公开(公告)号：WO2018104725A1

公开(公告)日：2018-06-14

申请号：PCT/GB2017/053668

申请日：2017-12-05

Applicant: ROADMAP SYSTEMS LTD

Inventor： YANG, Haining ,  CHU, Daping

IPC: H04Q11/00 ,  H04J14/04 ,  H04B10/2581 ,  G02B6/35

Abstract: We describe a space-division multiplexed (SDM) fibre, reconfigurable, wavelength- selective switch (WSS). The switch comprises a space-division multiplexed (SDM) optical input port to receive a space-division multiplexed (SDM) optical input signal comprising a plurality of space division modes each of said space division modes carrying a respective data signal, wherein each of said space division modes is also wavelength division multiplexed (WDM); an optical space division demultiplexer, coupled to said input port, to split said space-division multiplexed (SDM) optical input signal into a plurality of space division demultiplexed optical signals on separate demultiplexer outputs of said demultiplexer, each said demultiplexer output of said demultiplexer comprising a wavelength division multiplexed one of said plurality of space division modes; a set of reconfigurable wavelength-selective optical switches, each reconfigurable wavelength-selective optical switch having a switch input and a set of N switch outputs, and each including a dispersive element and a controllable beam steering element such that each said reconfigurable wavelength-selective optical switch is reconfigurable to selectively direct different respective wavelengths of a WDM optical signal at said switch input to different selected outputs of said set of N switch outputs, and wherein each said demultiplexer output is coupled to said switch input of a respective one of said set of reconfigurable wavelength-selective optical switches; and a set of optical space division multiplexers, one for each of said N switch outputs, each said optical space division multiplexer having a set of multiplexer inputs and a multiplexer output, to re-multiplex optical signals at said multiplexer inputs into a space- division multiplexed optical output signal at said multiplexer output, and wherein, for each of said set of optical space division multiplexers, each multiplexer input of said set of multiplexer inputs is coupled to said switch output of a different respective one of said set of reconfigurable wavelength-selective optical switches.

公开(公告)号：WO2017051157A1

公开(公告)日：2017-03-30

申请号：PCT/GB2016/052912

申请日：2016-09-19

Applicant: ROADMAP SYSTEMS LTD

Inventor： ROBERTSON, Brian ,  CHU, Daping ,  YANG, Haining ,  WILKINSON, Peter John

IPC: H04Q11/00 ,  H04J14/02

CPC classification number: H04Q11/0005 ,  H04J14/0212 ,  H04Q2011/0016 ,  H04Q2011/0026 ,  H04Q2011/0028 ,  H04Q2011/0039

Abstract: We describe a wavelength division multiplexed (WDM) reconfigurable optical switch, the switch comprising: a set of arrays of optical beam connections, each comprising an array of optical outputs and having an optical input to receive a WDM input optical signal; a first diffractive element to demultiplexed said WDM input optical signal into a plurality of demultiplexed optical input beams, and to disperse said demultiplexed optical input beams spatially along a first axis; first relay optics between said set of arrays of optical beam connections and said first diffractive element; and a reconfigurable holographic array comprising a 2D array of reconfigurable sub- holograms defining sub-hologram rows and columns; wherein said arrays of said set of arrays are at least one dimensional arrays extending spatially in a direction parallel to said first axis and arranged in a column defining a second axis orthogonal to said first axis; wherein said sub-hologram rows are aligned along said first axis, and wherein said sub-hologram columns are aligned along said second axis; wherein a number of said sub-hologram rows corresponds to a number of arrays in said set of arrays; and wherein each sub-hologram row is configured to receive a set of demultiplexed optical input beams at different carrier wavelengths demultiplexed from the optical input for the array of the set of arrays to which the row corresponds; wherein each of said sub- holograms in a sub-hologram row is reconfigurable to steer a respective wavelength channel of the WDM input signal for the array to which the sub-hologram row corresponds, towards a selected said optical output for the array; and wherein each said sub-hologram row is configured to steer the demultiplexed optical input beams for a respective array of the set of arrays of optical beam connections.

Abstract translation: 我们描述了波分复用（WDM）可重配置光开关，该开关包括：一组光束连接阵列，每组包括光输出阵列，并具有用于接收WDM输入光信号的光输入; 第一衍射元件，用于将所述WDM输入光信号解复用为多个解复用的光输入光束，并且沿着第一轴在空间上分散所述解复用的光输入光束; 所述一组光束连接阵列和所述第一衍射元件之间的第一中继光学器件; 以及包括限定子全息图行和列的可重构子全息图的2D阵列的可重构全息阵列; 其中所述阵列组的所述阵列是在平行于所述第一轴线的方向上空间延伸的至少一维阵列，并且被布置在限定与所述第一轴线正交的第二轴线的列中; 其中所述副全息图行沿着所述第一轴线对齐，并且其中所述子全息图列沿着所述第二轴线对齐; 其中所述子全息图行的数量对应于所述阵列组中的数量; 并且其中每个子全息图行被配置为接收从所述行对应的所述阵列阵列的所述光学输入解复用的不同载波波长处的解复用的光输入波束集合; 其中子全息图行中的每个所述子全息图是可重构的，用于将所述子全息图行对应的阵列的WDM输入信号的相应波长通道转向所选阵列阵列的所述光输出; 并且其中每个所述子全息图行被配置为引导所述解复用的光学输入光束用于所述一组光束连接阵列的相应阵列。

公开(公告)号：WO2017051158A1

公开(公告)日：2017-03-30

申请号：PCT/GB2016/052913

申请日：2016-09-19

Applicant: ROADMAP SYSTEMS LTD

Inventor： YANG, Haining ,  CHU, Daping ,  ROBERTSON, Brian

IPC: H04Q11/00 ,  H04J14/02

CPC classification number: H04Q11/0005 ,  H04J14/0212 ,  H04Q2011/0016 ,  H04Q2011/0026 ,  H04Q2011/0028 ,  H04Q2011/0039

Abstract: We describe a wavelength division multiplexed (WDM) reconfigurable optical switch, the switch comprising: at least one optical input port to receive a WDM input optical signal comprising a plurality of wavelength channels; a plurality of optical output ports;a reconfigurable holographic array on an optical path between said at least one optical input port and said plurality of optical output ports; and at least one diffractive element on an optical path between at least one optical input port and said reconfigurable holographic array, to demultiplex said WDM input optical signal into a plurality of demultiplexed optical input beam channels, and to disperse said demultiplexed optical input beam channels spatially along a first axis on said reconfigurable holographic array; wherein said reconfigurable holographic array comprises an array of configurable sub-holograms, said array extending along said first axis, wherein a sub- hologram is configured to direct a demultiplexed optical input beam channel to a respective selected one of said optical outputs; and wherein the switch further comprises one or more beam profiling optical elements to modify transverse beam profiles of said demultiplexed optical input beam channels to a said beam profile and/or steepen its sides and/or modify the profile so that it better fits a rectangular envelope.

Abstract translation: 我们描述了波分复用（WDM）可重配置光开关，该开关包括：至少一个光输入端口，用于接收包括多个波长信道的WDM输入光信号; 多个光输出端口;在所述至少一个光输入端口和所述多个光输出端口之间的光路上的可重构全息阵列; 以及在至少一个光输入端口和所述可重配置全息阵列之间的光路上的至少一个衍射元件，以将所述WDM输入光信号解复用为多个解复用的光输入波束通道，并且在空间上分散所述解复用的光输入光束通道 沿着所述可重构全息阵列上的第一轴; 其中所述可重配置全息阵列包括可配置子全息图阵列，所述阵列沿着所述第一轴线延伸，其中子全息图被配置为将解复用的光输入波束通道引导到所述光输出中的相应选定的一个; 并且其中所述开关还包括一个或多个光束轮廓光学元件，以将所述解复用的光学输入光束通道的横向光束轮廓修改为所述光束轮廓和/或使其侧面陡峭和/或修改轮廓，使得其更好地适合矩形包络线 。