 shaft coupling 7 is located at the right side of circular filter 6, for connecting with motor and code-disc component；
Light barrier 9 is mounted on the left end of No.1 shaft coupling 7, and with 6 synchronous rotary of circular filter.
Light barrier 9 is located at 2 center of photo-coupler, and light barrier 9 is in rotation to the optical output position of photo-coupler 2
When, change the height of optocoupler output level by blocking optical path.
Cooperated by light barrier 9 and photo-coupler 2, form position clearing device, to be positioned to circular filter 6.
Specifically, light barrier 9 is Z-shaped, one end is equipped with through-hole, for light barrier to be installed to No.1 shaft coupling 7, separately
One end is occlusion part, for blocking the light of the output of photo-coupler 2 in 9 rotary course of light barrier.
The right side wall of cavity 1 is to be obliquely installed in the present invention, and when cavity 1 is horizontally arranged, 1 right side wall of cavity and vertical
Angle between face is r, and the purpose of the design is to be easily installed motor and code-disc component 5.
The setting angle of photo-coupler 2 and optical filter box 3 is in the angle r with the center line of cavity 1.
The value range of angle r in the present invention is 7-10 degree, such as r can take 8,9 etc..
By designing the setting angle of above-mentioned photo-coupler 2 and optical filter box 3, conducive to the echo damage for improving light source
Consumption, while reducing volume and reducing cost.
In addition, the present invention is also by blackening process, to absorb the reflected light of internal optical path to the inner surface of cavity 1.
As shown in fig. 6, collimator assembly 4 includes collimator bracket 11, No.1 optical collimator 12 and No. two optical collimators 13.
Collimator bracket 11 is in the same plane with 6 center of circle of circular filter.
No.1 optical collimator 12 and No. two optical collimators 13 are horizontally arranged at respectively on collimator bracket 11, wherein No.1
Optical collimator 12 and No. two 13 coaxial lines of optical collimator.
No.1 optical collimator 12 and No. two optical collimators 13 are located at the left and right side of circular filter 6.
As shown in fig. 7, the collimator bracket 11 uses U-bracket.
No.1 optical collimator mounting hole 14 and No. two optical collimator mounting grooves 15 are relatively set on U-bracket.
The aperture of No.1 optical collimator mounting hole 14 is greater than the diameter of No.1 optical collimator 12, and No.1 optical collimator 12 passes through
Glue is installed in the No.1 optical collimator mounting hole 14.
No. two optical collimator mounting grooves 15 are V-shaped groove, and when No. two optical collimators 13 are placed in No. two optical collimator installations
When in slot 15, No. two optical collimators are fixed on U-bracket by pressing plate 16.
Specifically, bolt hole 23,24 is respectively set in the two sides of No. two optical collimator mounting grooves 15, pressing plate 16 passes through
Bolt 25,26 is installed on collimator bracket 11.
The installation process of No.1 optical collimator 12 and No. two optical collimators 13 is specific as follows:
First No. two optical collimators 13 are placed in No. two optical collimator mounting grooves 15, then utilize pressing plate 16 by No. two light standards
Straight device is fixed on U-bracket；No.1 optical collimator 12 is put into No.1 optical collimator mounting hole 14 again, passes through measurement two
The Output optical power size of optical collimator is coaxial to determine whether, is consolidated using glue to No.1 optical collimator 12 after coaxial
It is fixed.
Preferably, collimator bracket 11 is made of brass sheet material, and rigidity significantly improves.
Simultaneously because collimator assembly 4 is using free positioning (No.1 optical collimator 12) with V-groove positioning (two in the present invention
Number optical collimator 13) mode that combines, conducive to the accuracy and straightness for improving light source.
As shown in figure 8, motor and code-disc component 5 include decelerating motor 17,18, No. two shaft couplings 19 of code-disc, connecting plate 20,
Encoder 21 and protection cap 22.
Decelerating motor 17 is fixed on connecting plate 20 by motor shaft sleeve 27.
Connecting plate 20 is installed on 1 right side wall of cavity.Encoder 21 is installed on connecting plate 20 and ipsilateral with code-disc 18.
Decelerating motor 17 is connect by No.1 shaft coupling 7 with optical filter box, for driving optical filter box to rotate.
Code-disc 18 is connect by No. two shaft couplings 19 with decelerating motor 17, is cooperated for encoder 21, with detection deceleration electricity
The rotation position information of machine 17.
Protection cap 22 is connect with connecting plate 20, and encoder 21 and code-disc 18 are respectively positioned between protection cap and connecting plate.
Protection cap 22 plays the role of code-disc 18 to protect and prevent extraneous optical path from interfering internal optical path, while protection cap 22
Blackening process is carried out, can also play the role of absorbing reflected light.
Preferably, the center line of the setting angle of motor and code-disc component 5 and cavity 1 is also in the angle r.Optical filter in the present invention
Component 3 and motor and code-disc component 5 together constitute the high alignment rotating mechanism of r overturning angle.
Certainly, described above is only that presently preferred embodiments of the present invention is answered the present invention is not limited to enumerate above-described embodiment
When explanation, anyone skilled in the art is all equivalent substitutes for being made, bright under the introduction of this specification
Aobvious variant, all falls within the essential scope of this specification, ought to be by protection of the invention.
Claims (8)
1. a kind of optical attenuator based on monolithic circular filter, which is characterized in that including cavity, photo-coupler, filter set
Part, collimator assembly and motor and code-disc component；
Wherein, photo-coupler, optical filter box and collimator assembly are respectively positioned in cavity；
Motor and code-disc component are mounted on cavity right side wall；
Optical filter box includes monolithic circular filter, No.1 shaft coupling, locking nut and light barrier；
In the middle part of circular filter be equipped with perforation, No.1 shaft coupling via the perforation across；
The left end of No.1 shaft coupling is located at the left side of circular filter, for being threadedly coupled with locking nut to realize circle
The positioning and clamping of optical filter；
The right end of No.1 shaft coupling is located at the right side of circular filter, for connecting with motor and code-disc component；
Light barrier is mounted on the left end of No.1 shaft coupling, and with circular filter synchronous rotary；
Light barrier is located at photo-coupler center, and light barrier passes through at rotation to the optical output position of photo-coupler
Optical path is blocked to change the height of optocoupler output level；
Collimator assembly includes collimator bracket, No.1 optical collimator and No. two optical collimators；
Collimator bracket and circular filter the center point are in same level；
No.1 optical collimator and No. two optical collimators are horizontally arranged at respectively on collimator bracket；No.1 optical collimator and No. two light
Collimator coaxial line；
No.1 optical collimator and No. two optical collimators are located at the left and right side of circular filter；
Motor and code-disc component include decelerating motor, code-disc, No. two shaft couplings, connecting plate and encoder；
Decelerating motor is fixed on connecting plate by motor shaft sleeve；
Connecting plate is installed on cavity right side wall；Encoder is installed on connecting plate and ipsilateral with code-disc；
Decelerating motor is connect by No.1 shaft coupling with optical filter box, for driving optical filter box to rotate；
Code-disc is connected with the deceleration motor by No. two shaft couplings, for cooperating with encoder to detect decelerating motor turned position letter
Breath；
The collimator bracket uses U-bracket；
No.1 optical collimator mounting hole and No. two optical collimator mounting grooves are relatively set on U-bracket；
The aperture of No.1 optical collimator mounting hole is greater than the diameter of No.1 optical collimator, and No.1 optical collimator is installed on by glue
In the No.1 optical collimator mounting hole；
No. two optical collimator mounting grooves are V-shaped groove, and when No. two optical collimators are placed in No. two optical collimator mounting grooves, are led to
It crosses pressing plate No. two optical collimators are fixed on U-bracket；
Cavity right side wall is to be obliquely installed, and when cavity is horizontally arranged, the angle between cavity right side wall and vertical plane is r；
The setting angle of photo-coupler, optical filter box and motor and code-disc component is in the angle r with the center line of cavity；
The value range of angle r is 7-10 degree.
2. a kind of optical attenuator based on monolithic circular filter according to claim 1, which is characterized in that the cavity
Inner surface be to be formed by blackening processing technology.
3. a kind of optical attenuator based on monolithic circular filter according to claim 1, which is characterized in that the circle
Optical filter is neutral-density filter.
4. a kind of optical attenuator based on monolithic circular filter according to claim 1, which is characterized in that the No.1
It is face contact between the right end and circular filter of shaft coupling and between locking nut and circular filter.
5. a kind of optical attenuator based on monolithic circular filter according to claim 4, which is characterized in that the No.1
Elastomeric pad is respectively equipped between the right end and circular filter of shaft coupling and between locking nut and circular filter.
6. a kind of optical attenuator based on monolithic circular filter according to claim 1, which is characterized in that the collimation
Device bracket is made of brass sheet material.
7. a kind of optical attenuator based on monolithic circular filter according to claim 1, which is characterized in that the motor
It further include the protection cap being connect with connecting plate with code-disc component, encoder and code-disc are respectively positioned between protection cap and connecting plate.
8. a kind of optical attenuator based on monolithic circular filter according to claim 1, which is characterized in that described light-blocking
Piece is Z-shaped；One end of light barrier is equipped with through-hole, and for light barrier to be installed to No.1 shaft coupling, the other end of light barrier is
Occlusion part, for blocking the light of photo-coupler output in light barrier rotary course.
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| CN201611028011.6A CN106444011B (en) | 2016-11-18 | 2016-11-18 | A kind of optical attenuator based on monolithic circular filter |
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| CN201611028011.6A CN106444011B (en) | 2016-11-18 | 2016-11-18 | A kind of optical attenuator based on monolithic circular filter |
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| CN106444011B true CN106444011B (en) | 2019-04-09 |
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| CN110174760A (en) * | 2019-05-27 | 2019-08-27 | 蚌埠学院 | A kind of optical attenuator that pad value is continuously adjustable |
Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4591231A (en) * | 1982-06-26 | 1986-05-27 | International Standard Electric Corporation | Variable optical attenuator |
| US4989938A (en) * | 1988-09-08 | 1991-02-05 | Light Control Systems, Inc. | Continuously variable fiber optic attenuator |
| JPH11194383A (en) * | 1997-12-26 | 1999-07-21 | Canon Electron Inc | Light quantity adjusting device |
| EP1072912A1 (en) * | 1999-07-30 | 2001-01-31 | SEIKOH GIKEN Co., Ltd. | Variable optical attenuator with linear translating mirror |
| CN1356587A (en) * | 2001-12-20 | 2002-07-03 | 华中科技大学 | Optical attenuator |
| TW516639U (en) * | 2001-11-21 | 2003-01-01 | Hon Hai Prec Ind Co Ltd | Adjustable optical attenuator |
| TW530951U (en) * | 2001-05-30 | 2003-05-01 | Hon Hai Prec Ind Co Ltd | Manual tunable optical attenuator |
| TW536642B (en) * | 2002-04-19 | 2003-06-11 | Ritek Corp | Optical switch |
| US6606446B1 (en) * | 1997-05-19 | 2003-08-12 | Jds Uniphase Corporation | Miniature variable attenuator |
| US6937809B1 (en) * | 2002-03-18 | 2005-08-30 | Alliance Fiber Optic Products, Inc. | Variable attenuator optical add/drop devices |
| JP2008275505A (en) * | 2007-05-01 | 2008-11-13 | Omron Corp | Positional dimension measuring device |
| CN202533605U (en) * | 2012-02-08 | 2012-11-14 | 福州通产光电技术有限公司 | Improved attenuator |
| CN202929292U (en) * | 2012-10-16 | 2013-05-08 | 深圳市新岸通讯技术有限公司 | Variable optical attenuator for free space optical communication |
| CN203117457U (en) * | 2013-03-01 | 2013-08-07 | 南京理工大学 | Optical fiber leading-out type interferometer laser light source system |
| CN103323943A (en) * | 2013-06-06 | 2013-09-25 | 珠海保税区光联通讯技术有限公司 | Adjustable optical filter |
| CN203324572U (en) * | 2013-07-25 | 2013-12-04 | 福州高意通讯有限公司 | Thermally tunable optical filter |
| CN103630974A (en) * | 2013-12-16 | 2014-03-12 | 中国电子科技集团公司第四十一研究所 | Linear type continuous variable optical attenuation unit |
| CN104914407A (en) * | 2015-05-20 | 2015-09-16 | 中国科学院深圳先进技术研究院 | Indoor positioning device and indoor positioning method |
| CN105866891A (en) * | 2016-05-16 | 2016-08-17 | 中国电子科技集团公司第四十研究所 | Two-way linear continuously adjustable light attenuation unit based on reciprocating lead screw |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW587709U (en) * | 2001-06-29 | 2004-05-11 | Hon Hai Prec Ind Co Ltd | Adjustable light attenuator with a stabilizing device |
| US6584271B2 (en) * | 2000-12-09 | 2003-06-24 | Alliance Fiber Optics Products, Inc. | Dual fiber variable optical attenuator |
| TW551503U (en) * | 2001-05-23 | 2003-09-01 | Hon Hai Prec Ind Co Ltd | Variable optical attenuators |
| US7466726B2 (en) * | 2003-10-14 | 2008-12-16 | Polaronyx, Inc. | Fast continuously wavelength tuning single frequency fiber laser using tunable polymer optical filters |
-
2016
- 2016-11-18 CN CN201611028011.6A patent/CN106444011B/en active Active
Patent Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4591231A (en) * | 1982-06-26 | 1986-05-27 | International Standard Electric Corporation | Variable optical attenuator |
| US4989938A (en) * | 1988-09-08 | 1991-02-05 | Light Control Systems, Inc. | Continuously variable fiber optic attenuator |
| US6606446B1 (en) * | 1997-05-19 | 2003-08-12 | Jds Uniphase Corporation | Miniature variable attenuator |
| JPH11194383A (en) * | 1997-12-26 | 1999-07-21 | Canon Electron Inc | Light quantity adjusting device |
| EP1072912A1 (en) * | 1999-07-30 | 2001-01-31 | SEIKOH GIKEN Co., Ltd. | Variable optical attenuator with linear translating mirror |
| TW530951U (en) * | 2001-05-30 | 2003-05-01 | Hon Hai Prec Ind Co Ltd | Manual tunable optical attenuator |
| TW516639U (en) * | 2001-11-21 | 2003-01-01 | Hon Hai Prec Ind Co Ltd | Adjustable optical attenuator |
| CN1356587A (en) * | 2001-12-20 | 2002-07-03 | 华中科技大学 | Optical attenuator |
| US6937809B1 (en) * | 2002-03-18 | 2005-08-30 | Alliance Fiber Optic Products, Inc. | Variable attenuator optical add/drop devices |
| TW536642B (en) * | 2002-04-19 | 2003-06-11 | Ritek Corp | Optical switch |
| JP2008275505A (en) * | 2007-05-01 | 2008-11-13 | Omron Corp | Positional dimension measuring device |
| CN202533605U (en) * | 2012-02-08 | 2012-11-14 | 福州通产光电技术有限公司 | Improved attenuator |
| CN202929292U (en) * | 2012-10-16 | 2013-05-08 | 深圳市新岸通讯技术有限公司 | Variable optical attenuator for free space optical communication |
| CN203117457U (en) * | 2013-03-01 | 2013-08-07 | 南京理工大学 | Optical fiber leading-out type interferometer laser light source system |
| CN103323943A (en) * | 2013-06-06 | 2013-09-25 | 珠海保税区光联通讯技术有限公司 | Adjustable optical filter |
| CN203324572U (en) * | 2013-07-25 | 2013-12-04 | 福州高意通讯有限公司 | Thermally tunable optical filter |
| CN103630974A (en) * | 2013-12-16 | 2014-03-12 | 中国电子科技集团公司第四十一研究所 | Linear type continuous variable optical attenuation unit |
| CN104914407A (en) * | 2015-05-20 | 2015-09-16 | 中国科学院深圳先进技术研究院 | Indoor positioning device and indoor positioning method |
| CN105866891A (en) * | 2016-05-16 | 2016-08-17 | 中国电子科技集团公司第四十研究所 | Two-way linear continuously adjustable light attenuation unit based on reciprocating lead screw |
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