发明名称 |
Signal light monitoring apparatus, optical amplification apparatus and optical reception apparatus, and signal light monitoring method |
摘要 |
According to an aspect of an embodiment, an apparatus includes an optical branching unit for branching an input signal light in four directions, a polarization component extraction unit extracting four polarization components having mutually different polarization parameters from lights branched in four directions by the optical branching unit, and a determination unit determining input/non-input of the signal light based on the four polarization components extracted by the polarization component extraction unit. |
申请公布号 |
US8705168(B2) |
申请公布日期 |
2014.04.22 |
申请号 |
US201213476351 |
申请日期 |
2012.05.21 |
申请人 |
YUKI MASAHIRO;NAKAMURA KENTARO;ISHIKAWA GEORGE;FUJITSU LIMITED |
发明人 |
YUKI MASAHIRO;NAKAMURA KENTARO;ISHIKAWA GEORGE |
分类号 |
G02B5/30 |
主分类号 |
G02B5/30 |
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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