发明名称 |
METHOD WITH IMPROVED PHASE ROBUSTNESS IN COHERENT DETECTED OPTICAL SYSTEM |
摘要 |
An optical signal receiver tracks local oscillator frequency offset (LOFO) and compensates for the phase distortion introduced in the received signals as a result of utilizing the local oscillator within a coherent detection scheme. This phase distortion is basically a constant phase rotation caused by the LOFO and implementation of the receiver using coherent detection and a digital interferometer instead of a conventional (yet complex) carrier phase estimation or recovery scheme. With an optical receiver implemented in this manner, the requirement of using a precise local oscillator laser with low frequency offset is less important.
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申请公布号 |
US2013315609(A1) |
申请公布日期 |
2013.11.28 |
申请号 |
US201213480230 |
申请日期 |
2012.05.24 |
申请人 |
LI CHUANDONG;CHEN YUANJIE;ZHANG ZHUHONG;CAI YI;ZHU FEI;FUTUREWEI TECHNOLOGIES, INC. |
发明人 |
LI CHUANDONG;CHEN YUANJIE;ZHANG ZHUHONG;CAI YI;ZHU FEI |
分类号 |
H04B0010/000006 |
主分类号 |
H04B0010/000006 |
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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