CN107305287A - A kind of tunable optical filter and micro spectrometer - Google Patents
A kind of tunable optical filter and micro spectrometer Download PDFInfo
- Publication number
- CN107305287A CN107305287A CN201610259325.0A CN201610259325A CN107305287A CN 107305287 A CN107305287 A CN 107305287A CN 201610259325 A CN201610259325 A CN 201610259325A CN 107305287 A CN107305287 A CN 107305287A
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- Prior art keywords
- optical filter
- tunable optical
- variable
- fixed slit
- angle device
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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
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/0816—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements
- G02B26/0833—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The present invention relates to a kind of tunable optical filter, it is characterized in that input light is exported by collimater, by grating, light beam after diffraction is after a variable-angle device, pass through lens again, incided afterwards by a fixed slit on speculum, light beam is after reflection, fixed slit, lens, grating, collimater are sequentially passed through again and returns to output end, and the variable-angle device, which can be realized, allows the light of wavelength of needs to pass through fixed slit.The invention further relates to a kind of micro spectrometer, it is characterized in that input light is exported by collimater, by grating, light beam after diffraction is after a variable-angle device, pass through lens again, incided afterwards by a fixed slit on PD, the variable-angle device, which can be realized, allows the light of wavelength of needs to pass through fixed slit.The advantage of the invention is that simple in construction, easy to operate, stability is strong and not bandwidth limited.
Description
Technical field
The present invention relates to optical-fibre communications field and field of optical measurements, particularly a kind of tunable optical filter and micro spectrometer.
Background technology
Tunable optical filter is a kind of basic optical element, and it is essentially band logical mode filter, i.e., only allow specific wavelength signal to pass through, other wavelength signals are reflected away.It can apply to above and below the light path of the restructural in dwdm system to take/demultiplexer (ROADM) and light it is cross interconnected（OXC）The aspects such as system and sensing network.
At present, main tunable optic filter has F-P wave filters, Mach-Zehnder wave filter, electro-optical filter, grating mode filter and fiber Bragg grating filter etc..The filter curve of wherein F-P wave filters is Gaussian, and the reflected mirror filtering of filter filtering waveform of general grating beam splitting type is also Gaussian.Bandwidth is restricted, although and can also accomplish flat-head type by plating membrane meanses, difficulty is very big, and yield rate is low, and bandwidth is non-adjustable.
The content of the invention
The technical problem to be solved in the present invention is to provide the tunable optical filter and spectrometer that a kind of simple in construction, performance is stable.
In order to solve the above-mentioned technical problem, the technical scheme is that：
A kind of tunable optical filter, it is characterized in that input light is exported by collimater, by grating, light beam after diffraction is after a variable-angle device, pass through lens again, incided afterwards by a fixed slit on speculum, light beam is after reflection, fixed slit, lens, grating, collimater are sequentially passed through again and returns to output end, and the variable-angle device, which can be realized, allows the light of wavelength of needs to pass through fixed slit.
Further technical scheme is on the basis of above-mentioned technical proposal：
The tunable optical filter, the variable-angle device is rotatable speculum.
The tunable optical filter, the variable-angle device is the symmetrical rotatable angle of wedge block of a vertical angles.
The tunable optical filter, the speculum is MEMS.
The tunable optical filter, the movement of the angle of wedge block is driven by stepper motor.
Single single optical fiber calibrator structure is respectively adopted in the tunable optical filter, described input/output terminal.
The tunable optical filter, described input/output terminal uses circulator structures.
The tunable optical filter, the speculum is plane mirror.
The tunable optical filter, the speculum is reflecting prism.
A kind of micro spectrometer, it is characterised in that input light is exported by collimater, by grating, light beam after diffraction is after a variable-angle device, pass through lens again, incided afterwards by a fixed slit on PD, the variable-angle device, which can be realized, allows the light of wavelength of needs to pass through fixed slit.
Utstanding substantial characteristics and significant improvement of the present invention are that simple in construction, easy to operate, stability is strong and not bandwidth limited.
Brief description of the drawings
The embodiment to the present invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is the first structural representation of the invention.
Fig. 2 is second of structural representation of the invention.
Embodiment
With reference to the accompanying drawings and detailed description, the present invention will be further described.
A kind of tunable optical filter as shown in Figure 1, 2, it is characterized in that input light is exported by collimater, by grating, light beam after diffraction is after a variable-angle device, pass through lens again, incided afterwards by a fixed slit on speculum, light beam is after reflection, fixed slit, lens, grating, collimater are sequentially passed through again and returns to output end, and the variable-angle device, which can be realized, allows the light of wavelength of needs to pass through fixed slit.The variable-angle device is rotatable speculum.The variable-angle device is the symmetrical rotatable angle of wedge block of a vertical angles.The speculum is MEMS.The movement of the angle of wedge block is driven by stepper motor.Single single optical fiber calibrator structure is respectively adopted in described input/output terminal.Described input/output terminal uses circulator structures.The speculum is plane mirror.The speculum is reflecting prism.
A kind of micro spectrometer, it is characterised in that input light is exported by collimater, by grating, light beam after diffraction is after a variable-angle device, pass through lens again, incided afterwards by a fixed slit on PD, the variable-angle device, which can be realized, allows the light of wavelength of needs to pass through fixed slit.
Although specifically showing and describing the present invention with reference to preferred embodiment; but those skilled in the art should be understood that; do not departing from the spirit and scope of the present invention that appended claims are limited; the present invention is made a variety of changes in the form and details, is protection scope of the present invention.
Claims (10)
1. a kind of tunable optical filter, it is characterized in that input light is exported by collimater, by grating, light beam after diffraction is after a variable-angle device, pass through lens again, incided afterwards by a fixed slit on speculum, light beam is after reflection, fixed slit, lens, grating, collimater are sequentially passed through again and returns to output end, and the variable-angle device, which can be realized, allows the light of wavelength of needs to pass through fixed slit.
2. tunable optical filter according to claim 1, it is characterised in that the variable-angle device is rotatable speculum.
3. tunable optical filter according to claim 1, it is characterised in that the variable-angle device is the symmetrical rotatable angle of wedge block of a vertical angles.
4. tunable optical filter according to claim 2, it is characterised in that the speculum is MEMS.
5. tunable optical filter according to claim 3, it is characterised in that the movement of the angle of wedge block is driven by stepper motor.
6. according to any tunable optical filter of claim 1 to 5, it is characterised in that single single optical fiber calibrator structure is respectively adopted in described input/output terminal.
7. according to any tunable optical filter of claim 1 to 5, it is characterised in that described input/output terminal uses circulator structures.
8. according to any tunable optical filter of claim 1 to 5, it is characterised in that the speculum is plane mirror.
9. according to any tunable optical filter of claim 1 to 5, it is characterised in that the speculum is reflecting prism.
10. a kind of micro spectrometer, it is characterised in that input light is exported by collimater, by grating, light beam after diffraction is after a variable-angle device, pass through lens again, incided afterwards by a fixed slit on PD, the variable-angle device, which can be realized, allows the light of wavelength of needs to pass through fixed slit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610259325.0A CN107305287A (en) | 2016-04-25 | 2016-04-25 | A kind of tunable optical filter and micro spectrometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610259325.0A CN107305287A (en) | 2016-04-25 | 2016-04-25 | A kind of tunable optical filter and micro spectrometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107305287A true CN107305287A (en) | 2017-10-31 |
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| CN201610259325.0A Pending CN107305287A (en) | 2016-04-25 | 2016-04-25 | A kind of tunable optical filter and micro spectrometer |
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Citations (6)
| 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 |
| CN202615041U (en) * | 2011-09-13 | 2012-12-19 | 武汉朗睿科技有限公司 | Tunable optical filter of integrated angle sensor |
| CN202948203U (en) * | 2012-12-17 | 2013-05-22 | 福州高意通讯有限公司 | Bandwidth-adjustable flat-top type optical filter |
| CN103293698A (en) * | 2011-04-07 | 2013-09-11 | 奥托莱克斯公司 | Grating-based tunable filter |
| CN103364879A (en) * | 2012-03-30 | 2013-10-23 | 福州高意通讯有限公司 | A flat-top optical filter with adjustable bandwidth |
| CN204269973U (en) * | 2014-12-26 | 2015-04-15 | 福州高意通讯有限公司 | A kind of adjustable filter |
-
2016
- 2016-04-25 CN CN201610259325.0A patent/CN107305287A/en active Pending
Patent Citations (6)
| 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 |
| CN103293698A (en) * | 2011-04-07 | 2013-09-11 | 奥托莱克斯公司 | Grating-based tunable filter |
| CN202615041U (en) * | 2011-09-13 | 2012-12-19 | 武汉朗睿科技有限公司 | Tunable optical filter of integrated angle sensor |
| CN103364879A (en) * | 2012-03-30 | 2013-10-23 | 福州高意通讯有限公司 | A flat-top optical filter with adjustable bandwidth |
| CN202948203U (en) * | 2012-12-17 | 2013-05-22 | 福州高意通讯有限公司 | Bandwidth-adjustable flat-top type optical filter |
| CN204269973U (en) * | 2014-12-26 | 2015-04-15 | 福州高意通讯有限公司 | A kind of adjustable filter |
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Application publication date: 20171031 |
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