公开(公告)号：US07209660B1

公开(公告)日：2007-04-24

申请号：US09728373

申请日：2000-11-28

申请人： Ting K Yee ,  Peter H Chang

发明人： Ting K Yee ,  Peter H Chang

IPC分类号： H04B10/145 ,  H04B10/148 ,  H04B10/207 ,  H04B10/04 ,  H04B10/06 ,  H04J14/02 ,  H04J1/04 ,  H04J1/06 ,  H04J1/08

CPC分类号： H04J14/005 ,  H04B10/50 ,  H04B10/61 ,  H04B10/6151 ,  H04B10/64 ,  H04J14/02 ,  H04J14/0298

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.

摘要翻译： 光通信系统包括具有至少两个外差接收器的接收器子系统。 接收器子系统接收具有两个或多个信息子带和对应音调的复合光信号。 光分路器将复合光信号分解为光信号。 每个光信号包括一个子带和相应的音调。 每个外差接收器接收光信号。 接收机包括耦合到信号提取器的外差检测器。 外差检测器将光学信号与光学本地振荡器混合以产生包括子带的频率下变换版本和光信号的色调的电信号。 信号提取器将频移下变频子频带与下变频音调混合以产生包含信息的频率分量。

公开(公告)号：US07146103B2

公开(公告)日：2006-12-05

申请号：US09918886

申请日：2001-07-30

申请人： Ting K Yee ,  Peter H Chang ,  Shin-Sheng Tarng ,  Gregory M Cutler ,  Slava Yazhgur ,  Ji Li ,  Laurence J Newell ,  James F Coward ,  Michael W Rowan ,  Norman L Swenson ,  Matthew C Bashaw

发明人： Ting K Yee ,  Peter H Chang ,  Shin-Sheng Tarng ,  Gregory M Cutler ,  Slava Yazhgur ,  Ji Li ,  Laurence J Newell ,  James F Coward ,  Michael W Rowan ,  Norman L Swenson ,  Matthew C Bashaw

IPC分类号： H04J14/02 ,  H04J1/00 ,  H04J1/04 ,  H04J1/08 ,  H04B10/04 ,  H04B10/05 ,  H04B10/08 ,  H04B10/145 ,  H04B10/148

CPC分类号： H04B10/2507 ,  H04B10/532 ,  H04B10/61 ,  H04B10/614 ,  H04B10/6151 ,  H04B10/64

摘要： A transmitter subsystem generates an optical signal which contains multiple subbands of information. The subbands have different polarization. For example, in one approach, two or more optical transmitters generate optical signals which have different polarization. An optical combiner optically combines the optical signals into a composite optical signal for transmission across an optical fiber. In another aspect, each optical transmitter generates an optical signal containing both a lower optical sideband and an upper optical sideband (i.e., a double sideband optical signal). An optical filter selects the upper optical sideband of one optical signal and the lower optical sideband of another optical signal to produce a composite optical signal.

摘要翻译： 发射机子系统产生包含多个信息子带的光信号。 子带具有不同的极化。 例如，在一种方法中，两个或更多个光发射器产生具有不同极化的光信号。 光学组合器将光学信号光学地组合成用于跨光纤传输的复合光信号。 在另一方面，每个光发射机产生包含下光边带和上光边带（即，双边带光信号）的光信号。 光滤波器选择一个光信号的上光边带和另一光信号的下光边带产生复合光信号。