CN105467628B - A kind of hybrid integrated electrically-controlled liquid crystal array of photoswitch - Google Patents
A kind of hybrid integrated electrically-controlled liquid crystal array of photoswitch Download PDFInfo
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- CN105467628B CN105467628B CN201510897626.1A CN201510897626A CN105467628B CN 105467628 B CN105467628 B CN 105467628B CN 201510897626 A CN201510897626 A CN 201510897626A CN 105467628 B CN105467628 B CN 105467628B
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- 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
- G02F1/13—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 liquid crystals, e.g. single liquid crystal display cells
- G02F1/1313—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 liquid crystals, e.g. single liquid crystal display cells specially adapted for a particular application
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- 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
- G02F1/13—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 liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
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- 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
- G02F1/13—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 liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
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- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses a kind of hybrid integrated electrically-controlled liquid crystal array of photoswitch, it include: to be mixed integrated electrically-controlled liquid crystal optically focused microlens array and electrically-controlled liquid crystal astigmatism microlens array, the optical axis coincidence of every unit liquid crystal optically focused lenticule and every unit liquid crystal astigmatism lenticule；In the case where being powered on state, optically focused lenticule implements the adjustable focus optically focused operation of light beam under the electric driving control signal effect of different mean square amplitudes, and astigmatism lenticule implements the controlled divergence degree astigmatism operation of light beam under the electric driving control signal effect of different mean square amplitudes；In the case where powering off state, liquid crystal optically focused lenticule and astigmatism lenticule are converted into the liquid crystal phase shift plate for only postponing phase of light wave；The liquid crystal phase shift plate that liquid crystal optically focused lenticule and astigmatism lenticule are formed after being powered down constitutes the unlatching state of photoswitch.The achievable galvano on-off line operation of hybrid integrated electrically-controlled liquid crystal array of photoswitch of the invention, wide suitable for spectral range, beam intensity variation range is big optical fiber or cable system.
Description
Technical field
The invention belongs to technical field of photo communication, more particularly, to a kind of hybrid integrated electrically-controlled liquid crystal array of photoswitch.
Background technique
Obtain widely applied Fibre Optical Communication Technology at present, using light as information carrier, using optical fiber as transmission medium, by
Lightwave signal is transmitted in optical fiber to transport voice, image and data information.Have the characteristics that transmission capacity is big and good confidentiality,
As the most important wire communication means in the whole world.Photoswitch is the critical function component in optical fiber telecommunications system, have one or
Multiple alternative transmission windows and channel, the main optical signal completed between optical fiber or optical cable orderly accesses, on-off and interconnection,
And operation is mutuallyyed transfer to the optical signal execution in optical transmission chain.So far, photoswitch has become optical transport and light connects
Basic functional unit in mouth network.Currently used photoswitch includes: (one) mechanical optical switch, and (two) are micro electronmechanical
(MEMS) photoswitch, (three) functionality photoabsorption modulation light switch etc..The key parameter for characterizing photoswitch includes: insertion loss, light
Signal echo loss, optical isolation degree, optical crosstalk and extinction ratio etc..Practical photoswitch generally has cost and power consumption opposite
It is lower, structure size is small, index request feature as low as possible is transported to the light of optical fiber.Using display, mechanical optical switch its
Insertion loss is relatively low, and optical isolation degree is higher, is not influenced by the polarization of light beam and spectral characteristic, and performance indicator is gradually steady
Fixed, its structure size is relatively large under normal conditions, is chiefly used in non-communicating light net.Have benefited from the fast of microelectric technique in recent years
Speed development is then mainly used for light-path exchange, light connects or light beam orientation is delivered at present still in the mems optical switch of continuous advancement
In link.Its control light exchange be based primarily upon electromagnetic drive micro-reflector insertion or directional inclination come guide light beam enter it is multidirectional
In the output waveguide or optical fiber of arranged discrete.By densely arranged multiple the independently-controlled micro-reflector groups, incident beam is directed to
Specific direction realizes link on-off.Insertion loss is relatively low, and optical isolation degree and delustring are relatively high, with access port optical fiber or wave
The switch response time for leading coupling efficiency and Microsecond grade with higher, it is easy to encapsulate, but there are a degree of optical crosstalks.Allusion quotation
The light (waveguide) of type modulates photoswitch, is more common in some high-end applications at present, and switch time has the development potentiality of picosecond,
But insertion loss, extinction ratio, polarization loss and crosstalk etc. can not still be optimized simultaneously.In short, being directed to different application demands
And ability to shoulder economically, current photoswitch is in terms of performance indicator as described above still in further promoted.
In conclusion existing mainstream optical switching technique in terms of in reply, high-intensitive big data transports light beam at present there are still
Defect is mainly manifested in following aspect: the switch time of its Millisecond of (one) mechanical optical switch is too long, and insertion loss is still aobvious
Greatly, isolation is insufficient；(2) mems optical switch exists due to needing to adjust beam transmission by the Mechanical Moving of micro- functional structure
Switch motion relative delay that Mechanical Moving inertia is caused, period be long, insertion loss is still not up to ideal situation, isolation still
The problems such as inadequate；(3) conventional electrooptical switching generally passes through electric light or electric absorption effect using material, under electric field action
Change its refractive index, beam phase or polarization state, light intensity or bending optical path, optics are changed based on the interference of light, diffraction or polarization etc.
The modulation of structure and parameter and solidification are complicated, and manipulation difficulty is relatively large, and different types of switch parameter is irregular, it is difficult to unite
It raises and takes into account and higher cost；(4) directional coupled optical switch generally realizes periodically switching for optical power by coupled waveguide,
Such as typical M-Z type interference formula and waveguide type M-Z interfere formula photoswitch, and structure and configuration are complicated, control and variable
The problem of mostly and depositing in terms of cost；(5) polarization-modulating type photoswitch, mainly for the higher transmission wave field of degree of polarization, packet
Include conventional liquid crystal polarized photoswitch etc.；(6) typical thermo-optical switch is based on dielectric object temperature-independent caused by fuel factor
Relationship makes transmission medium variations in refractive index and delay light phase, has larger thermal inertia, be usually used in stable state or gradual occasion；
(7) typical acoustooptic switch makes its refractive index generate cyclically-varying based on the mechanical strain of sound wave in the material to form cloth
Glug grating is mainly used for the beam on-off line operation of long wavelength in view of the low frequency characteristic of sound wave to diffraction specific wavelength wave beam.Always
It, development is suitable for compared with intense beam transimission power, and structure is small/micromation, and insertion loss is low, optical isolation degree and extinction ratio are high, price
The photoswitch framework of relative moderate is still the hot and difficult issue problem for further developing optical switching technique at present, is closed extensively
Note and attention.
Summary of the invention
For the disadvantages described above of the prior art, the present invention provides a kind of hybrid integrated electrically-controlled liquid crystal array of photoswitch,
Purpose is, loads electric driving control signal by sequence and is formed by liquid crystal optically focused microlens array and liquid crystal astigmatism microlens array
Be formed by respectively with liquid crystal phase shift plate open state and close state, complete its transmission channel of varying strength light beam automatically controlled unlatching with
Close, in addition, array of the invention has the spectral range that is applicable in wide, beam intensity variable range is big, easily with optical fiber or
The advantages that optical cable couples.
To achieve the above object, the present invention provides a kind of hybrid integrated electrically-controlled liquid crystal array of photoswitch, including automatically controlled liquid
Brilliant optically focused microlens array and electrically-controlled liquid crystal astigmatism microlens array, electricity of the liquid crystal optically focused microlens array in different mean square amplitudes
The operation of adjustable focus optically focused is implemented to incident beam under driving control signal effect, it is the liquid crystalline phase of delay phase of light wave in the case where powering off state
Move plate；Liquid crystal astigmatism microlens array implements controlled divergence to incident beam under the electric driving control signal effect of different mean square amplitudes
The astigmatism of degree operates, it is the liquid crystal phase shift plate of delay phase of light wave in the case where powering off state；Electrically-controlled liquid crystal optically focused microlens array
The liquid crystal phase shift plate being converted into after being powered down with liquid crystal astigmatism microlens array forms the unlatching state of photoswitch, electrically-controlled liquid crystal astigmatism
The liquid crystal phase shift plate that microlens array and liquid crystal optically focused microlens array are converted into after being powered down forms the closing state of photoswitch；It is logical
The optically focused and astigmatism efficiency of automatically controlled modulation liquid crystal optically focused microlens array and liquid crystal astigmatism microlens array respectively is crossed, is completed different
The open and close of its transmission channel of intensity wave beam switch.
Preferably, the electrically-controlled liquid crystal optically focused microlens array and the electrically-controlled liquid crystal astigmatism microlens array are M × N
Member, wherein M, N are the integer greater than 1；The fill factor of each unit liquid crystal optically focused lenticule and liquid crystal astigmatism lenticule is low
In 40%, i.e., every unit liquid crystal microlens are only projected onto the axial light beam of its light and execute the light action for being converging or diverging with operation
Region area accounts for the ratio of lenticule light entry area lower than 40%.
Preferably, the electrically-controlled liquid crystal optically focused lenticule is by being encapsulated between top surface micropore shape electrode and bottom surface public electrode
Micron order thickness liquid crystal material is constituted, and the electrically-controlled liquid crystal astigmatism lenticule is by being encapsulated in top surface public electrode and bottom surface ring micropore
The interelectrode micron order thickness liquid crystal material of shape is constituted, the center vertical line of micropore, ring micropore and face electrode with corresponding liquid
The optical axis coincidence of brilliant optically focused lenticule and liquid crystal astigmatism lenticule.
Preferably, described by electrically-controlled liquid crystal optically focused microlens array and electrically-controlled liquid crystal astigmatism microlens array hybrid integrated structure
At electrically-controlled liquid crystal array of photoswitch be also M × N member.
It preferably, further include ceramic shell, wherein the electrically-controlled liquid crystal optically focused microlens array is located at the electrically-controlled liquid crystal
The front of astigmatism microlens array is simultaneously coaxially sequentially placed in ceramic shell, every unit liquid crystal optically focused lenticule and every unit liquid crystal
The optical axis coincidence of astigmatism lenticule；The light incident surface of the electrically-controlled liquid crystal optically focused microlens array is passing through the ceramic shell just
Face aperture is exposed outside, the back side aperture that the light-emitting face of the electrically-controlled liquid crystal astigmatism microlens array passes through the ceramic shell
It is exposed outside.
Preferably, the electrically-controlled liquid crystal optically focused microlens array be equipped with first port and the first indicator light, described first
It is used for accessing the electric driving control signal that external equipment is inputted to the liquid crystal optically focused microlens array, first indicator light port
Normal electric driving control signal input state whether is in the instruction electrically-controlled liquid crystal optically focused microlens array；
Preferably, the electrically-controlled liquid crystal astigmatism microlens array be equipped with second port and the second indicator light, described second
It is used for accessing the electric driving control signal that external equipment is inputted to the liquid crystal astigmatism microlens array, second indicator light port
Normal electric driving control signal input state whether is in the instruction electrically-controlled liquid crystal astigmatism microlens array.
Preferably, upper right two side coupling parts in ceramic shell are equipped with close to upper side one end of light-emitting face
One small triangle symbol, to indicate the light-emitting face position of photoswitch.
Through the invention it is contemplated above technical scheme is compared with the prior art, have the advantages that
1, based on electric driving control signal control optical transmission pathway on-off, have electronics control mode it is versatile and flexible, easily with
The advantages of other optics, photoelectricity or electronics structure Coupling；
2, due to all having promotor action to polarization or non-polarized light beam, have the characteristics that the polarization adaptability of wave beam is good；
3, due to executing the automatically controlled bending of light beam by functionalization film liquid crystal, have and be adapted to wider wave spectrum and larger
The characteristics of beam intensity mobility scale；
4, the integrated morphology of the micromation switched and planar end show preferable structure adaptability, can flexibly be inserted into light
In road or it is integrated into optical link；
5, low manufacture cost, relative low price.
Detailed description of the invention
Fig. 1 is a kind of front (light incident surface) structure of hybrid integrated electrically-controlled liquid crystal array of photoswitch of the embodiment of the present invention
Schematic diagram；
Fig. 2 is a kind of back side (light-emitting face) structure of hybrid integrated electrically-controlled liquid crystal array of photoswitch of the embodiment of the present invention
Schematic diagram；
Fig. 3 is a kind of working principle diagram of hybrid integrated electrically-controlled liquid crystal array of photoswitch of the embodiment of the present invention；
Fig. 4 is that a kind of fiber bundle coupling of hybrid integrated electrically-controlled liquid crystal array of photoswitch of the embodiment of the present invention and light beam lead to
Road on-off schematic diagram.
In all the appended drawings, identical appended drawing reference is used to denote the same element or structure, in which:
1- ceramic shell, 2- first port, the first indicator light of 3-, 4- second port, the second indicator light of 5-, 6- light-emitting face
Designated symbol, 7- light incident surface, 8- light-emitting face.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
Not constituting a conflict with each other can be combined with each other.
Fig. 1 is a kind of front (light incident surface) structure of hybrid integrated electrically-controlled liquid crystal array of photoswitch of the embodiment of the present invention
Schematic diagram, Fig. 2 are a kind of back side (light-emitting face) structures of hybrid integrated electrically-controlled liquid crystal array of photoswitch of the embodiment of the present invention
Schematic diagram.As shown, electrically-controlled liquid crystal optically focused microlens array and electrically-controlled liquid crystal astigmatism microlens array are mixed by same optical axis and collect
At being placed in ceramic shell 1, wherein before electrically-controlled liquid crystal optically focused microlens array is located at electrically-controlled liquid crystal astigmatism microlens array
The light incident surface of side, electrically-controlled liquid crystal optically focused microlens array is exposed outside by the positive aperture of ceramic shell 1, and electrically-controlled liquid crystal dissipates
The light-emitting face of light microlens array is exposed outside by the back side aperture of ceramic shell 1.
Fig. 3 is a kind of working principle diagram of hybrid integrated electrically-controlled liquid crystal array of photoswitch of the embodiment of the present invention.As schemed
Show, forms the basic functional units of photoswitch by hybrid integrated upper layer and lower layer liquid crystal micro optical structure.Upper layer liquid crystal micro-optics
Structure is made of the micron order thickness liquid crystal material being encapsulated between top surface micropore shape electrode and bottom surface public electrode, and lower layer's liquid crystal is micro-
Optical texture is constituted by being encapsulated in top surface public electrode with the bottom surface interelectrode micron order thickness liquid crystal material of ring micropore shape, micropore
Center vertical line with ring micropore and the optical axis coincidence with corresponding liquid crystal optically focused lenticule and liquid crystal astigmatism lenticule.Automatically controlled liquid
Brilliant optically focused microlens array implements the operation of adjustable focus optically focused to incident beam under the electric driving control signal effect of different mean square amplitudes,
It is the liquid crystal phase shift plate of delay phase of light wave in the case where powering off state；Electrically-controlled liquid crystal astigmatism microlens array is in different mean square amplitudes
The astigmatism for implementing controlled divergence degree to incident beam under electric driving control signal effect operates, it is delay light wave phase in the case where powering off state
The liquid crystal phase shift plate of position；The liquid crystal being converted into after electrically-controlled liquid crystal optically focused microlens array and the power-off of liquid crystal astigmatism microlens array
Phase shift plate forms the unlatching state of photoswitch, and electrically-controlled liquid crystal astigmatism microlens array is converted with the power-off of liquid crystal optically focused microlens array
At liquid crystal phase shift plate formed photoswitch closing state；Pass through modulation electrically-controlled liquid crystal optically focused microlens array and electrically-controlled liquid crystal respectively
The optically focused and astigmatism efficiency of astigmatism microlens array, the automatically controlled open and close for completing its transmission channel of varying strength wave beam are cut
It changes.
Electrically-controlled liquid crystal optically focused microlens array and electrically-controlled liquid crystal astigmatism microlens array are M × N member, wherein M, N are
Integer greater than 1.The electricity being made of electrically-controlled liquid crystal optically focused microlens array and electrically-controlled liquid crystal astigmatism microlens array hybrid integrated
Draining crystal light shutter array is also M × N member.For example, electrically-controlled liquid crystal optically focused microlens array, electrically-controlled liquid crystal astigmatism microlens array
Or electrically-controlled liquid crystal array of photoswitch can be 3 × 3 yuan, 4 × 4,3 × 4 yuan of even more large scale arrays.Electrically-controlled liquid crystal photoswitch battle array
Column are placed between two optical fiber or two optical fiber clusters, the connection of the beam Propagation access completing optical fiber between or optical fiber cluster or are cut
Disconnected operation；Every unit electrically-controlled liquid crystal photoswitch is coupled with every incoming fiber optic with optical axis in its light incident surface on light-emitting face,
Complete light wave between optical fiber in subsequent transmissions or access cutting.With the refraction condensation of conventional curved surface profile and refraction astigmatism in figure
Lenticule carrys out equivalent display electrically-controlled liquid crystal optically focused lenticule and the light beam of electrically-controlled liquid crystal astigmatism lenticule bends situation.
Fig. 4 is that a kind of hybrid integrated electrically-controlled liquid crystal array of photoswitch of the embodiment of the present invention couples realization optical path with optical fiber cluster
The schematic diagram being switched on and off.As shown, the cluster of optical fiber up and down on 6 × 6 tunnels opens the light with the light on 6 × 6 tunnels couple respectively, at this time on
Each corresponding optical fiber in the optical fiber cluster of lower end is laid with corresponding photoswitch with optical axis.Under optical circuit state, in the optical fiber of top
Light beam is imported into the optical fiber of bottom end；In the case where optical path closes state, the light beam in the optical fiber of top is dissipated by electrically-controlled liquid crystal astigmatism lenticule
Fall and cannot be introduced into the optical fiber of bottom end.
First port 2, the first indicator light 3 are equipped on electrically-controlled liquid crystal optically focused microlens array, wherein first port 2 is used
In the electric driving control signal that input is loaded on liquid crystal structure, the first indicator light 3 is to show whether electric driving control signal is effective
Access, electric driving control signal are normally accessed, then the first indicator light 3 flashes, and are otherwise extinguished；In electrically-controlled liquid crystal astigmatism microlens array
It is equipped with second port 4, the second indicator light 5, wherein second port 4 is controled for inputting the electricity loaded on liquid crystal structure
Signal, to show whether electric driving control signal is effectively accessed, electric driving control signal is normally accessed the second indicator light 5, then and second
Indicator light 5 flashes, and otherwise extinguishes.
Above-mentioned first port 2, second port 4, the first indicator light 3, the second indicator light 5 by ceramic shell 1=side
Face aperture is exposed outside.
Illustrate a kind of hybrid integrated electrically-controlled liquid crystal array of photoswitch of the embodiment of the present invention below with reference to Fig. 1, Fig. 2 and Fig. 3
The course of work.
First port 2 and second port 4 are connected with parallel signal line first.By parallel signal line by first port 2 and
Second port 4 is sent into the electric driving control signal of liquid crystal structure, at this time 5 hook switch flash of the first indicator light 3 and the second indicator light, and self-test is logical
Later the first indicator light 3 and the second indicator light 5 extinguish, and the liquid crystal micro optical structure in electrically-controlled liquid crystal photoswitch enters work shape
State.
Electric driving control signal is sent by first port 2 by signal wire, liquid crystal micro optical structure is controled and is rendered as converging beam
Electrically-controlled liquid crystal optically focused microlens array, 3 hook switch flash of the first indicator light at this time loads in second port 4 at the same time
The signal for controling liquid crystal micro optical structure is cut off, and liquid crystal micro optical structure is converted into the liquid crystal phase shift plate of delay light wave, electricity
Draining crystal light shutter starts to carry out the light-path connection operation between the fine light beam in front and back.Electricity is sent by second port 4 by signal wire
Driving control signal controls the electrically-controlled liquid crystal astigmatism microlens array that liquid crystal micro optical structure is rendered as divergent beams, and second refers at this time
Show 5 hook switch flash of lamp, at the same time, the signal for controling liquid crystal micro optical structure loaded in first port 2 is cut off, liquid crystal
Micro optical structure is converted into the liquid crystal phase shift plate of delay light wave, and the light-path that photoswitch starts to carry out between the fine light beam in front and back is closed
Operation.
As shown in figure 3, unit hybrid integrated electrically-controlled liquid crystal photoswitch is by being placed in the electricity on electrically-controlled liquid crystal astigmatism lenticule top
Draining crystalline substance optically focused lenticule execute incident beam optically focused operation, converging beam by after being powered down by liquid crystal astigmatism lenticule
It is converted to and passes through in the liquid crystal micro optical structure of liquid crystal phase shift plate, the beam Propagation access for completing electrically-controlled liquid crystal photoswitch opens behaviour
Make；By load after the electric driving control signal removal on electrically-controlled liquid crystal optically focused lenticule, liquid crystal optically focused lenticule is converted into liquid crystal
Phase shift plate, at the same time, the liquid crystal structure of bottom end are resumed power-up and are converted into electrically-controlled liquid crystal astigmatism lenticule；By top incidence
Light beam pass through liquid crystal phase shift plate after enter bottom end electrically-controlled liquid crystal astigmatism lenticule, cannot be introduced into due to being dissipated automatically controlled
In the fiber core layer that the light exit side of liquid crystal astigmatism lenticule is coupled, to complete the shutoff operation of optical transmission pathway.
Hybrid integrated electrically-controlled liquid crystal array of photoswitch of the invention is using electrically-controlled liquid crystal optically focused microlens array and automatically controlled liquid
Brilliant astigmatism microlens array is mixed integrated mode, executes and couples connection with optical fiber or optical fiber cluster.By to liquid crystal micro-optics
Structure carries out orderly powered up and down operation, carries out the open and close operation of beam Propagation access.With to transmission light wave
Polarize the automatically controlled opening and closing that adaptability is good, between the optical fiber or optical cable big suitable for wide spectral range and beam intensity mobility scale
Feature.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, by by electrically-controlled liquid crystal
Optically focused microlens array and electrically-controlled liquid crystal astigmatism microlens array hybrid integrated, and liquid crystal microlens array is orderly powered on
Or power-off operates to execute photoswitch；The liquid crystal optically focused and astigmatism microlens array constructed under electric driving control signal excitation, disconnected
Liquid crystal phase shift plate is converted under electric state；Electrically controlled liquid crystal micro-controller array is coupled with liquid crystal phase shift plate to be formed the control light of photoswitch and holds
Row mechanism realizes opening and cutting off for arrayed optical access.Above-mentioned switch body fixture, which has, executes optical transport based on electric driving control signal
The on-off of access switches, wide suitable for spectral range, beam intensity mobility scale is big optical fiber or cable system.Liquid crystal optically focused or
The array scale of astigmatism lenticule is bigger, and the number of fibers that photoswitch can couple is bigger.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (7)
1. a kind of hybrid integrated electrically-controlled liquid crystal array of photoswitch, including electrically-controlled liquid crystal optically focused microlens array and electrically-controlled liquid crystal astigmatism
Microlens array, which is characterized in that
The electrically-controlled liquid crystal optically focused microlens array is by the micron order that is encapsulated between top surface micropore shape electrode and bottom surface public electrode
Thickness liquid crystal material is constituted, and the electrically-controlled liquid crystal astigmatism microlens array is by being encapsulated in top surface public electrode and bottom surface ring micropore shape
Interelectrode micron order thickness liquid crystal material is constituted, the center vertical line and corresponding liquid crystal optically focused lenticule of micropore and ring micropore
With the optical axis coincidence of liquid crystal astigmatism lenticule, wherein the bottom surface public electrode of the electrically-controlled liquid crystal optically focused microlens array and institute
The top surface public electrode for stating electrically-controlled liquid crystal astigmatism microlens array is not connected to, the electrically-controlled liquid crystal optically focused microlens array and described
Electrically-controlled liquid crystal astigmatism microlens array is independently powered on；
The electrically-controlled liquid crystal optically focused microlens array implements incident beam under the electric driving control signal effect of different mean square amplitudes
The operation of adjustable focus optically focused；
The electrically-controlled liquid crystal optically focused microlens array is converted into the liquid crystal phase shift plate of delay phase of light wave in the case where powering off state；
The electrically-controlled liquid crystal astigmatism microlens array implements incident beam under the electric driving control signal effect of different mean square amplitudes
The operation of controlled divergence degree astigmatism；
The electrically-controlled liquid crystal astigmatism microlens array is converted into the liquid crystal phase shift plate of delay phase of light wave in the case where powering off state；
The liquid crystal phase shift plate that the electrically-controlled liquid crystal optically focused lenticule is converted into after powering off with the liquid crystal astigmatism lenticule is formed
The unlatching state of photoswitch；
The liquid crystal phase shift plate that the electrically-controlled liquid crystal astigmatism lenticule is converted into after powering off with the liquid crystal optically focused lenticule is formed
The closing state of photoswitch.
2. hybrid integrated electrically-controlled liquid crystal array of photoswitch as described in claim 1, which is characterized in that by described in modulation respectively
The optically focused and astigmatism efficiency of electrically-controlled liquid crystal optically focused microlens array and the electrically-controlled liquid crystal astigmatism microlens array are completed different strong
Spend the automatically controlled open and close switching of light beam.
3. hybrid integrated electrically-controlled liquid crystal array of photoswitch as described in claim 1, which is characterized in that the electrically-controlled liquid crystal optically focused
Microlens array and the electrically-controlled liquid crystal astigmatism microlens array are M × N member, wherein M, N are the integer greater than 1, each list
The fill factor of first electrically-controlled liquid crystal optically focused lenticule and electrically-controlled liquid crystal astigmatism lenticule is lower than 40%.
4. as claim requires hybrid integrated electrically-controlled liquid crystal array of photoswitch described in 1, which is characterized in that by electrically-controlled liquid crystal
The electrically-controlled liquid crystal array of photoswitch that optically focused microlens array and electrically-controlled liquid crystal astigmatism microlens array hybrid integrated are constituted also be M ×
N member.
5. hybrid integrated electrically-controlled liquid crystal array of photoswitch according to any one of claims 1 to 4, which is characterized in that also wrap
Include ceramic shell；Wherein,
The electrically-controlled liquid crystal optically focused microlens array and the electrically-controlled liquid crystal astigmatism microlens array are placed in ceramics with optical axis sequence
In shell, wherein the electrically-controlled liquid crystal optically focused microlens array is located at the front of the electrically-controlled liquid crystal astigmatism microlens array, and
The optical axis coincidence of every unit electrically-controlled liquid crystal optically focused lenticule and every unit electrically-controlled liquid crystal astigmatism lenticule, the electrically-controlled liquid crystal optically focused
The light incident surface of microlens array is exposed outside by the positive aperture of the ceramic shell, the electrically-controlled liquid crystal astigmatism lenticule
The light-emitting face of array is exposed outside by the back side aperture of the ceramic shell.
6. hybrid integrated electrically-controlled liquid crystal array of photoswitch as described in claim 5, which is characterized in that the electrically-controlled liquid crystal is poly-
Light microlens array is equipped with first port, the first indicator light, and the electrically-controlled liquid crystal astigmatism microlens array is equipped with second end
Mouth and the second indicator light；
The first port is for accessing the electric driving control signal that external equipment is inputted to the liquid crystal optically focused microlens array；
First indicator light is used to indicate whether the liquid crystal optically focused microlens array is in normal electric driving control signal input
State；
The second port is for accessing the electric driving control signal that external equipment is inputted to the liquid crystal astigmatism microlens array；
Second indicator light is used to indicate whether the liquid crystal astigmatism microlens array is in normal electric driving control signal input
State.
7. hybrid integrated electrically-controlled liquid crystal array of photoswitch as claimed in claim 6, which is characterized in that in the upper right of ceramic shell
Two side coupling parts are equipped with a small triangle symbol close to upper side one end of light-emitting face, to indicate the light of photoswitch
It appears position.
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| CN101236314A (en) * | 2008-03-06 | 2008-08-06 | 北京超多维科技有限公司 | Polarization rotation switch light jiggle device comprising same and display apparatus |
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| CN102221763B (en) * | 2010-04-16 | 2014-06-11 | 点晶科技股份有限公司 | Double-layer liquid crystal lens device |
| CN104181640B (en) * | 2014-08-25 | 2017-02-08 | 华中科技大学 | Optical switching module based on liquid crystal variable-focus lens |
| CN104298022B (en) * | 2014-10-24 | 2017-02-01 | 华中科技大学 | Graphene-based double-mold hybrid integrated electronic control liquid crystal micro lens array chip |
| CN104298047B (en) * | 2014-10-24 | 2017-02-15 | 华中科技大学 | Dual-mode composite infrared electric control liquid crystal micro-lens array chip |
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