CN117826328A - Wavelength selective optical cross device - Google Patents
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- CN117826328A CN117826328A CN202211182899.4A CN202211182899A CN117826328A CN 117826328 A CN117826328 A CN 117826328A CN 202211182899 A CN202211182899 A CN 202211182899A CN 117826328 A CN117826328 A CN 117826328A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 57
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 96
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 84
- 239000010703 silicon Substances 0.000 claims abstract description 84
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 77
- 239000013307 optical fiber Substances 0.000 claims abstract description 77
- 239000000835 fiber Substances 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 3
- 208000010119 wrinkly skin syndrome Diseases 0.000 description 20
- 238000010586 diagram Methods 0.000 description 18
- 230000010287 polarization Effects 0.000 description 3
- 101000783776 Homo sapiens Lysosomal cobalamin transporter ABCD4 Proteins 0.000 description 2
- 102100020978 Lysosomal cobalamin transporter ABCD4 Human genes 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- PCTMTFRHKVHKIS-BMFZQQSSSA-N (1s,3r,4e,6e,8e,10e,12e,14e,16e,18s,19r,20r,21s,25r,27r,30r,31r,33s,35r,37s,38r)-3-[(2r,3s,4s,5s,6r)-4-amino-3,5-dihydroxy-6-methyloxan-2-yl]oxy-19,25,27,30,31,33,35,37-octahydroxy-18,20,21-trimethyl-23-oxo-22,39-dioxabicyclo[33.3.1]nonatriaconta-4,6,8,10 Chemical compound C1C=C2C[C@@H](OS(O)(=O)=O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CCCC(C)C)[C@@]1(C)CC2.O[C@H]1[C@@H](N)[C@H](O)[C@@H](C)O[C@H]1O[C@H]1/C=C/C=C/C=C/C=C/C=C/C=C/C=C/[C@H](C)[C@@H](O)[C@@H](C)[C@H](C)OC(=O)C[C@H](O)C[C@H](O)CC[C@@H](O)[C@H](O)C[C@H](O)C[C@](O)(C[C@H](O)[C@H]2C(O)=O)O[C@H]2C1 PCTMTFRHKVHKIS-BMFZQQSSSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/32—Optical coupling means having lens focusing means positioned between opposed fibre ends
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/35—Optical coupling means having switching means
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
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- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Liquid Crystal (AREA)
Abstract
The embodiment of the application provides a wavelength selective optical cross device, which comprises: m input optical fibers 11, N output optical fibers 13, and a liquid crystal on silicon 12, wherein the liquid crystal on silicon 12 includes N regions, one region corresponding to each output optical fiber 13; the M input optical fibers 11 for broadcasting each beam of light onto N regions of the liquid crystal on silicon 12; the liquid crystal on silicon 12 is configured to select, for each of the N regions, a beam of light to be reflected onto a corresponding output optical fiber 13; the N output optical fibers 13 are used for outputting light beams, so that the problems that in the related art, an M x N unobstructed WSS module adopts two-stage silicon-based liquid crystal 12, the light path is long and the light path is difficult to realize through twice silicon-based liquid crystal 12 can be solved, the technical difficulty is equivalent to that of the current batch commercial 1xN WSS module, and the realization difficulty is greatly reduced.
Description
Technical Field
The embodiment of the application relates to the field of optical transmission, in particular to a wavelength selective optical cross device.
Background
There are two types of wavelength selective optical cross-connect devices currently available in mxn: the class 1 is M multiplied by N, which adopts a two-stage scheme of MEMS optical switch and silicon-based liquid crystal 12, and belongs to optical cross with wavelength selectivity of resistance because MEMS has no wavelength selectivity; 2.M XN unobstructed, which employs a two-stage liquid crystal on silicon 12 crossover scheme. Class 2 is an mxn unobstructed WSS, which is difficult to achieve due to the use of two stages of liquid crystal on silicon 12, long optical paths and the optical paths passing through the liquid crystal on silicon 12 twice.
Aiming at the problems that the two-stage silicon-based liquid crystal 12 is adopted in the WSS module of MXN non-resistance type in the related art, the optical path is long and the optical path is difficult to realize by passing through the silicon-based liquid crystal 12 twice, no solution is proposed.
Disclosure of Invention
The embodiment of the application provides a wavelength selective optical cross device, so as to at least solve the problem that in the related art, an MxN unobstructed WSS module adopts a two-stage liquid crystal on silicon 12, the optical path is long and the optical path is difficult to realize by passing through the liquid crystal on silicon 12 twice.
According to an embodiment of the present application, there is provided a wavelength selective optical cross-over device including: the optical fiber module comprises M input optical fibers 11, N output optical fibers 13 and a liquid crystal on silicon 12, wherein the liquid crystal on silicon 12 comprises N areas, and one area corresponds to one output optical fiber 13;
the M input optical fibers 11 are used for broadcasting each beam of light onto N areas of the liquid crystal on silicon 12;
the liquid crystal on silicon 12 is configured to select, for each of the N regions, a beam of light to be reflected onto a corresponding output optical fiber 13;
the N output optical fibers 13 are used for outputting light beams.
In an embodiment, the wavelength selective optical cross-over device further comprises: a first lens device 21 and a first grating device 22, wherein,
the first lens device 21 is configured to expand the light beams input by the M input optical fibers 11;
the first grating device 22 is configured to refract the light beam expanded by the first lens device 21 onto N regions of the liquid crystal on silicon 12;
the liquid crystal on silicon 12 is further configured to output the N area light beams onto the first grating device 22;
the first grating device 22 is further configured to combine the N light beams output by the liquid crystal on silicon 12;
the first lens device 21 is further configured to reduce the N beams after combination, and output the N reduced beams to the N output optical fibers 13.
In an embodiment, the wavelength selective optical cross-over device further comprises: a first polarizer 31 and a second polarizer 32, wherein the first polarizer 31 is disposed between the M input optical fibers 11 and the first lens device 21, the second polarizer 32 is disposed between the first lens device 21 and the N output optical fibers 13,
the first polarizer 31 is configured to demultiplex the light beams input by the M input optical fibers 11 into horizontal polarized light and vertical polarized light, respectively, to obtain M pairs of horizontal polarized light and vertical polarized light;
the first lens device 21 is further configured to expand the M pairs of horizontally polarized light and vertically polarized light;
the first grating device 22 is further configured to refract the M pairs of horizontally polarized light and vertically polarized light expanded by the first lens device 21 onto N regions of the liquid crystal on silicon 12;
the liquid crystal on silicon 12 is further configured to output horizontally polarized light and vertically polarized light of the N regions to the first grating device 22;
the first grating device 22 is further configured to combine the N pairs of horizontally polarized light and vertically polarized light output by the lc-on-silicon 12;
the first lens device 21 is further configured to reduce the N pairs of horizontally polarized light and vertically polarized light after combination;
the second polarizer 32 is further configured to multiplex the reduced N pairs of horizontally polarized light with vertically polarized light to obtain N light beams, and output the N light beams to the N corresponding output optical fibers 13.
In an embodiment, the wavelength selective optical cross-over device further comprises: a first lens device 21, a first grating device 22, a second grating device 23, and a second lens device 24, wherein,
the first lens device 21 is configured to expand the light beams input by the M input optical fibers 11;
the first grating device 22 is configured to refract the light beam expanded by the first lens device 21 onto N regions of the liquid crystal on silicon 12;
the liquid crystal on silicon 12 is further configured to output the N area light beams onto the first grating device 22;
the second grating device 23 is further configured to combine the N light beams output by the liquid crystal on silicon 12;
the second lens device 24 is further configured to reduce the N combined light beams, and output the reduced N light beams to the corresponding N output optical fibers 13.
In an embodiment, the wavelength selective optical cross-over device further comprises: a first polarizer 31 and a second polarizer 32, wherein the first polarizer 31 is disposed between the M input optical fibers 11 and the first lens device 21, the second polarizer 32 is disposed between the second lens device 24 and the N output optical fibers 13,
the first polarizer 31 is configured to demultiplex the light beams input by the M input optical fibers 11 into horizontal polarized light and vertical polarized light, respectively, to obtain M pairs of horizontal polarized light and vertical polarized light;
the first lens device 21 is further configured to expand the M pairs of horizontally polarized light and vertically polarized light;
the first grating device 22 is further configured to refract the M pairs of horizontally polarized light and vertically polarized light expanded by the first lens device 21 onto N regions of the liquid crystal on silicon 12;
the liquid crystal on silicon 12 is further configured to output horizontally polarized light and vertically polarized light of the N regions to the second grating device 23;
the second grating device 23 is further configured to combine the N pairs of horizontally polarized light and vertically polarized light output by the liquid crystal on silicon 12;
the second lens device 24 is further configured to reduce the N pairs of horizontally polarized light and vertically polarized light after combination;
the second polarizer 32 is further configured to multiplex the reduced N pairs of horizontally polarized light with vertically polarized light to obtain N light beams, and output the N light beams to the N corresponding output optical fibers 13.
In one embodiment, the first lens device 21 and the second lens device 24 are convex lenses.
In an embodiment, the first lens device 21 is further configured to expand the pixels of the light beams input by the M input optical fibers 11 to more than 10 pixels.
In one embodiment, the pixel matrix of the liquid crystal on silicon 12 is divided into the N regions.
In one embodiment, the reflected light angles of the N regions of the lc-on-silicon 12 are independently set.
In one embodiment, the reflected light angles of the N regions of the lc-on-silicon 12 are the same or different.
The wavelength selective optical cross device according to the embodiment of the application comprises: the optical fiber module comprises M input optical fibers 11, N output optical fibers 13 and a liquid crystal on silicon 12, wherein the liquid crystal on silicon 12 comprises N areas, and one area corresponds to one output optical fiber 13; the M input optical fibers 11 are used for broadcasting each beam of light onto N areas of the liquid crystal on silicon 12; the liquid crystal on silicon 12 is configured to select, for each of the N regions, a beam of light to be reflected onto a corresponding output optical fiber 13; the N output optical fibers 13 are used for outputting light beams, so that the problem that in the related art, the m×n unobstructed WSS module adopts the two-stage silicon-based liquid crystal 12, the light path is long and the light path is difficult to realize due to the two-time silicon-based liquid crystal 12 is solved, the one-stage silicon-based liquid crystal 12 is adopted, the technical difficulty is equivalent to that of the current batch commercial 1×n WSS module, and the realization difficulty is greatly reduced.
Drawings
FIG. 1 is a schematic diagram of a wavelength selective optical cross-over device according to an embodiment of the present application;
FIG. 2 is a schematic illustration of a wavelength selective optical cross-device in accordance with an alternative embodiment of the present application;
FIG. 3 is a schematic diagram II of a wavelength selective optical cross-device in accordance with an alternative embodiment of the present application;
FIG. 4 is a schematic diagram III of a wavelength selective optical cross-device in accordance with an alternative embodiment of the present application;
FIG. 5 is a schematic diagram IV of a wavelength selective optical cross-device according to an alternative embodiment of the present application;
fig. 6 is a schematic diagram of an 8×4 unobstructed WSS module according to this embodiment;
fig. 7 is a schematic diagram of a long distance or metropolitan optical crossover network according to this embodiment;
fig. 8 is a system block diagram of the WSS apparatus according to the present embodiment.
Detailed Description
Embodiments of the present application will be described in detail below with reference to the accompanying drawings in conjunction with the embodiments.
It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.
In this embodiment, there is provided a wavelength selective optical cross-over device, fig. 1 is a schematic diagram of the wavelength selective optical cross-over device according to an embodiment of the present application, and as shown in fig. 1, the wavelength selective optical cross-over device includes: m input optical fibers 11, N output optical fibers 13, and a liquid crystal on silicon 12, wherein the liquid crystal on silicon 12 includes N regions, one region corresponding to each output optical fiber 13;
m input optical fibers 11 for broadcasting each beam of light onto N regions of the liquid crystal on silicon 12;
a liquid crystal on silicon 12, configured to select, for each of the N regions, a beam of light to be reflected onto a corresponding output optical fiber 13;
and N output optical fibers 13 for outputting the light beams.
Fig. 2 is a schematic diagram of a wavelength selective optical cross-device according to an alternative embodiment of the present application, as shown in fig. 2, the wavelength selective optical cross-device further including: a first lens device 21 and a first grating device 22, wherein,
a first lens device 21 for expanding the light beams inputted from the M input optical fibers 11;
a first grating device 22 for refracting the light beam expanded by the first lens device 21 onto N regions of the liquid crystal on silicon 12;
the liquid crystal on silicon 12 is further configured to output the N area light beams onto the first grating device 22;
the first grating device 22 is further configured to combine the N light beams output by the liquid crystal on silicon 12;
the first lens device 21 is further configured to reduce the N beams after combination, and output the N reduced beams to the N output optical fibers 13.
Fig. 3 is a schematic diagram ii of a wavelength selective optical cross-device according to an alternative embodiment of the present application, as shown in fig. 3, the wavelength selective optical cross-device further comprising: a first polarizer 31 and a second polarizer 32, wherein the first polarizer 31 is disposed between the M input optical fibers 11 and the first lens device 21, the second polarizer 32 is disposed between the first lens device 21 and the N output optical fibers 13,
a first polarizer 31 for demultiplexing the input light beams of the M input optical fibers 11 into horizontally polarized light and vertically polarized light, respectively, to obtain M pairs of horizontally polarized light and vertically polarized light;
the first lens device 21 is further configured to expand the M pairs of horizontally polarized light and vertically polarized light;
the first grating device 22 is further configured to refract the M pairs of horizontally polarized light and vertically polarized light expanded by the first lens device 21 onto N regions of the liquid crystal on silicon 12;
the liquid crystal on silicon 12 is further configured to output the horizontally polarized light and the vertically polarized light of the N regions to the first grating device 22;
the first grating device 22 is further configured to combine the N pairs of horizontally polarized light and vertically polarized light output by the liquid crystal on silicon 12;
the first lens device 21 is further configured to reduce the N pairs of horizontally polarized light and vertically polarized light after combination;
the second polarizer 32 is further configured to multiplex the reduced N pairs of horizontally polarized light with vertically polarized light to obtain N light beams, and output the N light beams to the corresponding N output optical fibers 13.
Fig. 4 is a schematic diagram three of a wavelength selective optical cross-device according to an alternative embodiment of the present application, as shown in fig. 4, the wavelength selective optical cross-device further comprising: a first lens device 21, a first grating device 22, a second grating device 23, and a second lens device 24, wherein,
a first lens device 21 for expanding the light beams inputted from the M input optical fibers 11;
a first grating device 22 for refracting the light beam expanded by the first lens device 21 onto N regions of the liquid crystal on silicon 12;
the liquid crystal on silicon 12 is further configured to output the N area light beams onto the first grating device 22;
the second grating device 23 is further configured to combine the N light beams output by the liquid crystal on silicon 12;
the second lens device 24 is further configured to reduce the N combined light beams, and output the reduced N light beams to the corresponding N output optical fibers 13.
Fig. 5 is a schematic diagram four of a wavelength selective optical cross-device according to an alternative embodiment of the present application, as shown in fig. 5, the wavelength selective optical cross-device further comprising: a first polarizer 31 and a second polarizer 32, wherein the first polarizer 31 is disposed between the M input optical fibers 11 and the first lens device 21, the second polarizer 32 is disposed between the second lens device 24 and the N output optical fibers 13,
a first polarizer 31 for demultiplexing the input light beams of the M input optical fibers 11 into horizontally polarized light and vertically polarized light, respectively, to obtain M pairs of horizontally polarized light and vertically polarized light;
the first lens device 21 is further configured to expand the M pairs of horizontally polarized light and vertically polarized light;
the first grating device 22 is further configured to refract the M pairs of horizontally polarized light and vertically polarized light expanded by the first lens device 21 onto N regions of the liquid crystal on silicon 12;
the liquid crystal on silicon 12 is further configured to output the horizontally polarized light and the vertically polarized light of the N regions to the second grating device 23;
the second grating device 23 is further configured to combine the N pairs of horizontally polarized light and vertically polarized light output by the liquid crystal on silicon 12;
a second lens device 24, configured to reduce the N pairs of horizontally polarized light and vertically polarized light after combination;
the second polarizer 32 is further configured to multiplex the reduced N pairs of horizontally polarized light with vertically polarized light to obtain N light beams, and output the N light beams to the corresponding N output optical fibers 13.
In an embodiment, the first lens device 21 is further used to expand the pixels of the light beams input by the M input optical fibers 11 to more than 10 pixels.
In one embodiment, the pixel matrix of the liquid crystal on silicon 12 is divided into N regions.
In one embodiment, the reflected light angles of the N regions of the LCOS 12 are independently set.
In one embodiment, the reflected light angles of the N regions of the LCOS 12 are the same or different.
Fig. 6 is a schematic diagram of an 8×4 unobstructed WSS module according to this embodiment, as shown in fig. 6, in a side view, light from 8 input optical fibers 11 is split into 8 light beams with horizontal polarization (as solid lines in the drawing) or 8 light beams with vertical polarization (as broken lines in the drawing) by a first polarizer 31, and the light beams are expanded by a first lens device 21 and then are emitted to the entire lc-on-silicon plane 12, so that the lc-on-silicon plane is divided into 4 areas, which can be controlled independently, and the first area adjusts the reflection angle of the light beams with different incident angles of 16 beams emitted thereto, and the reflected light beams of one pair of horizontal (as solid lines in the drawing) and vertical polarization (as broken lines in the drawing) are incident to a first output optical fiber 13-1, and the reflected light beams of the lc-on-silicon are first condensed by a second lens device 24, and then passed through a second polarizer to combine a pair of horizontal and vertical polarized light beams. The 2 nd, 3 rd and 4 th of the silicon-based liquid crystal are respectively incident to the output optical fibers 13-2, -3, -4 fibers. The first lens element 21 and the second lens element 24 may share one element in implementation, that is, the optical path passes through the lens element twice, the first grating element 22 and the second grating element 23 may also share one element in implementation, and the light passes through 11, the first polarizer 31, the first lens element 21, the first grating element 22, the liquid crystal on silicon 12, the second grating element 23, the second lens element 24, the second polarizing element 32, and the output optical fiber 13 in order. The light output from the lc on silicon 12 is reflected and for clarity of presentation is commonly referred to in the industry as refracted light.
In a top view, the light output by the first lens device 21 is spread by wavelength by the first grating device 22, i.e. 1-N wavelength is split onto the liquid crystal on silicon 12, spread from short wavelength to long wavelength, the direction of the reflected light is changed by the liquid crystal on silicon 12, and then combined by the second grating device 23, so that light with different wavelengths can be switched to different optical fibers independently.
In the present embodiment, the first lens device 21 and the second lens device 24 are convex lenses.
Fig. 7 is a schematic diagram of a long distance or metropolitan optical cross-over network according to the present embodiment, and as shown in fig. 7, the upper half is an optical cross-over network consisting of UVWXY5 points, where the W site is composed of four subframes of ABCD. The internal schematic block diagrams of the two subframes of the AB are drawn in the lower half, the two subframes of the AB are 32 dimensions, D1 to D24 represent 24 line dimensions, the other 8 dimensions are local add-drop dimensions, one add-drop dimension is occupied for service interconnection of the two subframes, the interconnection dimension adopts 24x3WSS, and the position of the subframe is in the 24x3WSS of the lower left corner A subframe of the following diagram, and the rest is in a virtual frame. 24x3WSS wherein 24 input optical fibers are connected with 24 line dimensions, 3 output optical fibers are connected to the B sub-frame, so that service intercommunication of the AB two sub-frames is realized. The mxn WSS of the present embodiment is used for interconnection of A, B subframes, i.e. two subframes are interconnected by the present device, so that 4 32-dimensional light is cross-expanded to 128 dimensions, and 3 interconnection curves of the W sites are the functions of the device of the present embodiment.
The m×n WSS device in this embodiment is used for a 128-dimensional optical cross scheme, i.e., ABCD4 32-dimensional subframes in the figure are interconnected by the WSS device.
The WSS device is used for improving the current CD type access scheme, can improve the reduction of dimension occupation, and has great benefits. The WSS device can replace the scheme of the current CDC type uplink and downlink after improvement, the current CDC has difficulty in the next evolution, and the WSS device in the embodiment has no difficulty in the evolution. Fig. 8 is a system block diagram of the WSS apparatus according to the present embodiment, and as shown in fig. 8, the upper half of the diagram is a conventional ABCD4 line dimensions, and the lower half is a 1 local add-drop dimension, and this dimension adopts two 9x2 WSSs and two 2x9 WSSs to form the present embodiment, which can be equivalent to the conventional 2x 1 WSSs or 1x9 WSSs, thereby improving the integration level. Two paths E and F between a pair of 9x2 and 2x9 WSSs are connected. The traffic flow, for example, the wavelength of the a-line direction input, is switched to the local drop, and can be assigned to the bottom left-most OTU board by the 9x2WSS via the E-channel, and can also be assigned to the bottom left-most OTU via the F-channel.
When in use, the E channel is used as the main, the service is configured when the E channel is normal, the other path of F channel is used as the standby, the service is not configured when the F channel is normal, and when the main service needs to modify the wavelength and is blocked due to wavelength conflict, the E channel can be switched to the standby channel.
It will be appreciated by those skilled in the art that the modules or steps of the application described above may be implemented in a general purpose computing device, they may be concentrated on a single computing device, or distributed across a network of computing devices, they may be implemented in program code executable by computing devices, so that they may be stored in a storage device for execution by computing devices, and in some cases, the steps shown or described may be performed in a different order than that shown or described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple modules or steps of them may be fabricated into a single integrated circuit module. Thus, the present application is not limited to any specific combination of hardware and software.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the principles of the present application should be included in the protection scope of the present application.
Claims (10)
1. A wavelength selective optical cross-over device, the wavelength selective optical cross-over device comprising: the optical fiber array comprises M input optical fibers (11), N output optical fibers (13) and liquid crystal on silicon (12), wherein the liquid crystal on silicon (12) comprises N areas, and one area corresponds to one output optical fiber (13);
-said M input fibers (11) for broadcasting each light beam onto N areas of said liquid crystal on silicon (12);
the liquid crystal on silicon (12) is used for selecting a beam of light to reflect to a corresponding output optical fiber (13) for each of the N areas;
the N output optical fibers (13) are used for outputting light beams.
2. The wavelength selective optical cross-device of claim 1, wherein the wavelength selective optical cross-device further comprises: a first lens device (21) and a first grating device (22), wherein,
-said first lens means (21) for expanding the light beams input by said M input fibers (11);
the first grating device (22) is used for refracting the light beam expanded by the first lens device (21) onto N areas of the liquid crystal on silicon (12);
-said liquid crystal on silicon (12) further for outputting light beams of said N regions onto said first grating device (22);
the first grating device (22) is further used for combining N light beams output by the liquid crystal on silicon (12);
the first lens device (21) is further configured to reduce the N beams after combination, and output the N reduced beams to the N output optical fibers (13) corresponding to the N output optical fibers.
3. The wavelength selective optical cross-device of claim 2, wherein the wavelength selective optical cross-device further comprises: a first polarizer (31) and a second polarizer (32), wherein the first polarizer (31) is disposed between the M input optical fibers (11) and the first lens device (21), the second polarizer (32) is disposed between the first lens device (21) and the N output optical fibers (13),
the first polarizer (31) is configured to demultiplex the light beams input by the M input optical fibers (11) into horizontally polarized light and vertically polarized light, respectively, to obtain M pairs of horizontally polarized light and vertically polarized light;
-said first lens device (21) further for expanding said M pairs of horizontally polarized light and vertically polarized light;
the first grating device (22) is further used for refracting the M pairs of horizontally polarized light and vertically polarized light expanded by the first lens device (21) onto N areas of the liquid crystal on silicon (12);
the liquid crystal on silicon (12) is further configured to output horizontally polarized light and vertically polarized light of the N regions onto the first grating device (22);
the first grating device (22) is further used for combining N pairs of horizontally polarized light and vertically polarized light output by the liquid crystal on silicon (12);
the first lens device (21) is further used for shrinking the N pairs of horizontally polarized light and the N pairs of vertically polarized light after combination;
the second polarizer (32) is further configured to multiplex the reduced N pairs of horizontally polarized light with vertically polarized light to obtain N light beams, and output the N light beams to the N corresponding output optical fibers (13).
4. The wavelength selective optical cross-device of claim 1, wherein the wavelength selective optical cross-device further comprises: a first lens device (21), a first grating device (22), a second grating device (23) and a second lens device (24), wherein,
-said first lens means (21) for expanding the light beams input by said M input fibers (11);
the first grating device (22) is used for refracting the light beam expanded by the first lens device (21) onto N areas of the liquid crystal on silicon (12);
-said liquid crystal on silicon (12) further for outputting light beams of said N regions onto said first grating device (22);
the second grating device (23) is further used for combining the N light beams output by the liquid crystal on silicon (12);
the second lens device (24) is further configured to reduce the N combined light beams, and output the reduced N light beams to the corresponding N output optical fibers (13).
5. The wavelength selective optical cross-device of claim 4, wherein the wavelength selective optical cross-device further comprises: a first polarizer (31) and a second polarizer (32), wherein the first polarizer (31) is disposed between the M input optical fibers (11) and the first lens device (21), the second polarizer (32) is disposed between the second lens device (24) and the N output optical fibers (13),
the first polarizer (31) is configured to demultiplex the light beams input by the M input optical fibers (11) into horizontally polarized light and vertically polarized light, respectively, to obtain M pairs of horizontally polarized light and vertically polarized light;
-said first lens device (21) further for expanding said M pairs of horizontally polarized light and vertically polarized light;
the first grating device (22) is further used for refracting the M pairs of horizontally polarized light and vertically polarized light expanded by the first lens device (21) onto N areas of the liquid crystal on silicon (12);
the liquid crystal on silicon (12) is further configured to output horizontally polarized light and vertically polarized light of the N regions onto the second grating device (23);
the second grating device (23) is further used for combining N pairs of horizontally polarized light and vertically polarized light output by the liquid crystal on silicon (12);
the second lens device (24) is further used for shrinking the N pairs of horizontally polarized light and the N pairs of vertically polarized light after combination;
the second polarizer (32) is further configured to multiplex the reduced N pairs of horizontally polarized light with vertically polarized light to obtain N light beams, and output the N light beams to the N corresponding output optical fibers (13).
6. The wavelength selective optical cross-device according to claim 4 or 5, wherein said first lens means (21) and said second lens means (24) are convex lenses.
7. The wavelength selective optical cross-device according to claim 2 or 4, wherein,
the first lens device (21) is further used for expanding pixels of light beams input by the M input optical fibers (11) to be more than 10 pixels.
8. The wavelength selective optical cross-device of claim 1 wherein,
the pixel matrix of the liquid crystal on silicon (12) is divided into the N regions.
9. The wavelength selective optical cross-device of claim 1 wherein,
the reflected light angles of the N regions of the liquid crystal on silicon (12) are independently set.
10. The wavelength selective optical cross-device of claim 9, wherein,
the reflected light angles of the N regions of the liquid crystal on silicon (12) are the same or different.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211182899.4A CN117826328A (en) | 2022-09-27 | 2022-09-27 | Wavelength selective optical cross device |
| PCT/CN2023/108729 WO2024066695A1 (en) | 2022-09-27 | 2023-07-21 | Wavelength-selective optical cross apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211182899.4A CN117826328A (en) | 2022-09-27 | 2022-09-27 | Wavelength selective optical cross device |
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| CN117826328A true CN117826328A (en) | 2024-04-05 |
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| CN202211182899.4A Pending CN117826328A (en) | 2022-09-27 | 2022-09-27 | Wavelength selective optical cross device |
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| JP4960294B2 (en) * | 2008-04-17 | 2012-06-27 | 日本電信電話株式会社 | Wavelength selective switch |
| JP2012028929A (en) * | 2010-07-21 | 2012-02-09 | Sun Tec Kk | Wavelength selection optical cross-connect device |
| CN104597572B (en) * | 2015-01-16 | 2017-07-18 | 华中科技大学 | A kind of wavelength-selective switches based on liquid crystal on silicon |
| JP6251202B2 (en) * | 2015-01-27 | 2017-12-20 | 日本電信電話株式会社 | Wavelength selective switch |
| CN104777557B (en) * | 2015-04-29 | 2018-01-02 | 武汉邮电科学研究院 | Multiport variable bandwidth wavelength-selective switches based on LCOS |
| CN108121036B (en) * | 2016-11-29 | 2019-11-22 | 华为技术有限公司 | A kind of wavelength-selective switches and light signal transmission system |
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