CN103163664B - Based on the frequency-selecting filter of micro-ring resonant cavity - Google Patents
Based on the frequency-selecting filter of micro-ring resonant cavity Download PDFInfo
- Publication number
- CN103163664B CN103163664B CN201310113044.0A CN201310113044A CN103163664B CN 103163664 B CN103163664 B CN 103163664B CN 201310113044 A CN201310113044 A CN 201310113044A CN 103163664 B CN103163664 B CN 103163664B
- Authority
- CN
- China
- Prior art keywords
- micro
- resonant cavity
- frequency
- main waveguide
- ring resonant
- 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.)
- Active
Links
- 239000000835 fiber Substances 0.000 claims abstract description 13
- 238000006880 cross-coupling reaction Methods 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 abstract description 28
- 238000005859 coupling reaction Methods 0.000 abstract description 28
- 230000008878 coupling Effects 0.000 abstract description 26
- 230000007246 mechanism Effects 0.000 abstract description 26
- 230000008859 change Effects 0.000 description 8
- 230000003287 optical effect Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000005684 electric field Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The invention discloses the frequency-selecting filter based on micro-ring resonant cavity, comprise micro-ring resonant cavity, the first main waveguide, the second main waveguide, the first coupling mechanism and the second coupling mechanism, micro-ring resonant cavity is connected by the first coupling mechanism and the first main waveguide, the Input end of the first main waveguide is the signal input part of frequency-selecting filter, and the Through end of the first main waveguide is the first signal output part of described frequency-selecting filter; Micro-ring resonant cavity is connected by the second coupling mechanism and the second main waveguide, and the Drop end of the second main waveguide is the secondary signal output terminal of frequency-selecting filter; Micro-ring resonant cavity side connects a KDP modulator between the first coupling mechanism and the second coupling mechanism, and opposite side connects the 2nd KDP modulator between the first coupling mechanism and the second coupling mechanism, and a KDP modulator, the 2nd KDP modulator all switch on power.Frequency-selecting filter of the present invention have volume little, be easy to the advantages such as fibre system is integrated, highly sensitive, tuned speed is fast.
Description
Technical field
The invention belongs to optical information technology field, be specifically related to a kind of frequency-selecting filter based on micro-ring resonant cavity.
Background technology
Along with communication technology ground high speed development, micro-ring resonator filter is subject to extensive concern and the research of technician, has more and more important effect in technical field of photo communication.The radius of micro-ring resonant cavity is very little (micron level), and similar with optical wavelength size, therefore, it has very high integration.Light exports from the straight-through end (through) of this structure and lower terminal (drop) after iterative cycles in resonator cavity: when light wave and resonator cavity reach phase matching, light could export from the lower terminal of system, and optical wavelength is now the resonance wavelength of resonance cavity system.And the straight-through end from this structure exports by the light of non-resonant wavelengths, therefore can obtain the transmission curve caved at straight-through end, thus achieve the frequency-selective filtering function of micro-ring resonant cavity; And micro-ring resonant cavity wavelength chooses has very high high sensitivity: namely the subtle change of resonator cavity effective refractive index just can cause the change of output wavelength.
But existing tunable optic filter all exists some respective shortcomings, such as, the tuned speed of AWG tunable optic filter is slow; The cake resistancet of acousto-optic tunable filter is roomy, power consumption is high, complex structure; Etc..
Summary of the invention
The invention provides a kind of frequency-selecting filter based on micro-ring resonant cavity.Frequency-selecting filter of the present invention has that volume is little, to be easy to fibre system integrated, highly sensitive, and the advantages such as tuned speed is fast, are particularly suitable for the application in optical communication system technology.
The present invention takes following technical scheme: based on the frequency-selecting filter of micro-ring resonant cavity, comprises the first power supply (1), second source (6), the first main waveguide BW1 (7), the second main waveguide BW2 (2), the first coupling mechanism C
1(8), the second coupling mechanism C
2(3), a KDP modulator (4), the 2nd KDP modulator (5) and micro-ring resonant cavity (9); Micro-ring resonant cavity (9) is by the first coupling mechanism C
1(8) and the first main waveguide BW1 (7) is connected, and wherein, Input end is the signal input part of this frequency-selecting filter, and Through end is one of them signal output part of this frequency-selecting filter---straight-through end.Micro-ring resonant cavity (9) is also by the second coupling mechanism C
2(3) and the second main waveguide BW2 (2) is connected, and wherein, Drop end is another signal output part---the lower terminal of this frequency-selecting filter.At side (two coupling mechanism C of micro-ring resonant cavity (9)
1and C
2between) connect a KDP modulator (4), opposite side (two coupling mechanism C
1and C
2between) connect the 2nd KDP modulator (5), two modulators all switch on power, namely the first power supply (1) connected by a KDP modulator (4), and second source (6) connected by the 2nd KDP modulator (5).
Light wave is from the Input end input of the first main waveguide BW1, and part light is through coupling mechanism C
1be coupled into ring in a subtle way, meet the light of condition of resonance again through coupling mechanism C
2coupling, then exported by left end---lower terminal exports, and the light of non-resonant wavelengths is then by the right-hand member of the first main waveguide BW1---the straight-through end of the second main waveguide BW2, thus achieve the frequency-selective filtering function of this micro-ring resonant cavity configuration.
Preferably, the cross-coupling coefficient of 2 coupling mechanisms of this frequency-selecting filter is 0.3.
Preferably, the input of this frequency-selecting filter is continuous wave signal.
Feature of the present invention is in micro-ring resonant cavity, add two KDP modulators.KDP modulator is made up of KDP electro-optic crystal, its principle of work is based on electrooptical effect: under the effect of applying direct current electric field or low-frequency current field, there is the change linear with extra electric field in the refractive index of medium, the phase place of the light by waveguide is also changed thereupon.
The present invention utilizes KDP modulator to realize the frequency-selective filtering function based on micro-ring resonant cavity.When energized, due to the effect of KDP modulator, the effective refractive index of micro-ring resonant cavity changes, and causes the phase place of the light transmitted in micro-ring to change, finally will cause the change of the resonance wavelength of micro-ring resonant cavity.Micro-ring resonant cavity wavelength chooses has very high sensitivity: namely the subtle change of resonator cavity effective refractive index just can cause the change of output wavelength.Suitable regulation voltage size, can realize the output of any resonance wavelength.
Frequency-selecting filter of the present invention have volume little, be easy to the advantages such as fibre system is integrated, highly sensitive, tuned speed is fast, be particularly suitable for the application in optical communication system technology.
Accompanying drawing explanation
Fig. 1 is the structural representation of the frequency-selecting filter based on micro-ring resonant cavity.
In Fig. 1, A
1represent input light field, a
drepresent lower terminal Transmission field, a
trepresent straight-through end Transmission field.
Fig. 2 is the curve of output of system two output terminals do not had in impressed voltage situation.
In Fig. 2, T
drepresent lower terminal transmissivity, T
trepresent straight-through end transmissivity.
Fig. 3 is the curve of output that two impressed voltages are system two output terminals in 2V situation.
In Fig. 3, T
drepresent lower terminal transmissivity, T
trepresent straight-through end transmissivity.
Embodiment
Below in conjunction with accompanying drawing, the embodiment of the present invention is elaborated.
As shown in Figure 1, the present embodiment comprises power supply 1, power supply 6, main waveguide BW17, main waveguide BW22, coupling mechanism C based on the frequency-selecting filter of micro-ring resonant cavity
18, coupling mechanism C
23, KDP modulator 4, KDP modulator 5 and micro-ring resonant cavity 9.Wherein, the cross-coupling coefficient of two coupling mechanisms is 0.3.
Micro-ring resonant cavity 9 is by coupling mechanism C
1be connected with main waveguide BW1, wherein, Input end is the signal input part of this frequency-selecting filter, and Through end is one of them signal output part of this frequency-selecting filter---straight-through end.Micro-ring resonant cavity 9 is also by coupling mechanism C
2be connected with main waveguide BW2, wherein, Drop end is another signal output part---the lower terminal of this frequency-selecting filter.At side (two coupling mechanism C of micro-ring resonant cavity 9
1and C
2between) connect KDP modulator 4, opposite side (two coupling mechanism C
1and C
2between) also connect on KDP modulator 5, two modulators and all switch on power, that is: KDP modulator 4 and power supply 1 are connected, and KDP modulator 5 and power supply 6 are connected.
When Input end input continuous wave signal, part light is through coupling mechanism C
1be coupled into ring in a subtle way, when the phase place that light signal transmits generation in a week in micro-ring resonant cavity is the integral multiple of 2 π, namely meet condition of resonance: the light of β L=2q π (q=1,2,3...) is through coupling mechanism C
2coupling, then exported by left end---lower terminal exports, and the light of non-resonant wavelengths is then by the right-hand member of main waveguide BW1---the straight-through end of main waveguide BW2.Suitable adjustment power supply size, under the effect of KDP modulator, can there is corresponding skew in the export resonance wavelength of frequency-selecting filter.
As shown in Figure 2, during U=0V, system leads directly to the transmissivity of end and lower terminal.As shown in Figure 3, during U=2V, system leads directly to the transmissivity of end and lower terminal.Comparison diagram 2 and Fig. 3, can find that, when input voltage changes, the export resonance wavelength of system offsets.Explanation can control output wavelength by regulating the size of input voltage.
The frequency-selective filtering process of frequency-selecting filter of the present invention:
1, according to required wavelength of optical signal or frequency, select suitable signal wavelength to meet the condition of resonance of micro-ring resonant cavity.
2, according to the export resonance wavelength leading directly to end and lower terminal, adjustment power supply size, thus obtain required resonance wavelength.
Above the preferred embodiments of the present invention and principle are described in detail, for those of ordinary skill in the art, according to thought provided by the invention, embodiment will change, and these changes also should be considered as protection scope of the present invention.
Claims (2)
1. based on the frequency-selecting filter of micro-ring resonant cavity, described frequency-selecting filter input continuous wave signal, comprise micro-ring resonant cavity (9), first main waveguide (7), second main waveguide (2), first fiber coupler (8) and the second fiber coupler (3), micro-ring resonant cavity (9) is connected by the first fiber coupler (8) and the first main waveguide (7), wherein, the Input end of the first main waveguide (7) is the signal input part of described frequency-selecting filter, the Through end of the first main waveguide (7) is the first signal output part of described frequency-selecting filter, micro-ring resonant cavity (9) is connected by the second fiber coupler (3) and the second main waveguide (2), and wherein, the Drop end of the second main waveguide (2) is the secondary signal output terminal of described frequency-selecting filter, it is characterized in that: micro-ring resonant cavity (9) side connects a KDP modulator (4) between the first fiber coupler (8) and the second fiber coupler (3), opposite side connects the 2nd KDP modulator (5) between the first fiber coupler (8) and the second fiber coupler (3), and a KDP modulator (4), the 2nd KDP modulator (5) all switch on power.
2. frequency-selecting filter as claimed in claim 1, is characterized in that: the cross-coupling coefficient of described first fiber coupler (8), the second fiber coupler (3) is 0.3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310113044.0A CN103163664B (en) | 2013-04-02 | 2013-04-02 | Based on the frequency-selecting filter of micro-ring resonant cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310113044.0A CN103163664B (en) | 2013-04-02 | 2013-04-02 | Based on the frequency-selecting filter of micro-ring resonant cavity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103163664A CN103163664A (en) | 2013-06-19 |
| CN103163664B true CN103163664B (en) | 2015-10-07 |
Family
ID=48586878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310113044.0A Active CN103163664B (en) | 2013-04-02 | 2013-04-02 | Based on the frequency-selecting filter of micro-ring resonant cavity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103163664B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698906A (en) * | 2013-12-19 | 2014-04-02 | 杭州电子科技大学 | Frequency adjustable filter based on Mach-Zehnder electro-optic modulator |
| WO2018035767A1 (en) * | 2016-08-24 | 2018-03-01 | 华为技术有限公司 | Segmented cascaded micro-ring resonator device |
| US20190058306A1 (en) * | 2017-08-18 | 2019-02-21 | Futurewei Technologies, Inc. | Efficient Wavelength Tunable Hybrid Laser |
| CN110579269B (en) * | 2019-08-14 | 2022-05-31 | 中国地震局地壳应力研究所 | Infrasonic wave sensor for rarefied atmosphere space and sound detection load cabin |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1253736C (en) * | 2004-07-19 | 2006-04-26 | 浙江大学 | Light wave guide micro ring device coupled by bending shape oriented coupler |
| CN100445785C (en) * | 2007-01-05 | 2008-12-24 | 东南大学 | Organic polymer optical waveguide resonance ring |
| CN100489580C (en) * | 2007-01-12 | 2009-05-20 | 东南大学 | Rectangular, micro annular resonant cavity type light filter |
| US7805026B2 (en) * | 2007-10-09 | 2010-09-28 | Alcatel-Lucent Usa Inc. | Resonator-assisted control of radio-frequency response in an optical modulator |
| CN203164550U (en) * | 2013-04-02 | 2013-08-28 | 杭州电子科技大学 | Frequency-selecting filter based on micro-ring resonant cavity |
-
2013
- 2013-04-02 CN CN201310113044.0A patent/CN103163664B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103163664A (en) | 2013-06-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Li et al. | Active resonance wavelength stabilization for silicon microring resonators with an in-resonator defect-state-absorption-based photodetector | |
| Bortnik et al. | Electrooptic polymer ring resonator modulation up to 165 GHz | |
| Xue et al. | Breaking the bandwidth limit of a high-quality-factor ring modulator based on thin-film lithium niobate | |
| CN104133336A (en) | On-chip integrated optical digital-to-analog converter based on silicon-based nanowire waveguide | |
| CN103293715A (en) | Electro-optic modulator based on micro-ring Mach-Zehnder interferometer structure | |
| CN113534504B (en) | Electronically controlled adjustable polarization beam splitting method and device based on film lithium niobate | |
| CN103163664B (en) | Based on the frequency-selecting filter of micro-ring resonant cavity | |
| CN103944064B (en) | For the modulation of high speed Q, the reflecting cavity mirror structure of tunable wave length waveguide laser | |
| CN104977733B (en) | Silicon-based nonreciprocal device structure and electric control nonreciprocal implementation method | |
| Wang et al. | Efficient polarization splitter-rotator on thin-film lithium niobate | |
| CN203164550U (en) | Frequency-selecting filter based on micro-ring resonant cavity | |
| Zhang et al. | Reversible Fano resonance by transition from fast light to slow light in a coupled-resonator-induced transparency structure | |
| Timurdogan et al. | Vertical junction silicon microdisk modulator with integrated thermal tuner | |
| Notaros et al. | Integrated liquid-crystal-based variable-tap devices for visible-light amplitude modulation | |
| CN106842631B (en) | Integrated multifunctional optical modulator | |
| CN109240019B (en) | Binary all-optical comparator | |
| CN101325312B (en) | High speed modulation semiconductor laser | |
| Liang et al. | Efficient pure phase optical modulator based on strongly over-coupled resonators | |
| Xiao et al. | Ring-resonator-coupled Mach-Zehnder interferometers for integrated photonics by 3D direct laser writing | |
| CN203705742U (en) | Mach-Zehnder electrooptical modulator-based frequency-adjustable filter | |
| CN104793428A (en) | Silicon substrate electro-optical OR-AND integrated logic device | |
| Kumar et al. | 10Gbit/s all-optical NRZ-OOK to RZ-OOK format conversion in an ultra-small III-V-on-silicon microdisk fabricated in a CMOS pilot line | |
| CN204925541U (en) | Nonequilibrium mach -Zehnder photoswitch based on fine annular chamber of thermoae actinic light | |
| Ding et al. | GHz-bandwidth Optical Filters Based on High-order Lithium Niobate Microring Resonators | |
| CN101325313A (en) | High speed modulation semiconductor laser |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160606 Address after: 310000 Hangzhou economic and Technological Development Zone, Hangzhou Dianzi University, room 521, Pioneer Park, Patentee after: Hangzhou East angle Photoelectric Technology Co., Ltd. Address before: Hangzhou City, Zhejiang province 310018 Jianggan District Xiasha Higher Education Park No. 2 street Patentee before: Hangzhou Electronic Science and Technology Univ |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160706 Address after: 310013 room 46, 601 village, Qiushi village, Hangzhou, Xihu District, Zhejiang Patentee after: Xiang Zhen Address before: 310000 Hangzhou economic and Technological Development Zone, Hangzhou Dianzi University, room 521, Pioneer Park, Patentee before: Hangzhou East angle Photoelectric Technology Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170911 Address after: Hangzhou City, Zhejiang province 310018 poplar economic and Technological Development Zone Street Fred Plaza 5 building 2725 room Patentee after: Hangzhou wavelength Photoelectric Technology Co., Ltd. Address before: 310013 room 46, 601 village, Qiushi village, Hangzhou, Xihu District, Zhejiang Patentee before: Xiang Zhen |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220530 Address after: 518000 Guangdong Shenzhen Nanshan District science and Technology Park North area two long road 8, 305 building (305). Patentee after: INNO LASER TECHNOLOGY Corp.,Ltd. Address before: 310018 room 2725, building 5, Fred Plaza, Baiyang street, Hangzhou Economic and Technological Development Zone, Zhejiang Province Patentee before: HANGZHOU BOCHANG PHOTOELECTRIC TECHNOLOGY CO.,LTD. |