发明名称 |
Low-coherence reflectometer with polarization control |
摘要 |
A photocoupler 3 splits the light from a low-coherence light source 1 into measuring light DL and local oscillator light KL. A photocoupler 5 receives measuring light DL arid is input to an optical circuit 7 to be measured. The photocoupler 5 splits the reflected light RL. A polarization controller 9 controls the state of polarization of the reflected light RL as split by the photocoupler 5. A photocoupler 13 allows local oscillator light KL to be incident on a reflector mirror 16 and splits local oscillator light KL. A photocoupler 11 combines the reflected light RL as controlled in the state of polarization by the polarization controller 9, with the local oscillator light KL.
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申请公布号 |
US6775005(B2) |
申请公布日期 |
2004.08.10 |
申请号 |
US20020084407 |
申请日期 |
2002.02.25 |
申请人 |
ANDO ELECTRIC CO., LTD.;NIPPON TELEGRAPH AND TELEPHONE CORPORATION |
发明人 |
AKIKUNI FUMIO;AOKI SHOICHI;YANO TETSUO;MORI TOHRU;TAKADA KAZUMASA |
分类号 |
G01N21/49;G01M11/00;G01M11/02;G01N21/17;(IPC1-7):G01B9/02 |
主分类号 |
G01N21/49 |
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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