CN105467628A - Hybrid integrated electric-control liquid-crystal optical switch array - Google Patents
Hybrid integrated electric-control liquid-crystal optical switch array Download PDFInfo
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- CN105467628A CN105467628A CN201510897626.1A CN201510897626A CN105467628A CN 105467628 A CN105467628 A CN 105467628A CN 201510897626 A CN201510897626 A CN 201510897626A CN 105467628 A CN105467628 A CN 105467628A
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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 hybrid integrated electric-control liquid-crystal optical switch array. The hybrid integrated electric-control liquid-crystal optical switch array comprises a hybrid integrated electric-control liquid-crystal optically-focused microlens array and an electric-control liquid-crystal optically-diffused microlens array, and the optical axis of each liquid-crystal optically-focused microlens unit is coincident with that of each liquid-crystal optically-diffused microlens unit. When being powered up, optically-focused microlenses carry out internal-focusing optically-focused operations to a light beam under the effect of electric-control signals of different mean square amplitudes. and optically-diffused microlenses carry out controllable operations with a controllable diffusion degree to a light beam under the effect of electric-control signals of different mean square amplitudes. When being powered off, the liquid-crystal optically-focused microlenses and the optically-diffused microlenses are converted into liquid-crystal phase-shift plates which only delay light wave phases, and the liquid-crystal phase-shift plates which are formed after the liquid-crystal optically-focused microlenses and the optically-diffused microlenses are powered off form the opening state of the optical switch. The hybrid integrated electric-control liquid-crystal optical switch array can complete electric-control light beam on-off operations, and is suitable for optical fiber or optical cable systems which are wide in spectrum scope and large in wave beam intensity change scope.
Description
Technical field
The invention belongs to technical field of photo communication, more specifically, relate to a kind of hybrid integrated electrically-controlled liquid crystal array of photoswitch.
Background technology
The Fibre Optical Communication Technology of current acquisition widespread use is information carrier with light, take optical fiber as transmission medium, transports voice, image and data message by transmitting lightwave signal in a fiber.There is the features such as the large and good confidentiality of transmission capacity, become global topmost wire communication means.Photoswitch is the critical function assembly in optical fiber telecommunications system, there is one or more alternative transmission window and passage, the light signal mainly completed between optical fiber or optical cable accesses in order, break-make and interconnected, and performs the light signal in optical transmission chain and mutually transfer operation.Up to now, photoswitch has become the basic functional module in optical transport and optical interface network.Photoswitch conventional at present comprises: (one) mechanical optical switch, (two) micro electronmechanical (MEMS) photoswitch, (three) functional photoabsorption modulation light switch etc.The key parameter characterizing photoswitch comprises: insertion loss, light signal return loss, light isolation, optical crosstalk and extinction ratio etc.Practical photoswitch generally all has cost and power consumption is relatively low, physical dimension is little, transport the features such as index request is low as far as possible to the light of optical fiber.Application display, its insertion loss of mechanical optical switch is relatively low, and light isolation is higher, and do not affect by the polarization of light beam and spectral characteristic, performance index are gradually stable, and its physical dimension is relatively large under normal circumstances, are used in non-communicating light net.Have benefited from the fast development of microelectric technique in recent years, at present still at the mems optical switch of continuous advancement, be then mainly used in light-path exchange, light continues or beam direction is delivered in link.Its control light exchanges mainly guides in the output waveguide or optical fiber that light beam enters multidirectional arranged discrete based on the insertion of the micro-reflector of Electromagnetic Drive or directional inclination.By the controlled micro-reflector group of densely arranged multiple independence, incident beam is directed to specific direction, realizes link break-make.Insertion loss is relatively low, light isolation and extinction ratio higher, hold optical fiber or waveguide to have the switching response time of higher be coupled usefulness and Microsecond grade with discrepancy, is easy to encapsulation, but existence optical crosstalk to a certain degree.Typical light (waveguide) light modulated switch, be more common in some high-end applications at present, have the development potentiality of picosecond its switching time, but insertion loss, extinction ratio, polarization loss and crosstalk etc. still cannot obtain optimization simultaneously.In a word, for different application demands and ability to shoulder economically, current photoswitch in performance index as above still in promoting further.
In sum, existing main flow optical switching technique still existing defects in reply current high strength large data traffic light beam, main manifestations is in the following areas: the switching time of its Millisecond of (one) mechanical optical switch is long, and insertion loss is still aobvious large, and isolation is not enough; (2) mems optical switch is owing to needing to regulate bundle transmission by the Mechanical Moving of micro-functional structure, the problem such as there is switch motion relative delay that Mechanical Moving inertia causes, the cycle is long, insertion loss does not reach ideal situation yet, isolation still is apparent not enough; (3) conventional electrooptical switching is generally by utilizing electric light or the electric absorption effect of material, its refractive index, beam phase or polarization state is changed under electric field action, light intensity or bending light path is changed based on the interference of light, diffraction or polarization etc., the modulation of optical texture and parameter is complicated with solidification, manipulation difficulty is relatively large, dissimilar switch parameter is uneven, is difficult to make overall plans and cost is higher; (4) directional coupled optical switch generally realizes the periodicity conversion of luminous power by coupled waveguide, such as typical M-Z type interfere type and waveguide type M-Z interfere type photoswitch, its structure and configuration complicated, control and variable mainly with and there is the problem of cost aspect; (5) polarization-modulating type photoswitch, mainly for the transmission wave field that degree of polarization is higher, comprises conventional liquid crystal polarized photoswitch etc.; (6) the dielectric object temperature dependence that causes based on thermal effect of typical thermo-optical switch, makes transmission medium variations in refractive index and postpones light phase, having larger thermal inertia, be usually used in stable state or gradual occasion; (7) typical acoustooptic switch makes its refractive index produce cyclical variation based on sound wave mechanical strain in the material and forms Bragg grating thus diffraction specific wavelength wave beam, and the low frequency characteristic in view of sound wave is mainly used in the bundle make-break operation of long wavelength.In a word, development is applicable to comparatively intense beam through-put power, and structure is little/microminiaturized, insertion loss is low, light isolation and extinction ratio high, the photoswitch framework of relative low price, is still the focus and difficulties that further develop optical switching technique at present, is subject to extensive concern and attention.
Summary of the invention
For the above defect of prior art, the invention provides a kind of hybrid integrated electrically-controlled liquid crystal array of photoswitch, its object is to, add live by order drive unlatching state that the control liquid crystal optically focused microlens array that formed of signal and liquid crystal astigmatism microlens array formed with liquid crystal phase shift plate respectively and close closed state, complete the automatically controlled open and close of its transmission channel of varying strength light beam, in addition, it is wide that array of the present invention has be suitable for spectral range, beam intensity variable scope is large, easily with the advantage such as optical fiber or optical cable are coupled.
For achieving the above object, the invention provides a kind of hybrid integrated electrically-controlled liquid crystal array of photoswitch, comprise electrically-controlled liquid crystal optically focused microlens array and electrically-controlled liquid crystal astigmatism microlens array, liquid crystal optically focused microlens array implements the operation of adjustable focus optically focused to incident beam under the electricity of different mean square amplitude drives control signal function, and it is the liquid crystal phase shift plate of delay phase of light wave under power-off state; Liquid crystal astigmatism microlens array implements the astigmatism operation of controlled divergence degree under the electricity of different mean square amplitude drives control signal function to incident beam, it is the liquid crystal phase shift plate of delay phase of light wave under power-off state; The liquid crystal phase shift plate converted to after electrically-controlled liquid crystal optically focused microlens array and liquid crystal astigmatism microlens array are de-energized forms the unlatching state of photoswitch, and the liquid crystal phase shift plate converted to after electrically-controlled liquid crystal astigmatism microlens array and liquid crystal optically focused microlens array are de-energized forms the pass closed state of photoswitch; By distinguishing optically focused and the astigmatism usefulness of automatically controlled modulation liquid crystal optically focused microlens array and liquid crystal astigmatism microlens array, the open and close completing its transmission channel of varying strength wave beam switch.
Preferably, described electrically-controlled liquid crystal optically focused microlens array and described electrically-controlled liquid crystal astigmatism microlens array are M × N unit, and wherein, M, N are the integer being greater than 1; Each unit liquid crystal optically focused lenticule and the lenticular activity coefficient of liquid crystal astigmatism are all lower than 40%, and namely every unit liquid crystal microlens only performs the light action region area converging or disperse operation account for the long-pending ratio of lenticule light entrance face lower than 40% by projecting the axial light beam of its light.
Preferably, described electrically-controlled liquid crystal optically focused lenticule is made up of the micron order thickness liquid crystal material be encapsulated between end face micropore shape electrode and bottom surface public electrode, described electrically-controlled liquid crystal astigmatism lenticule by being encapsulated in end face public electrode and bottom surface ring micropore shape interelectrode micron order thickness liquid crystal material is formed, the center vertical line of micropore, ring micropore and face electrode with corresponding liquid crystal optically focused lenticule and the lenticular optical axis coincidence of liquid crystal astigmatism.
Preferably, the described electrically-controlled liquid crystal array of photoswitch be made up of electrically-controlled liquid crystal optically focused microlens array and electrically-controlled liquid crystal astigmatism microlens array hybrid integrated is also M × N unit.
Preferably, also comprise ceramic package, wherein, described electrically-controlled liquid crystal optically focused microlens array is positioned at the front of described electrically-controlled liquid crystal astigmatism microlens array and is coaxially sequentially placed in ceramic package, every unit liquid crystal optically focused lenticule and the lenticular optical axis coincidence of every unit liquid crystal astigmatism; The light entrance face of described electrically-controlled liquid crystal optically focused microlens array is outside exposed by the front perforate of described ceramic package, and the light-emitting face of described electrically-controlled liquid crystal astigmatism microlens array is outside exposed by the back side perforate of described ceramic package.
Preferably, described electrically-controlled liquid crystal optically focused microlens array is provided with the first port and the first pilot lamp, described first port drives control signal for the electricity accessing external unit and input to described liquid crystal optically focused microlens array, and described first pilot lamp is used to indicate described electrically-controlled liquid crystal optically focused microlens array and whether is in normal electricity and drives control signal input state;
Preferably, described electrically-controlled liquid crystal astigmatism microlens array is provided with the second port and the second pilot lamp, described second port drives control signal for the electricity accessing external unit and input to described liquid crystal astigmatism microlens array, and described second pilot lamp is used to indicate described electrically-controlled liquid crystal astigmatism microlens array and whether is in normal electricity and drives control signal input state.
Preferably, described upper right two side coupling parts at ceramic package are provided with a little triangle symbol near upper side one end of light-emitting face, in order to the light-emitting face position of pilot light switch.
The above technical scheme conceived by the present invention compared with prior art, has following beneficial effect:
1, drive control signal based on electricity and control the break-make of optical transmission pathway, there is electronics control mode versatile and flexible, easily and the advantage of other optics, photoelectricity or electronics structure Coupling;
2, owing to all there is promotor action to polarization or non-polarized light beam, have the advantages that the polarization adaptability of wave beam is good;
3, owing to being performed the automatically controlled bending of light beam by functionalization film liquid crystal, have the advantages that to be adapted to wider wave spectrum and larger beam intensity mobility scale;
4, the integrated morphology of the microminiaturization of switch and planar end represent good structure adaptability, can insert in light path flexibly or be integrated in optical link;
5, cost of manufacture is low, relative low price.
Accompanying drawing explanation
Fig. 1 is front (light entrance face) structural representation of a kind of hybrid integrated electrically-controlled liquid crystal array of photoswitch of the embodiment of the present invention;
Fig. 2 is the back side (light-emitting face) structural representation of a kind of hybrid integrated electrically-controlled liquid crystal array of photoswitch of the embodiment of the present invention;
Fig. 3 is the fundamental diagram of a kind of hybrid integrated electrically-controlled liquid crystal array of photoswitch of the embodiment of the present invention;
Fig. 4 is fiber bundle coupling and the beam channel break-make schematic diagram of a kind of hybrid integrated electrically-controlled liquid crystal array of photoswitch of the embodiment of the present invention.
In all of the figs, identical Reference numeral is used for representing identical element or structure, wherein:
1-ceramic package, 2-first port, 3-first pilot lamp, 4-second port, 5-second pilot lamp, 6-light-emitting face designated symbol, 7-light entrance face, 8-light-emitting face.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.In addition, if below in described each embodiment of the present invention involved technical characteristic do not form conflict each other and just can mutually combine.
Fig. 1 is front (light entrance face) structural representation of a kind of hybrid integrated electrically-controlled liquid crystal array of photoswitch of the embodiment of the present invention, and Fig. 2 is the back side (light-emitting face) structural representation of a kind of hybrid integrated electrically-controlled liquid crystal array of photoswitch of the embodiment of the present invention.As shown in the figure, electrically-controlled liquid crystal optically focused microlens array and electrically-controlled liquid crystal astigmatism microlens array are placed in ceramic package 1 by same optical axis hybrid integrated, wherein, electrically-controlled liquid crystal optically focused microlens array is positioned at the front of electrically-controlled liquid crystal astigmatism microlens array, the light entrance face of electrically-controlled liquid crystal optically focused microlens array is outside exposed by the front perforate of ceramic package 1, and the light-emitting face of electrically-controlled liquid crystal astigmatism microlens array is outside exposed by the back side perforate of ceramic package 1.
Fig. 3 is the fundamental diagram of a kind of hybrid integrated electrically-controlled liquid crystal array of photoswitch of the embodiment of the present invention.As shown in the figure, the basic functional units of photoswitch is formed by the upper and lower two-layer liquid crystal micro optical structure of hybrid integrated.Upper strata liquid crystal micro optical structure is made up of the micron order thickness liquid crystal material be encapsulated between end face micropore shape electrode and bottom surface public electrode, lower floor's liquid crystal micro optical structure by being encapsulated in end face public electrode and bottom surface ring micropore shape interelectrode micron order thickness liquid crystal material is formed, the center vertical line of micropore and ring micropore with corresponding liquid crystal optically focused lenticule and the lenticular optical axis coincidence of liquid crystal astigmatism.Electrically-controlled liquid crystal optically focused microlens array implements the operation of adjustable focus optically focused to incident beam under the electricity of different mean square amplitude drives control signal function, and it is the liquid crystal phase shift plate of delay phase of light wave under power-off state; Electrically-controlled liquid crystal astigmatism microlens array implements the astigmatism operation of controlled divergence degree under the electricity of different mean square amplitude drives control signal function to incident beam, it is the liquid crystal phase shift plate of delay phase of light wave under power-off state; The liquid crystal phase shift plate be converted into after electrically-controlled liquid crystal optically focused microlens array and the power-off of liquid crystal astigmatism microlens array forms the unlatching state of photoswitch, and the liquid crystal phase shift plate that electrically-controlled liquid crystal astigmatism microlens array and the power-off of liquid crystal optically focused microlens array are converted into forms the pass closed state of photoswitch; By distinguishing optically focused and the astigmatism usefulness of modulation electrically-controlled liquid crystal optically focused microlens array and electrically-controlled liquid crystal astigmatism microlens array, the automatically controlled open and close completing its transmission channel of varying strength wave beam switch.
Electrically-controlled liquid crystal optically focused microlens array and electrically-controlled liquid crystal astigmatism microlens array are M × N unit, and wherein, M, N are the integer being greater than 1.The electrically-controlled liquid crystal array of photoswitch be made up of electrically-controlled liquid crystal optically focused microlens array and electrically-controlled liquid crystal astigmatism microlens array hybrid integrated is also M × N unit.Such as, 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 even more large scale arrays.Electrically-controlled liquid crystal array of photoswitch is placed between two optical fiber or two optical fiber bunch, complete optical fiber to or optical fiber bunch between beam Propagation path switch on or off operation; Every unit electrically-controlled liquid crystal photoswitch is coupled with optical axis with every root incoming fiber optic with on light-emitting face at its light entrance face, complete light wave between optical fiber in subsequent transmissions or path cut off.Equivalent display electrically-controlled liquid crystal optically focused lenticule and electrically-controlled liquid crystal astigmatism lenticular light beam bending situation is come with the refraction condensation of conventional curved surface profile and refraction astigmatism lenticule in figure.
Fig. 4 is that a kind of hybrid integrated electrically-controlled liquid crystal array of photoswitch of the embodiment of the present invention is coupled with optical fiber bunch and realizes the schematic diagram of optical circuit and closedown.As shown in the figure, the optical fiber up and down bunch on 6 × 6 tunnels opens the light with the light on 6 × 6 tunnels respectively and is coupled, and each corresponding optical fiber now in upper and lower side optical fiber bunch and corresponding photoswitch are laid with optical axis.Under optical circuit state, the light beam in the optical fiber of top is imported in the optical fiber of bottom; Under light path closes closed state, the light beam in the optical fiber of top is dispersed by electrically-controlled liquid crystal astigmatism lenticule and cannot enter in the optical fiber of bottom.
Electrically-controlled liquid crystal optically focused microlens array is provided with the first port 2, first pilot lamp 3, wherein, first port 2 drives control signal for inputting the electricity loaded on liquid crystal structure, first pilot lamp 3 in order to show electricity drive control signal whether effectively accessed, electricity drives control signal and is normally accessed, then the first pilot lamp 3 glimmers, otherwise extinguishes; Electrically-controlled liquid crystal astigmatism microlens array is provided with the second port 4, second pilot lamp 5, wherein, second port 4 drives control signal for inputting the electricity loaded on liquid crystal structure, second pilot lamp 5 in order to show electricity drive control signal whether effectively accessed, electricity drives control signal and is normally accessed, then the second pilot lamp 5 glimmers, otherwise extinguishes.
Above-mentioned first port 2, second port 4, first pilot lamp 3, second pilot lamp 5 all by ceramic package 1=lateral opening hole is outside exposed.
The course of work of a kind of hybrid integrated electrically-controlled liquid crystal array of photoswitch of the embodiment of the present invention is described below in conjunction with Fig. 1, Fig. 2 and Fig. 3.
First the first port 2 and the second port 4 is connected with parallel signal line.The electricity sending into liquid crystal structure by the first port 2 and the second port 4 by parallel signal line drives control signal, now the first pilot lamp 3 and the second pilot lamp 5 hook switch flash, self-inspection is extinguished by rear first pilot lamp 3 and the second pilot lamp 5, and the liquid crystal micro optical structure in electrically-controlled liquid crystal photoswitch enters duty.
Send into electricity by signal wire by the first port 2 and drive control signal, drive the electrically-controlled liquid crystal optically focused microlens array that control liquid crystal micro optical structure is rendered as converging beam, now the first pilot lamp 3 hook switch flash, meanwhile, the signal driving control liquid crystal micro optical structure be carried on the second port 4 is cut off, liquid crystal micro optical structure is converted into the liquid crystal phase shift plate postponing light wave, and electrically-controlled liquid crystal photoswitch starts to carry out the light-path making operation between the fine light beam in front and back.Send into electricity by signal wire by the second port 4 and drive control signal, drive the electrically-controlled liquid crystal astigmatism microlens array that control liquid crystal micro optical structure is rendered as divergent beams, now the second pilot lamp 5 hook switch flash, meanwhile, the signal driving control liquid crystal micro optical structure be carried on the first port 2 is cut off, liquid crystal micro optical structure is converted into the liquid crystal phase shift plate postponing light wave, and photoswitch starts to carry out the light-path shutoff operation between the fine light beam in front and back.
As shown in Figure 3, the optically focused that unit hybrid integrated electrically-controlled liquid crystal photoswitch performs incident beam by the electrically-controlled liquid crystal optically focused lenticule being placed in electrically-controlled liquid crystal astigmatism lenticule top operates, converging beam passes through by being converted in the liquid crystal micro optical structure of liquid crystal phase shift plate by liquid crystal astigmatism lenticule after being de-energized, and completes the beam Propagation path open operation of electrically-controlled liquid crystal photoswitch; After the electricity be carried on electrically-controlled liquid crystal optically focused lenticule being driven the removal of control signal, liquid crystal optically focused lenticule is converted into liquid crystal phase shift plate, and meanwhile, the liquid crystal structure of bottom is resumed and powers up and convert electrically-controlled liquid crystal astigmatism lenticule to; The electrically-controlled liquid crystal astigmatism lenticule of bottom is entered after passing liquid crystal phase shift plate by the light beam of top incidence, due to cannot to be entered by dispersing at the lenticular light exit side of electrically-controlled liquid crystal astigmatism in the fiber core layer that is coupled, thus complete the shutoff operation of optical transmission pathway.
Hybrid integrated electrically-controlled liquid crystal array of photoswitch of the present invention adopts electrically-controlled liquid crystal optically focused microlens array and the mixed integrated mode of electrically-controlled liquid crystal astigmatism microlens array, and execution is coupled with optical fiber or optical fiber bunch and connects.By powering up in order and power operation liquid crystal micro optical structure, carry out the open and close operation of beam Propagation path.It is good to have transmission light wave polarization adaptability, is applicable to the feature of the automatically controlled opening and closing between wide spectral range and the large optical fiber of beam intensity mobility scale or optical cable.
In general, the above technical scheme conceived by the present invention compared with 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 powered up in order or power-off to perform photoswitch operation; The liquid crystal optically focused built under electricity drives the excitation of control signal and astigmatism microlens array, be converted into liquid crystal phase shift plate under power-off state; Electrically-controlled liquid crystal microlens array is coupled with liquid crystal phase shift plate and forms the Kong Guang topworks of photoswitch, realizes opening and cutting off of arrayed optical path.Above-mentioned switch body fixture has and drives based on electricity the break-make that control signal performs optical transmission pathway and switch, and is applicable to spectral range is wide, beam intensity mobility scale is large optical fiber or fiberoptic cable system.Liquid crystal optically focused or the lenticular array scale of astigmatism larger, the number of fibers that photoswitch can be coupled is larger.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a hybrid integrated electrically-controlled liquid crystal array of photoswitch, comprises electrically-controlled liquid crystal optically focused microlens array and electrically-controlled liquid crystal astigmatism microlens array, it is characterized in that,
Described electrically-controlled liquid crystal optically focused microlens array implements the adjustable focus optically focused operation of incident beam under the electricity of different mean square amplitude drives control signal function;
Described electrically-controlled liquid crystal optically focused microlens array is converted into the liquid crystal phase shift plate postponing phase of light wave under power-off state;
Described electrically-controlled liquid crystal astigmatism microlens array implements the controlled divergence degree astigmatism operation of incident beam under the electricity of different mean square amplitude drives control signal function;
Described electrically-controlled liquid crystal astigmatism microlens array is converted into the liquid crystal phase shift plate postponing phase of light wave under power-off state;
The liquid crystal phase shift plate be converted into after described electrically-controlled liquid crystal optically focused lenticule and the power-off of described liquid crystal astigmatism lenticule forms the unlatching state of photoswitch;
The liquid crystal phase shift plate be converted into after described electrically-controlled liquid crystal astigmatism lenticule and the power-off of described liquid crystal optically focused lenticule forms the pass closed state of photoswitch.
2. hybrid integrated electrically-controlled liquid crystal array of photoswitch as claimed in claim 1, it is characterized in that, by distinguishing optically focused and the astigmatism usefulness of electrically-controlled liquid crystal optically focused microlens array and described electrically-controlled liquid crystal astigmatism microlens array described in modulation, the automatically controlled open and close completing varying strength light beam switch.
3. hybrid integrated electrically-controlled liquid crystal array of photoswitch as claimed in claim 1, it is characterized in that, described electrically-controlled liquid crystal optically focused microlens array and described electrically-controlled liquid crystal astigmatism microlens array are M × N unit, wherein, M, N are the integer being greater than 1, and each unit electrically-controlled liquid crystal optically focused lenticule and the lenticular activity coefficient of electrically-controlled liquid crystal astigmatism are lower than 40%.
4. as claim requires the hybrid integrated electrically-controlled liquid crystal array of photoswitch described in 1, it is characterized in that, the described electrically-controlled liquid crystal array of photoswitch be made up of electrically-controlled liquid crystal optically focused microlens array and electrically-controlled liquid crystal astigmatism microlens array hybrid integrated is also M × N unit.
5. the hybrid integrated electrically-controlled liquid crystal array of photoswitch according to any one of Claims 1-4, is characterized in that, also comprise ceramic package; Wherein,
Described electrically-controlled liquid crystal optically focused microlens array and described electrically-controlled liquid crystal astigmatism microlens array are placed in ceramic package with optical axis order, wherein, described electrically-controlled liquid crystal optically focused microlens array is positioned at the front of described electrically-controlled liquid crystal astigmatism microlens array, and every unit electrically-controlled liquid crystal optically focused lenticule and the lenticular optical axis coincidence of every unit electrically-controlled liquid crystal astigmatism, the light entrance face of described electrically-controlled liquid crystal optically focused microlens array is outside exposed by the front perforate of described ceramic package, the light-emitting face of described electrically-controlled liquid crystal astigmatism microlens array is outside exposed by the back side perforate of described ceramic package.
6. hybrid integrated electrically-controlled liquid crystal array of photoswitch as described in claim 5, it is characterized in that, described electrically-controlled liquid crystal optically focused microlens array is provided with the first port, the first pilot lamp, and described electrically-controlled liquid crystal astigmatism microlens array is provided with the second port and the second pilot lamp;
Described first port drives control signal for the electricity accessing external unit and input to described liquid crystal optically focused microlens array;
Described first pilot lamp is used to indicate described liquid crystal optically focused microlens array and whether is in normal electricity and drives control signal input state;
Described second port drives control signal for the electricity accessing external unit and input to described liquid crystal astigmatism microlens array;
Described second pilot lamp is used to indicate described liquid crystal astigmatism microlens array and whether is in normal electricity and drives control signal input state.
7. hybrid integrated electrically-controlled liquid crystal array of photoswitch as claimed in claim 6, it is characterized in that, be provided with a little triangle symbol at upper right two side coupling parts of ceramic package near upper side one end of light-emitting face, the light in order to pilot light switch is appeared position.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510897626.1A CN105467628B (en) | 2015-12-07 | 2015-12-07 | A kind of hybrid integrated electrically-controlled liquid crystal array of photoswitch |
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| CN201510897626.1A CN105467628B (en) | 2015-12-07 | 2015-12-07 | A kind of hybrid integrated electrically-controlled liquid crystal array of photoswitch |
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| CN105467628A true CN105467628A (en) | 2016-04-06 |
| CN105467628B CN105467628B (en) | 2018-12-28 |
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| CN201510897626.1A Active CN105467628B (en) | 2015-12-07 | 2015-12-07 | A kind of hybrid integrated electrically-controlled liquid crystal array of photoswitch |
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| CN105467628B (en) | 2018-12-28 |
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