CN103684616A - Adjustable photoreceiver structure - Google Patents
Adjustable photoreceiver structure Download PDFInfo
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- CN103684616A CN103684616A CN201310723061.6A CN201310723061A CN103684616A CN 103684616 A CN103684616 A CN 103684616A CN 201310723061 A CN201310723061 A CN 201310723061A CN 103684616 A CN103684616 A CN 103684616A
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Abstract
The invention provides an adjustable photoreceiver structure which comprises a diffraction grating, an MEMS reflector, a Zig-Zag multi-wavelength filter and an optical detector, wherein the diffraction grating is located in the position capable of irradiating the MEMS reflector, so that the diffraction grating spatially separates the input light of different wavelengths and projects same onto the MEMS reflector; the MEMS reflector is located in a position irradiating the Zig-Zag multi-wavelength filter, and can rotate the angle of reflected light when reflecting light; the Zig-Zag multi-wavelength filter filters different wavelengths of incident light, and collects the filtered light to a light output end and transmits same in the optical detector. By means of the above-mentioned structure or a construction combination thereof, the adjustable photoreceiver structure is achieved, so that high-speed switching among different wavelengths can be achieved, the incident light spectrum can be shaped, and good effects of low cost, compact structure, small size and high degree of isolation between the passbands can be achieved.
Description
Technical field
The present invention relates to optical communication equipment field, espespecially a kind of structure of tunable optical receiver.
Background technology
For significantly improving the capacity of optical access network, need badly and adopt optical access network TWDM-PON system of future generation to carry out smooth upgrade to existing Access Network, tunable optical receiver is one of core light electronic device of this system, also it is researched and developed success and realizes commercialization, the bottleneck problem that high-performance Access Network long term device relies on external import be can greatly change, production domesticization and the autonomous innovation of optical access network correlation technique of future generation realized.
At present, the scheme that realizes tunable optical receiver has multiple, and as the thermal tuning light receiving method of multilayer dielectric film, miniature motor drives method of filter plate rotated detection etc.Thermal tuning optical receiver based on multilayer dielectric film is the principle based on multilayer dielectric film F-P chamber, and its passband spectrum is very narrow, very high to the required precision of input light wavelength, and interchannel isolation is lower.Based on miniature motor, drive the method for filter plate rotated detection to exist device volume excessive, the deficiency that power consumption is higher.
Summary of the invention
For solving the problems of the technologies described above, main purpose of the present invention is to provide a kind of structure of tunable optical receiver, it adopts MEMS speculum and diffraction grating to realize light wavelength spatially to separate, recycling Zig-Zag type multiple wavelengths filter is realized the light of different wave length is focused in a photo-detector, thereby it is high to have reached between the compact conformation, passband of this tunable optical receiver isolation, be applicable to the optical communication system application that TWDM-PON etc. needs tunable optical to survey.
For reaching above-mentioned purpose, the right technical scheme of the present invention is: a kind of structure of tunable optical receiver, comprise diffraction grating, MEMS speculum, Zig-Zag type multiple wavelengths filter and photo-detector, wherein: this diffraction grating is located at the position that can irradiate this MEMS speculum, making it described diffraction grating spatially separates the input light of different wave length and is projeced on described MEMS speculum; This MEMS speculum is located at the position of irradiating on this Zig-Zag type multiple wavelengths filter, described MEMS speculum also rotatable reverberation angle when reverberation; This Zig-Zag type multiple wavelengths filter carries out filtering to different wave length incident light, and filtered light is collected bright dipping end and incided in photo-detector.
Preferred in the present embodiment, described Zig-Zag type multiple wavelengths filter has filter plate.
Preferred in the present embodiment, described filter plate has 4 at least, and the position that it arranges is respectively different.
Preferred in the present embodiment, when the transmitted light of described diffraction grating arrives MEMS speculum, along with the difference of MEMS reflection angle, reflex to respectively on the described filter plate of setting.
Preferred in the present embodiment, the structure of described tunable optical receiver further comprises some lens, and described lens are separately positioned on this Zig-Zag mode filter incident light front end always, realize by this catoptrical collimation of difference.
Preferred in the present embodiment, described Zig-Zag mode filter also comprises other filter plate, the inside of its Zig-Zag mode filter is reflected between described MEMS speculum and other filter plate by the transmitted light of filter plate, make all transmitted lights all enter into same bright dipping end, incide photo-detector.
Compared with prior art, its useful effect is in the present invention: the one, and the high speed having realized between different wave length is switched, and also can carry out shaping to incident light spectrum; The 2nd, the structure low cost of manufacture of this tunable optical receiver, its compact conformation volume are little, isolation is high between passband, are applicable to the generally application that TWDM-PON etc. needs the optical communication system that tunable optical surveys.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is the use status architecture schematic diagram of the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Refer to Fig. 1 and in conjunction with shown in consulting, the invention provides a kind of structure of tunable optical receiver, comprise diffraction grating 1, MEMS speculum 2, Zig-Zag type multiple wavelengths filter 3 and photo-detector 4, wherein:
This diffraction grating 1 can spatially separate the input light of different wave length, utilizes light different principle of refraction angle in diffraction grating 1 of different wave length.For example, setting input light has four wavelength, is respectively λ 1 ~ λ 4, and when being incident in this diffraction grating 1, the light of λ 1 ~ λ 4 can be along different angles transmission, thereby has spatially realized wave length beam splitting;
The major function of this MEMS speculum 2 is reverberation, certainly, MEMS also can realize the rotation to reverberation angle, when the transmitted light of diffraction grating 1 arrives MEMS speculum 2, difference along with MEMS reflection angle, its filter plate that reflexes to Zig-Zag type multiple wavelengths filter 3 is also different, reflexes on the different filter plates of this filter 3, so scioptics 5 are realized the catoptrical collimation of difference.
The major function of this Zig-Zag type multiple wavelengths filter 3 is that different wave length incident light is carried out filtering and filtered light is collected to bright dipping end.In the inside of Zig-Zag mode filter, the transmitted light by filter plate reflects between speculum 6 and other filter plate (sign), makes all transmitted lights all enter into same bright dipping end, finally incides in photo-detector 4.
The detection that this photo-detector 4 is realized light signal, is converted into current signal by the light signal of different wave length, and the operating rate of tunable optical receiver is determined by the speed of photo-detector 4.Photo-detector 4 can be realized wide spectrum optical and survey, the flashlight in detectable all incident light spectral regions.When needs are transformed into when another wavelength is surveyed, as being switched to λ 3 wavelength from current λ 4 wavelength, tunable optical receiver can be controlled the angle of MEMS speculum 2, reverberation is irradiated on the filter plate of Zig-Zag mode filter 3 corresponding wavelength, as shown in Figure 2.The current signal receiving at photo-detector 4 places is the entrained light signal of incident light of this wavelength.
Structure and the function thereof of this tunable optical receiver in sum, its object be to realize to the selectivity of input optical wavelength survey, the wave-length coverage of passband is adjustable and it is high to reach between passband isolation, make it the effect that passband is Gaussian spectrum, and be applied to various needs in optical communication system that tunable optical surveys.
Research shows, regulating the speed in millisecond magnitude of MEMS speculum 3, the time that is to say the tunable optical receiver switching different wave length in the embodiment of the present invention is also a millisecond magnitude, switch speed with respect between the different wave length of the thermal tuning light receiving method of multilayer dielectric film and the scheme of miniature motor drive filter plate rotated detection is all for second-time, and its switch speed is faster.
In embodiments of the present invention, the light of described 1 pair of different wave length of diffraction grating carries out after the beam splitting of space, and the light of different wave length is Gaussian in passband, and the light isolation between different wave length only has 15dB conventionally, is difficult to meet system requirements.Yet the transmitted spectrum of filter is passband flat type in described Zig-Zag mode filter 3, the light isolation between passband and non-passband wavelength can reach 30dB conventionally.Therefore, incident light, after this diffraction grating 1 and filter, both can have been realized the spectrum of Gaussian in passband, can realize high-isolation between different wave length light signal again.
To sum up, the structure of the tunable optical receiver of mentioning based on the present invention, the high speed that both can realize between different wave length is switched, and also can carry out shaping to incident light spectrum, reaches required designing requirement.
In sum, only, for the present invention's preferred embodiment, with this, do not limit protection scope of the present invention, all equivalences of doing according to the scope of the claims of the present invention and description change and modify, within being all the scope that patent of the present invention contains.
Claims (6)
1. the structure of a tunable optical receiver, comprise diffraction grating, MEMS speculum, Zig-Zag type multiple wavelengths filter and photo-detector, it is characterized in that: this diffraction grating is located at the position that can irradiate this MEMS speculum, make it described diffraction grating and the input light of different wave length is spatially separated and be projeced on described MEMS speculum; This MEMS speculum is located at the position of irradiating on this Zig-Zag type multiple wavelengths filter, described MEMS speculum also rotatable reverberation angle when reverberation; This Zig-Zag type multiple wavelengths filter carries out filtering to different wave length incident light, and filtered light is collected bright dipping end and incided in photo-detector.
2. the structure of tunable optical receiver as claimed in claim 1, is characterized in that: described Zig-Zag type multiple wavelengths filter has filter plate.
3. the structure of tunable optical receiver as claimed in claim 2, is characterized in that: described filter plate has 4 at least, and the position that it arranges is respectively different.
4. the structure of tunable optical receiver as claimed in claim 3, is characterized in that: when the transmitted light of described diffraction grating arrives MEMS speculum, along with the difference of MEMS reflection angle, reflex to respectively on the described filter plate of setting.
5. the structure of tunable optical receiver as claimed in claim 4, it is characterized in that: the structure of described tunable optical receiver further comprises some lens, described lens are separately positioned on this Zig-Zag mode filter incident light front end always, realize by this catoptrical collimation of difference.
6. the structure of tunable optical receiver as claimed in claim 5, it is characterized in that: described Zig-Zag mode filter also comprises other filter plate, the inside of its Zig-Zag mode filter is reflected between described MEMS speculum and other filter plate by the transmitted light of filter plate, make all transmitted lights all enter into same bright dipping end, incide photo-detector.
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| CN201310723061.6A CN103684616A (en) | 2013-12-25 | 2013-12-25 | Adjustable photoreceiver structure |
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| CN201310723061.6A CN103684616A (en) | 2013-12-25 | 2013-12-25 | Adjustable photoreceiver structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105993140A (en) * | 2016-03-23 | 2016-10-05 | 索尔思光电（成都）有限公司 | Adjustable receiver including MEMS reflector,transceiver and module and method of manufacturing the same |
| CN106772814A (en) * | 2016-12-20 | 2017-05-31 | 武汉邮电科学研究院 | A kind of tunable optical filter |
| CN113721324A (en) * | 2021-08-30 | 2021-11-30 | 湖南工学院 | Light adjustable and wavelength division multiplexing integrated structure |
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| CN102970073A (en) * | 2011-09-01 | 2013-03-13 | 昂纳信息技术（深圳）有限公司 | Device and system for optical performance monitoring |
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| CN201096983Y (en) * | 2007-07-27 | 2008-08-06 | 昂纳信息技术（深圳）有限公司 | Grating light tuning filter |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105993140A (en) * | 2016-03-23 | 2016-10-05 | 索尔思光电（成都）有限公司 | Adjustable receiver including MEMS reflector,transceiver and module and method of manufacturing the same |
| WO2017161519A1 (en) * | 2016-03-23 | 2017-09-28 | Source Photonics (Chengdu) Co., Ltd. | Tunable receiver including microelectromechanical (mems) mirrors, a transceiver or module comprising the same, and methods of making and using the same |
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| CN105993140B (en) * | 2016-03-23 | 2018-07-06 | 索尔思光电（成都）有限公司 | A kind of light or photelectric receiver, optical module and production and preparation method thereof |
| CN106772814A (en) * | 2016-12-20 | 2017-05-31 | 武汉邮电科学研究院 | A kind of tunable optical filter |
| CN113721324A (en) * | 2021-08-30 | 2021-11-30 | 湖南工学院 | Light adjustable and wavelength division multiplexing integrated structure |
| CN113721324B (en) * | 2021-08-30 | 2023-11-10 | 湖南工学院 | Optical tunable and wavelength division multiplexing integrated structure |
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