发明名称 |
Optical communications using heterodyne detection |
摘要 |
An optical communications system includes a receiver subsystem with at least two heterodyne receivers. The receiver subsystem receives a composite optical signal having two or more subbands of information and corresponding tones. An optical splitter splits the composite optical signal into optical signals. Each optical signal includes a subband(s) and corresponding tone. Each heterodyne receiver receives an optical signal. The receiver includes a heterodyne detector coupled to a signal extractor. The heterodyne detector mixes the optical signal with an optical local oscillator to produce an electrical signal which includes a frequency down-shifted version of the subband and the tone of the optical signal. The signal extractor mixes the frequency down-shifted subband with the frequency down-shifted tone to produce a frequency component containing the information.
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申请公布号 |
US7209660(B1) |
申请公布日期 |
2007.04.24 |
申请号 |
US20000728373 |
申请日期 |
2000.11.28 |
申请人 |
FORSTER ENERGY LLC |
发明人 |
YEE TING K;CHANG PETER H |
分类号 |
H04B10/145;H04B10/04;H04B10/06;H04B10/148;H04B10/207;H04J1/04;H04J1/06;H04J1/08;H04J14/02 |
主分类号 |
H04B10/145 |
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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