发明名称 |
Filter selector |
摘要 |
<p>In an optical telecommunications system using wave division multiplexing (WDM) a wavelength add-drop multiplexer (WADM) has an array of adjacently connected filters, each for selecting light of a respective wavelength being transmitted in a multiplexed data stream along an optical fibre, each of the array of filters being adjacently connected to a portion of the array which is a nominally transparent filter and having means for moving the array so that movement between filters in use occurs via the nominally transparent filter portion of the array. Further, in a method of operating a WADM the transition between two filters of an array of filters each for selecting light of a respective wavelength being transmitted in a multiplexed data stream along an optical fibre occurs by way of a nominally transparent filter portion of the array. <IMAGE></p> |
申请公布号 |
EP0887964(A2) |
申请公布日期 |
1998.12.30 |
申请号 |
EP19980301850 |
申请日期 |
1998.03.12 |
申请人 |
MARCONI UK INTELLECTUAL PROPERTY LTD |
发明人 |
FERGUSON, STEPHEN PATRICK;THORLEY, ANTHONY MICHAEL |
分类号 |
G02B26/00;G02B6/34;H04J14/00;H04J14/02;(IPC1-7):G02B6/293 |
主分类号 |
G02B26/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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