Original document(6 pages) Authorized document(6 pages) 中文版
    Optical switching arrangement for switching a number of optical signals, consists of a thermo-optic switch having a number of heaters which are heated by passing electrical current through them. The mark-space ratio of current supplied from a constant voltage source is varied to provide constant power to the heaters to compensate for resistance changes in the heaters.
Application Number
00104133 Application Date
Title 名称 Optic switching device
Publication Number
1267171 Publication Date
Approval Pub. Date 2004.04.07 Granted Pub. Date 2004.04.07
International Classification 分类号 H04Q3/52
Applicant(s) Name
Marconi Communications Ltd.
Address 地址
Inventor(s) Name 发明人 M. G. Backer;H. R. Cralingborn
Attorney & Agent 代理人 wu zengyong

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