发明申请
- 专利标题: APPARATUS AND METHODS FOR LIGHT BEAM ROUTING IN TELECOMMUNICATION
- 专利标题(中): 电子束光束路由装置及方法
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申请号: US14000203申请日: 2012-02-15
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公开(公告)号: US20150286187A1公开(公告)日: 2015-10-08
- 发明人: Neil Collings , Andreas Georgiou , Marua Michelle Redmond , Brian Robertson , Jinsong Liu , William Crossland , John Richard Moore , Daping Chu
- 申请人: Neil Collings , Andreas Georgiou , Marua Michelle Redmond , Brian Robertson , Jinsong Liu , William Crossland , John Richard Moore , Daping Chu
- 申请人地址: UK Cambridge
- 专利权人: CAMBRIDGE ENTERPRISE LIMITED
- 当前专利权人: CAMBRIDGE ENTERPRISE LIMITED
- 当前专利权人地址: UK Cambridge
- 优先权: GB1102715.8 20110216
- 国际申请: PCT/GB2012/050340 WO 20120215
- 主分类号: G03H1/08
- IPC分类号: G03H1/08 ; G02B5/32 ; G03H1/22
摘要:
We describe a LCOS (liquid crystal on silicon) telecommunications light beam routing device, the device comprising: an optical input; a plurality of optical outputs; a LCOS spatial light modulator (SLM) in an optical path between said input and said output, for displaying a kinoform; a data processor, coupled to said SLM, configured to provide kinoform data for displaying said kinoform on said SLM; wherein said kinoform data defines a kinoform which routes a beam from said optical input to a selected said optical output; wherein said data processor is configured to input routing data defining said selected optical output and to calculate said kinoform data for routing said beam responsive to said routing data; and wherein said data processor is configured to calculate said kinoform data by: determining an initial phase pattern for said kinoform; calculating a replay field of said phase pattern; modifying an amplitude component of said replay field to represent a target replay field for said beam routing, retaining a phase component of said replay field to provide an updated replay field; performing a space-frequency transform on said updated replay field to determine an updated phase pattern for said kinoform; and repeating said calculating and updating of said replay field and said performing of said space-frequency transform until said kinoform for display is determined; and outputting said data for display on said LCOS SLM.