发明名称 |
Low-coherence reflectometer |
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 and 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. |
申请公布号 |
EP1235063(A3) |
申请公布日期 |
2006.04.05 |
申请号 |
EP20020004405 |
申请日期 |
2002.02.26 |
申请人 |
YOKOGAWA ELECTRIC CORPORATION;NIPPON TELEGRAPH AND TELEPHONE CORPORATION |
发明人 |
AKIKUNI, FUMIO;AOKI, SHOICHI;YANO, TETSUO;MORI, TOHRU;TAKADA, KAZUMASA |
分类号 |
G01M11/00;G01N21/49;G01M11/02;G01N21/17 |
主分类号 |
G01M11/00 |
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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