发明申请
- 专利标题： NON-RECIPROCAL UNIT USED FOR POLARIZATION DEPENDENT TYPE OPTICAL ISOLATOR AND POLARIZATION DEPENDENT TYPE OPTICAL ISOLATOR
- 专利标题（中）： 用于偏振相关型光学隔离器和极化型光学隔离器的非聚光单元
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申请号： US12988234申请日： 2009-08-06
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公开(公告)号： US20110038046A1公开(公告)日： 2011-02-17
- 发明人: Takuya Kawamura , Masayuki Kimura , Masayuki Togawa
- 申请人： Takuya Kawamura , Masayuki Kimura , Masayuki Togawa
- 申请人地址： JP Matsudo-shi, Chiba
- 专利权人： SEIKOH GIKEN CO., LTD.
- 当前专利权人： SEIKOH GIKEN CO., LTD.
- 当前专利权人地址： JP Matsudo-shi, Chiba
- 优先权： JP2008-202648 20080806
- 国际申请： PCT/JP2009/063933 WO 20090806
- 主分类号： G02B5/30
- IPC分类号： G02B5/30
摘要：
Provided are a non-reciprocal unit used for a polarization dependent type optical isolator and a polarization dependent type optical isolator that are simple in structure, can prevent damages due to light and heat and can obtain a high extinction ratio. In a polarization dependent type optical isolator, an input side lens (first lens) (5), a first birefringence unit (7), a Faraday rotator (9), a second birefringence unit (11) and an output side lens (second lens) (15) are arranged from the input side to the output side. The polarization dependent type optical isolator (1) is connected with optical fibers (3, 17) on the input and output sides, respectively, wherein a wedge angle (θ1) of the first birefringence unit (7) is different from a wedge angle (θ2) of the second birefringence unit (11).
公开/授权文献
- US08891166B2 Polarization dependent type optical isolator 公开/授权日：2014-11-18
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