CN201096983Y - Grating light tuning filter - Google Patents
Grating light tuning filter Download PDFInfo
- Publication number
- CN201096983Y CN201096983Y CNU2007201217798U2007201217798U CN200720121779U CN201096983Y CN 201096983 Y CN201096983 Y CN 201096983Y CN U2007201217798U2007201217798 U CNU2007201217798U2007201217798 U CN U2007201217798U2007201217798U CN 200720121779 U CN200720121779 U CN 200720121779U CN 201096983 Y CN201096983 Y CN 201096983Y
- Authority
- CN
- China
- Prior art keywords
- grating
- catoptron
- light
- tunable filter
- grating type
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Mechanical Light Control Or Optical Switches (AREA)
Abstract
The utility model relates to an optical grating type electric wave filter with tunable light. The electric wave filter comprises at least a rotating reflecting mirror, a light beam shooting device, a light beam receiving device and a focalizing element. The utility model is characterized in that the electric wave filter also comprises an optical grate as well, wherein, light beams with different wave lengths shoot from the light beam shooting device is transformed into parallel light beams through the focalizing element and shoot into the optical grate, and then, light beams with an arbitrary wave length is selected to be reflected to the light beam receiving device through a rotating angle of the rotating reflecting mirror. The optical grating type electric wave filter has the advantages that the rotating reflecting mirror can receive light with different wave lengths through rotating different angles, and therefore, the tuning purpose is realized. The light path is easy and convenient to be tuned, and thus, the optical grating type electric wave filter is more suitable for being massively produced.
Description
Technical field
The utility model relates to a kind of optic tunable filter, relates in particular to a kind of optic tunable filter that utilizes grating.
Background technology
Optical filter is of a great variety, and structure is various, but roughly can be divided into three types by filtering principle: prism wave filter, diffraction grating wave filter and interference filter.The prism-type optical filter is an optically filtering device the earliest, and it is to utilize prism that the light of different wave length is had different refractivity, thereby makes the light of different frequency have different deflection angles, finally reaches the function of filtering.The prism-type wave filter has stronger peak transmittance, is glass prism owing to what adopt, so cheap.But because prism is a block elements, its abbe number is little, so the broader bandwidth of prism-type wave filter can not be used as narrow band filter, and volume is bigger, does not therefore generally adopt prism in optical fiber telecommunications system.The diffraction grating wave filter is when utilizing incident light to incide grating surface, each wavelength component different some diffraction in the space, thus different wavelengths of light is separated, realize filter function.Comprise various ways such as traditional diffraction grating form, fiber grating form and waveguide optical grating form.Interference filter is another kind of main optically filtering form, and ultimate principle is based on the Fabry-Perot interference cavity of multiple-beam interference, and tuning manner has electrooptical effect, thermo-optic effect, piezoelectric effect and acoustooptic effect etc.In conjunction with the MEMS technology, can constitute the diffraction and the interference filter of MEMS form, help miniaturization of devices and accurately control.
Summary of the invention
It is low, simple in structure that a purpose of the present utility model provides a kind of cost, stable performance, the grating type optic tunable filter that reliability is higher.
In order to reach as above purpose, the utility model grating type optic tunable filter comprises at least one rotatable catoptron, a beam launcher, a beam receiver, a concentrating element, it is characterized in that: also comprise a grating, wherein, multi-wavelength light beam from the beam launcher emission, be converted to parallel beam by concentrating element, inject grating, the back selects arbitrary wavelength light beam to reflex to beam receiver by the corner of described rotation catoptron.
Regulate for the ease of light path, also can comprise a prism, multi-wavelength light beam from the beam launcher emission, select arbitrary wavelength light beam reflection by the corner of rotatable catoptron, the back is converted to parallel beam by concentrating element, inject grating, returning by prismatic reflection in the back, is received by beam receiver.
In order to make its light path compactness, also can comprise a catoptron, parallel with rotatable catoptron, will select arbitrary wavelength light beam reflection back to be converted to parallel beam by the corner of rotatable catoptron and enter grating by concentrating element.
Wherein, catoptron becomes miter angle to fix with the incident beam direction.
Wherein, described concentrating element can be lens combination.
Wherein, described beam launcher and beam receiver can adopt two optical fiber structures, and an optical fiber is as beam launcher, and another optical fiber is as beam receiver.
Wherein, the spacing between the described pair of optical fiber can be regulated.
Advantage of the present utility model is: rotatable catoptron turns over the light that different angles can receive different wave length, thereby reaches tuning purpose.And the simple and convenient adjusting of this light path is fit to produce in batches more.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the index path of first embodiment of the utility model grating type optic tunable filter;
The index path of second embodiment of Fig. 2 the utility model grating type optic tunable filter;
Fig. 3 is the index path of the 3rd embodiment of the utility model optic tunable filter;
Fig. 4 is the index path of the 4th embodiment of the utility model optic tunable filter.
Embodiment
Show as Fig. 1, the utility model grating type optic tunable filter comprises rotatable catoptron 11, beam launcher 12, one beam receiver 13, one lens combination 14 and a grating 15, wherein, multi-wavelength light beam from beam launcher 12 emissions, scioptics group 14 is converted to parallel beam, parallel beam is radiated on the grating planar that becomes 90-θ (θ=46.56 are the BRAGG angle of grating) with lens 14 optical axises, parallel beam produces chromatic dispersion through grating 15 diffraction, dispersed light passes through grating 15 secondary diffraction after being reflected by rotatable catoptron 11 again, chromatic dispersion, select the light of satisfactory wavelength to return by the rotation of rotating catoptron 11, receive by beam receiver 13 through original optical path.Rotation catoptron 11 turns over different angle beam receivers 13 and can receive the light of different wave length, thereby reaches tuning purpose.
In the foregoing description, beam launcher 12, a beam receiver 13 can adopt two optical fiber pigtail forms, and the input optical fibre that is positioned on lens combination 14 focal planes is similar to pointolite.
The index path of second embodiment of Fig. 2 the utility model grating type optic tunable filter, as shown in Figure 2: the utility model grating type optic tunable filter comprises rotatable catoptron 11, beam launcher 12, one beam receiver 13, one lens combination 14, one grating 15 and prism 16, wherein, multi-wavelength light beam from beam launcher 12 emissions, select the light beam of required wavelength by rotatable catoptron 11, scioptics group 14 is converted to parallel beam, parallel beam is radiated on the grating planar that becomes 90-θ (θ=46.56 are the BRAGG angle of grating) with lens 14 optical axises, parallel beam produces chromatic dispersion through grating 15 diffraction, dispersed light passes through grating 15 secondary diffraction after being reflected by the reflecting surface 161 of prism 16 again, chromatic dispersion, select the light of satisfactory wavelength to return, receive by beam receiver 13 through original optical path.Rotation catoptron 11 turns over different angle beam receivers 13 and can receive the light of different wave length, thereby reaches tuning purpose.
In the present embodiment, described beam launcher 12 and beam receiver 13 can adopt two optical fiber structures, and an optical fiber is as beam launcher 12, and another optical fiber is as beam receiver 13.
The index path of the 3rd embodiment of Fig. 3 the utility model grating type optic tunable filter, as shown in Figure 3: the utility model grating type optic tunable filter comprises rotatable catoptron 11, beam launcher 12, one beam receiver 13, one lens combination 14, one grating 15, a prism 16 and a catoptron 17, wherein, multi-wavelength light beam from beam launcher 12 emissions, select the light beam of required wavelength by rotatable catoptron 11, after catoptron 17 reflections, scioptics group 14 is converted to parallel beam, parallel beam is radiated on the grating planar that becomes 90-θ (θ=46.56 are the BRAGG angle of grating) with lens 14 optical axises, parallel beam produces chromatic dispersion through grating 15 diffraction, dispersed light passes through grating 15 secondary diffraction after being reflected by the reflecting surface 161 of prism 16 again, chromatic dispersion, select the light of satisfactory wavelength to return, receive by beam receiver 13 through original optical path.Rotation catoptron 11 turns over different angle beam receivers 13 and can receive the light of different wave length, thereby reaches tuning purpose.
In the present embodiment, described beam launcher 12 and beam receiver 13 can adopt two optical fiber structures, and an optical fiber is as beam launcher 12, and another optical fiber is as beam receiver 13.
Fig. 4 is the index path of the 4th embodiment of the utility model grating type optic tunable filter, as shown in Figure 4: the utility model grating type optic tunable filter comprises rotatable catoptron 11, double-fiber collimator 12 comprises output optical fibre 121 and receives optical fiber 122, one lens combination 14, one grating 15, a prism 16 and a catoptron 17, wherein, multi-wavelength light beam from output optical fibre 121 emissions, select the light beam of required wavelength by rotatable catoptron 11, after catoptron 17 reflections, scioptics group 14 is converted to parallel beam, parallel beam is radiated on the grating planar that becomes 90-θ (θ=46.56 are the BRAGG angle of grating) with lens 14 optical axises, parallel beam produces chromatic dispersion through grating 15 diffraction, dispersed light passes through grating 15 secondary diffraction after being reflected by the reflecting surface 161 of prism 16 again, chromatic dispersion, select the light of satisfactory wavelength to return, receive by beam receiver 13 through original optical path.Rotation catoptron 11 turns over different angle reception optical fiber 122 can receive the light of different wave length, thereby reaches tuning purpose.
As above among the embodiment, between catoptron 17 and lens combination 14, also comprise a negative lens element 141, adopt the collimated light input like this, relative simple to the requirement of catoptron 17 with control.
Advantage of the present utility model is: rotatable catoptron 11 turns over the light that different angles can receive different wave length, thereby reaches tuning purpose.And the simple and convenient adjusting of this light path is fit to produce in batches more.
The above person is the utility model most preferred embodiment only, is not to be used to limit scope of the present utility model, and all equivalences of being done according to the utility model claim change or modify, and are all the utility model and contain.
Claims (7)
1. grating type optic tunable filter, comprise at least one rotatable catoptron, a beam launcher, a beam receiver, a concentrating element, it is characterized in that: also comprise a grating, wherein, multi-wavelength light beam from the beam launcher emission, be converted to parallel beam by concentrating element, inject grating, the back selects arbitrary wavelength light beam to reflex to beam receiver by the corner of described rotation catoptron.
2. grating type optic tunable filter as claimed in claim 1, it is characterized in that: also can comprise a prism, multi-wavelength light beam from the beam launcher emission, select arbitrary wavelength light beam reflection by the corner of rotatable catoptron, the back is converted to parallel beam by concentrating element, inject grating, returning by prismatic reflection in the back, is received by beam receiver.
3. grating type optic tunable filter as claimed in claim 1, it is characterized in that: can comprise that also a catoptron is parallel with rotatable catoptron, will select arbitrary wavelength light beam reflection back to be converted to parallel beam by the corner of rotatable catoptron and enter grating by concentrating element.
4. grating type optic tunable filter as claimed in claim 3 is characterized in that: described catoptron becomes miter angle to fix with the incident beam direction.
5. grating type optic tunable filter as claimed in claim 1 is characterized in that: described concentrating element can be lens combination.
6. grating type optic tunable filter as claimed in claim 1 is characterized in that: described beam launcher and beam receiver can adopt two optical fiber structures, and an optical fiber is as beam launcher, and another optical fiber is as beam receiver.
7. grating type optic tunable filter as claimed in claim 6 is characterized in that: the spacing between the described pair of optical fiber can be regulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201217798U2007201217798U CN201096983Y (en) | 2007-07-27 | 2007-07-27 | Grating light tuning filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201217798U2007201217798U CN201096983Y (en) | 2007-07-27 | 2007-07-27 | Grating light tuning filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201096983Y true CN201096983Y (en) | 2008-08-06 |
Family
ID=39924036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201217798U2007201217798U Expired - Fee Related CN201096983Y (en) | 2007-07-27 | 2007-07-27 | Grating light tuning filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201096983Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102033312A (en) * | 2010-11-09 | 2011-04-27 | 武汉光迅科技股份有限公司 | Tunable optical filter based on MEMS (micro electro mechanical system) technology |
| CN102323668A (en) * | 2011-09-13 | 2012-01-18 | 武汉朗睿科技有限公司 | Tunable optical filter integrated with angle sensor |
| CN102608708A (en) * | 2012-03-05 | 2012-07-25 | 华中科技大学 | Wavelength-adjustable optical filter |
| CN103293698A (en) * | 2011-04-07 | 2013-09-11 | 奥托莱克斯公司 | Grating-based tunable filter |
| CN103684616A (en) * | 2013-12-25 | 2014-03-26 | 武汉电信器件有限公司 | Adjustable photoreceiver structure |
| CN105866940A (en) * | 2016-05-11 | 2016-08-17 | 昂纳信息技术（深圳）有限公司 | Optical filter with adjustable width and wavelength |
| CN108732744A (en) * | 2018-05-07 | 2018-11-02 | 王念 | A kind of MEMS tunable optical filters |
| CN109373933A (en) * | 2018-11-20 | 2019-02-22 | 武汉光迅科技股份有限公司 | A kind of detection device and method of diffraction grating verticality |
| CN113406789A (en) * | 2020-03-16 | 2021-09-17 | 珠海保税区光联通讯技术有限公司 | Tunable optical filter |
-
2007
- 2007-07-27 CN CNU2007201217798U2007201217798U patent/CN201096983Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102033312A (en) * | 2010-11-09 | 2011-04-27 | 武汉光迅科技股份有限公司 | Tunable optical filter based on MEMS (micro electro mechanical system) technology |
| CN102033312B (en) * | 2010-11-09 | 2013-01-09 | 武汉光迅科技股份有限公司 | Tunable optical filter based on MEMS (micro electro mechanical system) technology |
| CN103293698A (en) * | 2011-04-07 | 2013-09-11 | 奥托莱克斯公司 | Grating-based tunable filter |
| CN103293698B (en) * | 2011-04-07 | 2016-08-03 | 奥托莱克斯公司 | A kind of tunable filter based on grating |
| CN102323668A (en) * | 2011-09-13 | 2012-01-18 | 武汉朗睿科技有限公司 | Tunable optical filter integrated with angle sensor |
| CN102608708A (en) * | 2012-03-05 | 2012-07-25 | 华中科技大学 | Wavelength-adjustable optical filter |
| CN103684616A (en) * | 2013-12-25 | 2014-03-26 | 武汉电信器件有限公司 | Adjustable photoreceiver structure |
| CN105866940A (en) * | 2016-05-11 | 2016-08-17 | 昂纳信息技术（深圳）有限公司 | Optical filter with adjustable width and wavelength |
| CN105866940B (en) * | 2016-05-11 | 2018-11-27 | 昂纳信息技术（深圳）有限公司 | The optical filter of one bandwidth and Wavelength tunable |
| CN108732744A (en) * | 2018-05-07 | 2018-11-02 | 王念 | A kind of MEMS tunable optical filters |
| CN109373933A (en) * | 2018-11-20 | 2019-02-22 | 武汉光迅科技股份有限公司 | A kind of detection device and method of diffraction grating verticality |
| CN113406789A (en) * | 2020-03-16 | 2021-09-17 | 珠海保税区光联通讯技术有限公司 | Tunable optical filter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201096983Y (en) | Grating light tuning filter | |
| USRE43965E1 (en) | Compensating for chromatic dispersion in optical fibers | |
| US6519269B1 (en) | Wavelength tuneable laser source | |
| US7460302B2 (en) | Dynamic optical devices | |
| US7636376B2 (en) | Method and apparatus for wavelength tuning laser diodes | |
| US6751373B2 (en) | Wavelength division multiplexing with narrow band reflective filters | |
| US6934069B2 (en) | Chromatic dispersion compensation device having an array of micromirrors | |
| US20150346480A1 (en) | Grating-type tunable filter | |
| CN103364879A (en) | A flat-top optical filter with adjustable bandwidth | |
| CA2557180A1 (en) | Method and apparatus for a bragg grating tunable filter | |
| US8103138B2 (en) | Tunable filter | |
| CN203535312U (en) | Grating-type optical tunable filter | |
| CN102495466A (en) | Multichannel optical quick tunable filter | |
| US20120224181A1 (en) | Wide-Band/High-Resolution Tunable Spectral Filter | |
| JP2000299521A (en) | Single dimension self-aligned retroreflecting optical system for wavelength filtering | |
| CN113777712B (en) | Programmable spectral filter based on tilted grating | |
| US6560249B1 (en) | Laser source with integral filtering of the amplified spontaneous emission | |
| US6856726B2 (en) | Light waveguide with integrated input aperture for an optical spectrometer | |
| CN114089481A (en) | Novel wavelength division multiplexer adopting optical waveguide integration technology | |
| CN206611012U (en) | A kind of tunable laser | |
| CN112255814A (en) | Narrow-band adjustable filter | |
| US6892000B2 (en) | Tunable filter | |
| CN213715621U (en) | Narrow-band adjustable filter | |
| CN219179636U (en) | Optical filter structure and optical filter | |
| CN114050470B (en) | Wavelength control method of rare earth crystal infrared laser |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Wu Junying Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: O-Net Information Technology (Shenzhen) Co.,Ltd. Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: O-Net Information Technology (Shenzhen) Co.,Ltd. Document name: Notification of Termination of Patent Right |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080806 Termination date: 20140727 |
|
| EXPY | Termination of patent right or utility model |