发明授权
- 专利标题： Waveguide type variable optical attenuator
- 专利标题（中）： 波导型可变光衰减器
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申请号： US10653918申请日： 2003-09-04
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公开(公告)号： US06980707B2公开(公告)日： 2005-12-27
- 发明人: Takafumi Chiba , Satoshi Takasugi , Tetsu Hasegawa , Hisato Uetsuka
- 申请人： Takafumi Chiba , Satoshi Takasugi , Tetsu Hasegawa , Hisato Uetsuka
- 申请人地址： JP Tokyo
- 专利权人： Hitachi Cable, Ltd.
- 当前专利权人： Hitachi Cable, Ltd.
- 当前专利权人地址： JP Tokyo
- 代理机构： McGinn IP Law Group, PLLC
- 优先权： JP2002-261555 20020906; JP2003-115502 20030421
- 主分类号： G02B6/00
- IPC分类号： G02B6/00 ; G02B6/12 ; G02F1/01 ; G02F1/225
摘要：
A waveguide type variable optical attenuator has: a substrate; two optical circuits that are in parallel formed on the substrate, each of the optical circuits including two couplers that conduct the branching and coupling of light and are connected to the input port and output port of light and two waveguides through which the two couplers are connected; a polarization maintaining fiber one end of which is connected to the output port of one of the two optical circuits and the other end of which is connected to the input port of the other of the two optical circuits while being twisted 90°; and a heater that is provided around neighboring waveguides of the two optical circuits such that the neighboring waveguides share heat to be generated by the heater.
公开/授权文献
- US20040047583A1 Waveguide type variable optical attenuator 公开/授权日：2004-03-11
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