公开(公告)号：US20190035632A1

公开(公告)日：2019-01-31

申请号：US16072013

申请日：2017-01-23

申请人： UNIVERSITY OF SOUTHAMPTON

发明人： David John THOMSON ,  Graham Trevor REED ,  Robert TOPLEY

IPC分类号： H01L21/265 ,  H01L21/324 ,  H01L21/67 ,  H01L21/66 ,  H01L21/268

摘要： A method of trimming the refractive index of material forming at least part of one or more structures integrated in one or more pre-fabricated devices, the method comprising: implanting one or more first regions of material of one or more pre-fabricated devices, encompassing at least partially one or more device structures, with ions to alter the crystal form of the material within the one or more first regions and change the refractive index of the material within the one or more first regions; and heat treating one or more second regions of material of the one or more devices, encompassing at least partially the one or more first regions, to alter the crystal form of the material within the one or more first regions encompassed by the one or more second regions and change the refractive index thereof, thereby trimming the refractive index of the material of at least part of the one or more device structures, such that the one or more device structures provide one or more predetermined device outputs.

公开(公告)号：US20230006760A1

公开(公告)日：2023-01-05

申请号：US17756592

申请日：2020-11-26

申请人： UNIVERSITY OF SOUTHAMPTON

发明人： Ke LI ,  David John THOMSON ,  Shenghao LIU ,  Graham Trevor REED ,  Weiwei ZHANG ,  Wei CAO

IPC分类号： H04J14/08 ,  H04Q11/00

摘要： A method of generating multiple channels of optical pulses comprises: providing a continuous wave optical input having an optical power; dividing the optical power of the optical input into equal consecutive slices in the time domain; and allocating the consecutive slices sequentially to two or more optical outputs such that each output forms a channel of optical pulses of equal pulse repetition rate shifted in time relative to the or each other channel.

公开(公告)号：US20220131616A1

公开(公告)日：2022-04-28

申请号：US17436192

申请日：2020-02-26

申请人： University of Southampton

发明人： Graham Trevor REED ,  Ke LI ,  Sheghao LIU ,  David John THOMSON

IPC分类号： H04B10/54 ,  H04B10/079 ,  H04B10/2513

摘要： An optical modulation system comprises a signal source configured to generate an amplitude modulated electrical signal having a bandwidth and divided into frequency components comprising at least a first frequency component covering a first portion of the bandwidth and a second frequency component covering a second portion of the bandwidth; and an electro-optic modulator for receiving an input optical signal, the modulator having a first optical path and a second optical path, the input optical signal being divided between the first optical path and the second optical path and recombined after propagation along the first optical path and the second optical path to produce an output optical signal, and at least one of the first optical path and the second optical path comprising a phase shifter comprising a pair of electrodes in which each electrode is configured to receive a driving signal; wherein the or each phase shifter is coupled to the signal source to receive at least one of said frequency components as a driving signal for an electrode, and the phase shifters are arranged such that the or each phase shifter receives a different pair of driving signals.