CN110398845A - A kind of electric light photoswitch - Google Patents
A kind of electric light photoswitch Download PDFInfo
- Publication number
- CN110398845A CN110398845A CN201810379581.2A CN201810379581A CN110398845A CN 110398845 A CN110398845 A CN 110398845A CN 201810379581 A CN201810379581 A CN 201810379581A CN 110398845 A CN110398845 A CN 110398845A
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- Prior art keywords
- light
- thin slice
- waveguide thin
- waveguide
- walk
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- 239000000835 fiber Substances 0.000 claims abstract description 24
- 239000013078 crystal Substances 0.000 claims abstract description 15
- 230000001154 acute effect Effects 0.000 claims abstract description 6
- 239000013307 optical fiber Substances 0.000 claims description 14
- 230000010287 polarization Effects 0.000 claims description 6
- 238000009738 saturating Methods 0.000 claims description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims 1
- 229910052744 lithium Inorganic materials 0.000 claims 1
- 238000000465 moulding Methods 0.000 claims 1
- 230000003287 optical effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- GQYHUHYESMUTHG-UHFFFAOYSA-N lithium niobate Chemical compound [Li+].[O-][Nb](=O)=O GQYHUHYESMUTHG-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000008710 crystal-8 Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/03—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
- G02F1/0305—Constructional arrangements
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/03—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
- G02F1/0305—Constructional arrangements
- G02F1/0311—Structural association of optical elements, e.g. lenses, polarizers, phase plates, with the crystal
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/03—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
- G02F1/0305—Constructional arrangements
- G02F1/0322—Arrangements comprising two or more independently controlled crystals
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Communication System (AREA)
- Optical Integrated Circuits (AREA)
Abstract
The invention discloses a kind of electric light photoswitches, sequentially include single fiber input collimator, the first Walk-off crystal, the first half-wave plate, the first cylindrical lens, LN waveguide thin slice, the second cylindrical lens, the second half-wave plate, the 2nd Walk-off crystal and multi fiber output collimator along the direction of propagation of light；With the electrode zone with single acute triangle on zigzag electrode zone or the LN waveguide thin slice on the LN waveguide thin slice.Electro-optic deflector is made using Zigzag electrodes or acute triangle electrode in the present invention, to realize electric light photoswitch, compares PLZT photoswitch, has response speed faster, work also relatively more stable, manufactures also relative ease.
Description
Technical field
The present invention relates to optical-fibre communications field more particularly to a kind of electric light photoswitches.
Background technique
There is response fast, high reliablity and easily using the photoswitch of electrooptic effect (electro optic effect) production
In optical fiber is integrated the advantages that, it is suitble to production high-speed optical switch.Material with electrooptic effect has PLZT ceramics, LN crystal etc.
Deng.Wherein the feature of PLZT ceramics is as follows:
Musec order photoswitch is done in principle, be it is feasible, faster, just it is improper, disadvantage mainly has the following: 1,
Price is more expensive；2, that there are also dielectric constants is too big for PLZT disadvantage, if also can less do to nanosecond order；3, this material of PLZT
It also is not the material done very well, big specification application is still problematic.
Summary of the invention
In order to solve deficiency in the prior art, the purpose of the present invention is to provide a kind of responses fastly, the electricity of the operation is stable
Light photoswitch.
To achieve the above object, the invention adopts the following technical scheme:
A kind of electric light photoswitch, along the direction of propagation of light sequentially include single fiber input collimator, the first Walk-off crystal,
First half-wave plate, the first cylindrical lens, LN waveguide thin slice, the second cylindrical lens, the second half-wave plate, the 2nd Walk-off crystal and
Multi fiber output collimator；Having on zigzag electrode zone or the LN waveguide thin slice on the LN waveguide thin slice has
The electrode zone of single acute triangle；
When LN waveguide thin slice no applied voltage, the light beam that the single fiber input collimator projects is brilliant by the first Walk-off
It is divided into the orthogonal o light in polarization direction and e light after body, wherein it is identical as o light by the first half-wave plate to retrodeviate polarization state for e light, and two
The first cylindrical lens of Shu Guangjing is coupled into LN waveguide thin slice, and it is saturating that the two-beam come out from LN waveguide thin slice passes through the second cylinder
Mirror, then light beam individually enters the 2nd Walk-off crystal again after the second half-wave plate together with another light beam and is combined into one
Beam is coupled into multi fiber output collimator；
After LN waveguide thin slice applies voltage, LN waveguide thin slice has the refractive index of electrode zone that can change, and then works as LN wave
The light led in thin slice has come into electrode zone from electrodeless region, and according to the law of refraction, deviation can occur for light, deviation angle, θ with
It is directly proportional to apply voltage, after application voltage increases to predetermined value, the deviation angle, θ of light is enough to ensure that light can not be coupled into completely
Multi fiber output collimator.By applying alive size, and then change deviation angle, θ, and then can control optical coupling into spy
Determine optical fiber head, and then plays the role of 1 × N photoswitch.
In multiple optical fiber heads of the multi fiber output collimator, the side of two neighboring optical fiber head is connected by flat horizontal surface
Integrally.
The LN waveguide thin slice is body formed by lithium niobate crystal.
The LN waveguide thin slice with a thickness of 9um.
The invention adopts the above technical scheme, and electro-optic deflector is made using Zigzag electrodes or acute triangle electrode,
To realize electric light photoswitch, PLZT photoswitch is compared, there is response speed faster, is worked also relatively more stable, also phase is manufactured
To simplicity.
Detailed description of the invention
The present invention is described in further details below in conjunction with the drawings and specific embodiments:
Fig. 1 is a kind of schematic diagram of electric light photoswitch of the present invention；
Fig. 2 is the schematic diagram of LN waveguide chip-embodiment 1；
Fig. 3 is the schematic diagram of LN waveguide chip-embodiment 2；
Fig. 4 is the schematic diagram that multiple optical fiber heads of multi fiber output collimator link into an integrated entity.
Specific embodiment
Shown in one of picture 1-4, a kind of electric light photoswitch of the present invention, sequentially includes that single fiber is defeated along the direction of propagation of light
It is saturating to enter collimator 1, the first Walk-off crystal 2, the first half-wave plate 3, the first cylindrical lens 4, LN waveguide thin slice 5, the second cylinder
Mirror 6, the second half-wave plate 7, the 2nd Walk-off crystal 8 and multi fiber output collimator 9；
When LN waveguide 5 no applied voltage of thin slice, the light beam that the single fiber input collimator 1 projects passes through the first Walk-off
It is divided into the orthogonal o light in polarization direction and e light after crystal 2, wherein e light retrodeviates polarization state and o light phase by the first half-wave plate 3
Together, two-beam is coupled into LN waveguide thin slice 5 through the first cylindrical lens 4, and the two-beam come out from LN waveguide thin slice 5 passes through second
Cylindrical lens 6, then light beam individually enters the 2nd Walk-off crystal after the second half-wave plate 7 together with another light beam again
8 are combined into a branch of, are coupled into multi fiber output collimator 9；
After LN waveguide thin slice 5 applies voltage, LN waveguide thin slice 5 has the refractive index of electrode zone 51 that can change, and then works as
Light in LN waveguide thin slice 5 has come into electrode zone 51 from electrodeless region, and according to the law of refraction, deviation, deviation can occur for light
Angle, θ to apply voltage it is directly proportional, when apply voltage increase to predetermined value after, the deviation angle, θ of light be enough to ensure that light entirely without
Method is coupled into multi fiber output collimator 9.By applying alive size, and then change deviation angle, θ, and then can control light
It is coupled into particular fiber head, and then plays the role of 1 × N photoswitch.
The LN waveguide thin slice 5 is body formed by lithium niobate crystal.
The LN waveguide thin slice 5 with a thickness of 9um.
As shown in Fig. 2, having zigzag electrode zone 51 on LN waveguide thin slice 5.Or as shown in figure 3, LN waveguide thin slice 5
The upper electrode zone 51 with single acute triangle.The bias angle theta of 5 structure of both the above LN waveguide thin slice is all only related to L/W,
Can half-wave voltage be substantially reduced by LN waveguide thin slice 5 is very thin.
When the optical fiber head number of multi fiber output collimator 9 is greater than 8, in order to reduce the interval between each fibre core, multi fiber
In multiple optical fiber heads of output collimator 9, the side of two neighboring optical fiber head is linked into an integrated entity by flat horizontal surface, in this way may not be used
It only realizes the photoswitch of 1*N, while the voltage being applied on LN waveguide thin slice 5 can be reduced.
The voltage swing that the present invention is applied on LN waveguide superthin section by control, can control the size of light deflection angle θ, into
And control optical coupling into specific optical fiber head, play the role of selecting by voltage swing optical coupling into which optical fiber,
To which selection is from different optical fiber head output optical signals, and then play the role of realizing the photoswitch of 1*N.
By the implementation of above-mentioned case, the present invention is described in detail, but those skilled in the art should be understood that not
It is detached from the spirit and scope of the present invention defined by the appended claims, the present invention is made in the form and details
Various change is the range that the present invention is protected.
Claims (4)
1. a kind of electric light photoswitch, it is characterised in that: it sequentially includes single fiber input collimator, first along the direction of propagation of light
Walk-off crystal, the first half-wave plate, the first cylindrical lens, LN waveguide thin slice, the second cylindrical lens, the second half-wave plate, second
Walk-off crystal and multi fiber output collimator；There is Zigzag electrodes region or the LN wave on the LN waveguide thin slice
Lead the electrode zone on thin slice with single acute triangle；
When LN waveguide thin slice no applied voltage, the light beam that the single fiber input collimator projects is brilliant by the first Walk-off
It is divided into the orthogonal o light in polarization direction and e light after body, wherein it is identical as o light by the first half-wave plate to retrodeviate polarization state for e light, and two
The first cylindrical lens of Shu Guangjing is coupled into LN waveguide thin slice, and it is saturating that the two-beam come out from LN waveguide thin slice passes through the second cylinder
Mirror, then light beam individually enters the 2nd Walk-off crystal again after the second half-wave plate together with another light beam and is combined into one
Beam is coupled into multi fiber output collimator；
After LN waveguide thin slice applies voltage, LN waveguide thin slice has the refractive index of electrode zone that can change, and then works as LN wave
The light led in thin slice has come into electrode zone from electrodeless region, and according to the law of refraction, deviation can occur for light, deviation angle, θ with
It is directly proportional to apply voltage, after application voltage increases to predetermined value, the deviation angle, θ of light is enough to ensure that light can not be coupled into completely
Multi fiber output collimator.
2. a kind of electric light photoswitch according to claim 1, it is characterised in that: the multi fiber output collimator it is multiple
In optical fiber head, the side of two neighboring optical fiber head is linked into an integrated entity by flat horizontal surface.
3. a kind of electric light photoswitch according to claim 1, it is characterised in that: the LN waveguide thin slice is by lithium columbate crystal
Molding.
4. a kind of electric light photoswitch according to claim 1, it is characterised in that: the LN waveguide thin slice with a thickness of 9um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810379581.2A CN110398845A (en) | 2018-04-25 | 2018-04-25 | A kind of electric light photoswitch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810379581.2A CN110398845A (en) | 2018-04-25 | 2018-04-25 | A kind of electric light photoswitch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110398845A true CN110398845A (en) | 2019-11-01 |
Family
ID=68319505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810379581.2A Pending CN110398845A (en) | 2018-04-25 | 2018-04-25 | A kind of electric light photoswitch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110398845A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117289496A (en) * | 2023-11-21 | 2023-12-26 | 武汉光谷航天三江激光产业技术研究院有限公司 | High-precision laser beam scanning device based on electro-optic crystal and use method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2529397Y (en) * | 2001-10-30 | 2003-01-01 | 福州康顺光通讯有限公司 | Novel optical circulator |
| US7403677B1 (en) * | 2005-05-11 | 2008-07-22 | Agiltron, Inc. | Fiberoptic reconfigurable devices with beam shaping for low-voltage operation |
| CN101793822A (en) * | 2010-01-29 | 2010-08-04 | 南京树声科技有限公司 | Multi-wavelength laser for measuring multi-component gas and measuring method thereof |
| CN202975525U (en) * | 2012-12-10 | 2013-06-05 | 福州高意通讯有限公司 | Optical switch or variable attenuator |
| CN203490436U (en) * | 2013-10-12 | 2014-03-19 | 福州高意通讯有限公司 | Electro-optics Q-switch optical switch |
| CN104184030A (en) * | 2013-05-21 | 2014-12-03 | 福州高意通讯有限公司 | Tunable laser |
| CN104201555A (en) * | 2014-09-18 | 2014-12-10 | 福建福晶科技股份有限公司 | Polarization insensitive electro-optic Q switch |
| CN106067655A (en) * | 2016-07-28 | 2016-11-02 | 福建福晶科技股份有限公司 | A kind of with electric-optically Q-switched optoisolator |
-
2018
- 2018-04-25 CN CN201810379581.2A patent/CN110398845A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2529397Y (en) * | 2001-10-30 | 2003-01-01 | 福州康顺光通讯有限公司 | Novel optical circulator |
| US7403677B1 (en) * | 2005-05-11 | 2008-07-22 | Agiltron, Inc. | Fiberoptic reconfigurable devices with beam shaping for low-voltage operation |
| CN101793822A (en) * | 2010-01-29 | 2010-08-04 | 南京树声科技有限公司 | Multi-wavelength laser for measuring multi-component gas and measuring method thereof |
| CN202975525U (en) * | 2012-12-10 | 2013-06-05 | 福州高意通讯有限公司 | Optical switch or variable attenuator |
| CN104184030A (en) * | 2013-05-21 | 2014-12-03 | 福州高意通讯有限公司 | Tunable laser |
| CN203490436U (en) * | 2013-10-12 | 2014-03-19 | 福州高意通讯有限公司 | Electro-optics Q-switch optical switch |
| CN104201555A (en) * | 2014-09-18 | 2014-12-10 | 福建福晶科技股份有限公司 | Polarization insensitive electro-optic Q switch |
| CN106067655A (en) * | 2016-07-28 | 2016-11-02 | 福建福晶科技股份有限公司 | A kind of with electric-optically Q-switched optoisolator |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117289496A (en) * | 2023-11-21 | 2023-12-26 | 武汉光谷航天三江激光产业技术研究院有限公司 | High-precision laser beam scanning device based on electro-optic crystal and use method |
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Application publication date: 20191101 |
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