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1. 发明授权

US10996399B2 Space-division multiplexed reconfigurable, wavelength selective switch 有权
公开(公告)号：US10996399B2
公开(公告)日：2021-05-04
申请号：US16467160
申请日：2017-12-05
申请人： Roadmap Systems Ltd
发明人： Haining Yang , Daping Chu
IPC分类号： G02B6/293 , G02B6/35 , H04B10/2581 , H04J14/04 , H04Q11/00
摘要： 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.

2. 发明申请

US20210263218A1 Multiple Wavelength Band Optical Switching Unit 有权
公开(公告)号：US20210263218A1
公开(公告)日：2021-08-26
申请号：US17255206
申请日：2019-06-19
申请人： ROADMap Systems Ltd
发明人： Brian Robertson , Daping Chu , Haining Yang
IPC分类号： G02B6/293 , G02B6/35 , G02F1/29 , H04B10/50 , H04J14/02 , H04Q11/00
摘要： An input device for a multiple wavelength band optical switch comprising: an optical demultiplexer configured to receive light and disperse the received light along a dispersion axis; and a light director configured to direct light in a first wavelength band to the optical demultiplexer at a first angle of incidence and to direct light in a second wavelength band to the optical demultiplexer at a second angle of incidence, the second angle of incidence being different from the first; wherein the difference between the first and second angles of incidence causes the demultiplexer to output dispersed spectra of light corresponding to the first and second bands such that the dispersed spectrum corresponding to the first band is overlapped along the dispersion axis and separated along a switch axis relative to the dispersed spectrum corresponding to the second wavelength band, the switch axis being perpendicular to the dispersion axis.

3. 发明授权

US10700804B2 Optical switching systems 有权
公开(公告)号：US10700804B2
公开(公告)日：2020-06-30
申请号：US16545866
申请日：2019-08-20
申请人： Roadmap Systems Ltd
发明人： Brian Robertson , Daping Chu , Haining Yang , Peter John Wilkinson
IPC分类号： H04J14/02 , H04Q11/00
摘要： 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.

4. 发明授权

US10587936B2 Optical systems 有权
公开(公告)号：US10587936B2
公开(公告)日：2020-03-10
申请号：US15762179
申请日：2016-09-19
申请人： Roadmap Systems Ltd
发明人： Haining Yang , Daping Chu , Brian Robertson
IPC分类号： H04J14/00 , H04Q11/00 , H04J14/02
摘要： A wavelength division multiplexed (WDM) reconfigurable optical switch, the switch has 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 the at least one optical input port and the plurality of optical output ports; and at least one diffractive element on an optical path between at least one optical input port and the reconfigurable holographic array, to demultiplex the WDM input optical signal into a plurality of demultiplexed optical input beam channels, and to disperse the demultiplexed optical input beam channels spatially along a first axis on said the reconfigurable holographic array; and the switch further comprises one or more beam profiling optical elements to modify transverse beam profiles of the demultiplexed optical input beam channels.

5. 发明申请

US20200021383A1 Optical Switching Systems 审中-公开
公开(公告)号：US20200021383A1
公开(公告)日：2020-01-16
申请号：US16545866
申请日：2019-08-20
申请人： Roadmap Systems Ltd
发明人： Brian Robertson , Daping Chu , Haining Yang , Peter John Wilkinson
IPC分类号： H04J14/02 , H04Q11/00
摘要： 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.

6. 发明授权

US10491322B2 Optical switching systems 有权
公开(公告)号：US10491322B2
公开(公告)日：2019-11-26
申请号：US15762137
申请日：2016-09-19
申请人： Roadmap Systems Ltd
发明人： Brian Robertson , Daping Chu , Haining Yang , Peter John Wilkinson
IPC分类号： H04J14/02 , H04Q11/00
CPC分类号： H04J14/021 , H04J14/0212 , H04Q11/0005 , H04Q2011/0016 , H04Q2011/0026 , H04Q2011/0028 , H04Q2011/0039
摘要： A wavelength division multiplexed (WDM) reconfigurable optical switch. The switch has 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 the 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 the set of arrays of optical beam connections and the first diffractive element; and a reconfigurable holographic array comprising a 2D array of reconfigurable sub-holograms defining sub-hologram rows and columns. The arrays of said set of arrays and the sub-hologram rows and columns are arranged and aligned in particular ways so that wavelength channels of the WDM input signal for each array can be steered within the device towards a selected optical output.

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