CN103197453B - A kind of wavelength blocker based on liquid crystal over silicon technology and wavelength blocking system - Google Patents
A kind of wavelength blocker based on liquid crystal over silicon technology and wavelength blocking system Download PDFInfo
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- CN103197453B CN103197453B CN201310137569.8A CN201310137569A CN103197453B CN 103197453 B CN103197453 B CN 103197453B CN 201310137569 A CN201310137569 A CN 201310137569A CN 103197453 B CN103197453 B CN 103197453B
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 40
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 26
- 239000010703 silicon Substances 0.000 title claims abstract description 26
- 238000005516 engineering process Methods 0.000 title claims abstract description 18
- 230000000903 blocking effect Effects 0.000 title claims abstract description 10
- 239000013078 crystal Substances 0.000 claims description 7
- 230000000295 complement effect Effects 0.000 claims description 5
- 229910044991 metal oxide Inorganic materials 0.000 claims description 5
- 150000004706 metal oxides Chemical class 0.000 claims description 5
- 239000004065 semiconductor Substances 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000013016 damping Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
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Abstract
The present invention discloses a kind of wavelength blocker based on liquid crystal over silicon technology and wavelength blocking system.On the one hand, a kind of wavelength blocker based on liquid crystal over silicon technology, comprise the circulator, linearly polarized light generator and the grating that set gradually, the focus lens group set gradually, liquid crystal over silicon chip and control circuit, focus lens group is positioned at one end of grating.On the other hand, the invention also discloses a kind of wavelength blocking system.The element that one aspect of the present invention light path uses is few, because the structure of liquid crystal over silicon chip is relatively simple, price is put down suitable, can with same a slice liquid crystal chip and a light path system, make mutually independently multiple wavelength blocker, and production cost is low only has 1/3 ~ 1/5 of other similar device; The change of channel frequence and frequency span is realized on the other hand by the control circuit controlled wherein.
Description
Technical field
The present invention relates to a kind of optical communication equipment, more particularly, particularly a kind of wavelength blocker based on liquid crystal over silicon technology and wavelength blocking system.
Background technology
The high speed development of optical communication network, to the performance of optical communication equipment module, reliability requirement is more and more higher, and equipment cost and operating cost require more and more lower, require changeable channel frequency and frequency span.But existing equipment does not have changeable channel frequency and frequency span on the one hand, exist on the other hand and cause equipment price expensive because components and parts in light path more.Therefore, a kind of novel wavelength blocker of design and system is needed.
Summary of the invention
The first object of the present invention is do not have changeable channel frequency and frequency span on the one hand in prior art, exists on the other hand because of the many technical matterss of components and parts in light path, provides a kind of wavelength blocker based on liquid crystal over silicon technology.
The second object of the present invention is to provide a kind of wavelength blocking system according to the above-mentioned wavelength blocker based on liquid crystal over silicon technology composition.
In order to reach above-mentioned first object, the technical solution used in the present invention is as follows:
Based on a wavelength blocker for liquid crystal over silicon technology, comprise the circulator, linearly polarized light generator and the grating that set gradually, and the focus lens group set gradually, liquid crystal over silicon chip and control circuit, described focus lens group is positioned at one end of grating.
Preferably, described focus lens group is the post lens combination that one direction focuses on.
Preferably, described linearly polarized light generator comprises the standard value device, birefringece crystal and the half-wave plate that set gradually, and described accurate value device is positioned at one end of circulator.
Preferably, described liquid crystal over silicon chip comprises the flat liquid crystal, reflective film layer and the complementary metal oxide semiconductor (CMOS) that are set in turn in, and described flat liquid crystal is positioned at one end of focus lens group.
Preferably, described reflective film layer overlaps with the focal plane of focus lens group.
In order to reach above-mentioned second object, the technical solution used in the present invention is as follows:
According to a wavelength blocking system for the above-mentioned wavelength blocker based on liquid crystal over silicon technology composition, wherein: described wavelength blocker is at least two, and described at least two wavelength blockers are connected by coupling mechanism successively.
Compared with prior art, the invention has the advantages that: the element on the one hand light path used is few, because the structure of liquid crystal over silicon chip is relatively simple, price is put down suitable, can with same a slice liquid crystal chip and a light path system, make mutually independently multiple wavelength blocker, and production cost is low only has 1/3 ~ 1/5 of other similar device; The change of channel frequence and frequency span can be realized on the other hand by the control circuit controlled wherein; The system of wavelength blocker composition can realize the wavelength-selective switches function of dynamic restructuring multichannel wavelength simultaneously.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is the structural drawing of the wavelength blocker based on liquid crystal over silicon technology of the present invention.
Description of reference numerals:
1, flat liquid crystal, 2, reflective film layer, 3, complementary metal oxide semiconductor (CMOS), 4, control circuit, 5, grating, 6, focus lens group, 7, circulator, 8, accurate value device, 9, birefringece crystal, 10, half-wave plate.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Consult shown in Fig. 1, a kind of wavelength blocker based on liquid crystal over silicon technology provided by the invention, comprise the circulator 7, linearly polarized light generator and the grating 5 that set gradually, and, the focus lens group 6 set gradually, liquid crystal over silicon chip and control circuit 4(and COMS control circuit), wherein, focus lens group 6 is positioned at one end of grating 5
Preferably, focus lens group 6 is post lens combination that one direction focuses on, and linearly polarized light generator comprises the standard value device 8, birefringece crystal 9 and the half-wave plate 10 that set gradually, and accurate value device 8 is positioned at one end of circulator 7.Liquid crystal over silicon chip comprises the flat liquid crystal 1, reflective film layer 2 and the complementary metal oxide semiconductor (CMOS) (i.e. COMS) 3 that set gradually, and flat liquid crystal 1 is positioned at one end of focus lens group 6.Like this, the passage of light wave is formed by the control of complementary metal oxide semiconductor (CMOS) 3, and flat liquid crystal 1 inside is without the need for the channel spacing of light wave, and therefore cost is low, and the frequency of passage and bandwidth adjustable arbitrarily.And principle of the present invention is as follows:
Incident ray (wavelength coverage is generally 1527nm ~ 1567nm) is by after the accurate value of standard value device 8 (parallel ray beam), enter birefringece crystal 9 and half-wave plate 10 produces horizontal direction polarized light, incide grating 5, produce the spectrum by frequency permutation, namely wavelength separated is achieved, then focus on the focal plane of focus lens group 6 of cylindricality, and overlap with the focal plane of focus lens group 6 due to the reflective film layer 2 be provided with after flat liquid crystal 1, polarized light is by the reflective film layer 2 after vertical incidence flat liquid crystal 1 after cylindrical focusing lens group 6 and reflected.And the plane of flat liquid crystal 1 has up to a million pixels, all pixels control by the COMS control circuit 4 after reflective film layer 2, now, voltage by control COMS control circuit 4 can become the polarized light 90-degree rotation of horizontal direction the polarized light of vertical direction, when entering half-wave plate 10, birefringece crystal 9 along the reflection of former road, be refracted downwards, just can not enter in accurate value device 8.Meanwhile, the polarized light of horizontal direction also can be allowed to keep polarization direction to reflex to half-wave plate 10, birefringece crystal 9 along former road by the voltage of control COMS control circuit 4, then enter accurate value device 8.Like this, namely reach and allow the polarized light of horizontal direction be received, the object that the polarized light of vertical direction can not be received, and use this principle, in the plane of flat liquid crystal 1, the light wave of incidence (1527nm ~ 1567nm) can be marked off multiple channel.And controlled after light wave reflected along former road by reflective film floor 2, finally received the lightwave signal decomposing with circulator 7 and export after controlling by standard value device 8.Therefore, the voltage of control COMS control circuit 4 just can produce to polarized light the blocking effect that varies in size, and its damping capacity can reach 0.5-40dB, namely can be considered light path switch.
And according to above-mentioned principle, a wavelength blocking system can be formed, wherein: system comprises at least two wavelength blockers, and at least two wavelength blockers are connected by coupling mechanism successively.This coupling mechanism can adopt the device had in the optical path as light splitting or conjunction light function of the prior art.So namely, the wavelength-selective switches (WSS) of 1x2 or 1xn can be formed, and by controlling the voltage of control circuit, on demand channel and passage are opened or closed, so just achieve the function of the wavelength-selective switches of the dynamic restructuring multichannel of wavelength-selective switches (WSS).And wavelength-selective switches (WSS) has and can realize being bi-directionally connected of any direction, filter with low insertion loss transmits, any wavelength to any light path, luminous power evenly, and the advantage such as wavelength cross connection utilization.
Although describe embodiments of the present invention by reference to the accompanying drawings; but patent owner can make various distortion or amendment within the scope of the appended claims; as long as be no more than the protection domain described by claim of the present invention, all should within protection scope of the present invention.
Claims (6)
1. the wavelength blocker based on liquid crystal over silicon technology, it is characterized in that: comprise the circulator (7), linearly polarized light generator and the grating (5) that set gradually, and, the focus lens group (6) set gradually, liquid crystal over silicon chip and control circuit (4), described focus lens group (6) is positioned at one end of grating (5).
2. the wavelength blocker based on liquid crystal over silicon technology according to claim 1, is characterized in that: described focus lens group (6) is the post lens combination that one direction focuses on.
3. the wavelength blocker based on liquid crystal over silicon technology according to claim 2, it is characterized in that: described linearly polarized light generator comprises the standard value device (8), birefringece crystal (9) and the half-wave plate (10) that set gradually, and described accurate value device (8) is positioned at one end of circulator (7).
4. the wavelength blocker based on liquid crystal over silicon technology according to Claims 2 or 3, it is characterized in that: described liquid crystal over silicon chip comprises the flat liquid crystal (1), reflective film layer (2) and the complementary metal oxide semiconductor (CMOS) (3) that set gradually, and described flat liquid crystal (1) is positioned at one end of focus lens group (6).
5. the wavelength blocker based on liquid crystal over silicon technology according to claim 4, is characterized in that: described reflective film layer (2) overlaps with the focal plane of focus lens group (6).
6. the wavelength blocking system of the composition of the wavelength blocker based on liquid crystal over silicon technology according to claim 1, it is characterized in that: wavelength blocker according to claim 1 is at least two, and described at least two wavelength blockers are connected by coupling mechanism successively.
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| CN201310137569.8A CN103197453B (en) | 2013-04-19 | 2013-04-19 | A kind of wavelength blocker based on liquid crystal over silicon technology and wavelength blocking system |
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| CN201310137569.8A CN103197453B (en) | 2013-04-19 | 2013-04-19 | A kind of wavelength blocker based on liquid crystal over silicon technology and wavelength blocking system |
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| CN103197453B true CN103197453B (en) | 2016-03-30 |
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| CN106094294A (en) * | 2016-08-19 | 2016-11-09 | 黄成智 | Tunable optical filter based on liquid crystal over silicon technology |
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| CN201387495Y (en) * | 2009-03-12 | 2010-01-20 | 福州高意通讯有限公司 | Multi-wavelength selection switch |
| CN202204955U (en) * | 2011-08-26 | 2012-04-25 | 方水塔 | Wavelength blocker based on liquid crystal technology |
| CN102590952A (en) * | 2012-02-29 | 2012-07-18 | 华中科技大学 | Multi-channel dynamic optical dispersion compensator |
| CN203241657U (en) * | 2013-04-19 | 2013-10-16 | 方水塔 | Wave length interrupter and wave length interrupting system based on liquid crystal on silicon technology |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7164859B2 (en) * | 2001-08-29 | 2007-01-16 | Capella Photonics, Inc. | Free-space dynamic wavelength routing systems with interleaved channels for enhanced performance |
| CN100373214C (en) * | 2004-12-15 | 2008-03-05 | 亚洲光学股份有限公司 | Projection display optical system and projector having the same |
| US7822303B2 (en) * | 2005-09-08 | 2010-10-26 | Oclaro (New Jersey), Inc. | Optical wavelength selective router |
| AU2007254860B2 (en) * | 2006-06-02 | 2012-08-09 | Compound Photonics Limited | An optically addressed gray scale electric charge-accumulating spatial light modulator |
| WO2010062620A2 (en) * | 2008-10-27 | 2010-06-03 | Rpx Corporation | Image projection system for reducing spectral interference |
| CN202837789U (en) * | 2012-08-07 | 2013-03-27 | 青岛海泰新光科技有限公司 | LED light source illumination device used for micro projection display |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201387495Y (en) * | 2009-03-12 | 2010-01-20 | 福州高意通讯有限公司 | Multi-wavelength selection switch |
| CN202204955U (en) * | 2011-08-26 | 2012-04-25 | 方水塔 | Wavelength blocker based on liquid crystal technology |
| CN102590952A (en) * | 2012-02-29 | 2012-07-18 | 华中科技大学 | Multi-channel dynamic optical dispersion compensator |
| CN203241657U (en) * | 2013-04-19 | 2013-10-16 | 方水塔 | Wave length interrupter and wave length interrupting system based on liquid crystal on silicon technology |
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Application publication date: 20130710 Assignee: Zhongshan Huijie Optical Communication Technology Co., Ltd. Assignor: Fang Shuita|Huang Huihong Contract record no.: 2019110000008 Denomination of invention: Wavelength blocker and wavelength blocking system based LCoS (liquid crystal on glass) technology Granted publication date: 20160330 License type: Exclusive License Record date: 20190605 |
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Assignee: Zhongshan Huijie Optical Communication Technology Co., Ltd. Assignor: Fang Shuita|Huang Huihong Contract record no.: 2019110000008 Date of cancellation: 20191230 |
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Effective date of registration: 20210616 Address after: 528400 No.5, 3rd floor, building 1, No.2, Jiangling West Road, Torch Development Zone, Zhongshan City, Guangdong Province Patentee after: Zhongshan huaruiguang Communication Technology Co.,Ltd. Address before: 2 / F and 3 / F, No.2 workshop, Zhanxing Road, Torch Development Zone, Zhongshan City, Guangdong Province, 528437 Patentee before: Zhongshan Huijie Optical Communication Technology Co.,Ltd. |