发明授权
- 专利标题: Optical polarization controller
- 专利标题(中): 光偏振控制器
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申请号: US417679申请日: 1995-04-06
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公开(公告)号: US5596441A公开(公告)日: 1997-01-21
- 发明人: Nobuhiro Sakakibara , Kazuo Aida , Kiyoshi Nakagawa
- 申请人: Nobuhiro Sakakibara , Kazuo Aida , Kiyoshi Nakagawa
- 申请人地址: JPX Tokyo JPX Tokyo
- 专利权人: Ando Electric Co., Ltd.,Nippon Telegraph and Telephone Corporation
- 当前专利权人: Ando Electric Co., Ltd.,Nippon Telegraph and Telephone Corporation
- 当前专利权人地址: JPX Tokyo JPX Tokyo
- 优先权: JPX6-075189 19940413
- 主分类号: G02F2/00
- IPC分类号: G02F2/00 ; H04B10/07 ; H04B10/25 ; H04B10/2507 ; H04B10/64 ; H04B10/06
摘要:
An optical polarization controller comprises a polarization control element, a polarizer, a light divider and a photo-detector. The polarization control element rotates a plane of polarization of an Input signal light by a rotation angle in a predetermined rotational direction and outputs the result as a rotated signal light. The polarizer extracts a component of the rotated signal light having a predetermined plane of polarization and outputs the component as a polarized signal light. The light divider divides the polarized signal light into a plurality of polarized signal lights which have the same planes of polarization as the plane of the polarized light outputted by the polarizer. The photo-detector detects a level of one of the plurality of polarized signal lights and supplies a control signal indicating the level to the polarization control element. Under this control, the plane of polarization of the signal light outputted by the polarization control element is controlled so as to correspond to the plane of polarization of the light divider.
公开/授权文献
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