发明公开
- 专利标题： Optical switch
- 专利标题（中）： Optischer Schalter。
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申请号： EP81101638.5申请日： 1981-03-06
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公开(公告)号： EP0042907A1公开(公告)日： 1982-01-06
- 发明人: Brady, Michael John , Gregor, Lawrence Vincent , Johnson, Mark
- 申请人： International Business Machines Corporation
- 申请人地址： Old Orchard Road Armonk, N.Y. 10504 US
- 专利权人： International Business Machines Corporation
- 当前专利权人： International Business Machines Corporation
- 当前专利权人地址： Old Orchard Road Armonk, N.Y. 10504 US
- 代理机构： Ahlman, Bertel
- 优先权： US164389 19800630
- 主分类号： G02B6/24
- IPC分类号： G02B6/24 ; G02F1/00
摘要：
An optical switch (10) is interposed between two light paths (12,14) comprising optical fibres (20,22) and focusing elements (24,26). The switch includes a toroidal enclosure (28) filled with a transparent fluid 40 and a ferrofluid pellet (30) whose rest position is below the space between the light paths which are coupled through the transparent fluid. Electrical coils (32,34) surround the focusing elements and are energisable to generate a magnetic field to move the ferrofluid pellet to a position between the light paths, in which the opacity of the ferrofluid uncouples the light paths. Additional coils (36,38) may be energised to return the ferrofluid pellet upon de-energisation of the coils (32,34).
公开/授权文献
- EP0042907B1 Optical switch 公开/授权日：1986-08-13
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