公开(公告)号：US20060291868A1

公开(公告)日：2006-12-28

申请号：US11513956

申请日：2006-08-31

申请人： Ting Yee ,  Peter Chang ,  Shin-Sheng Tarng ,  Gregory Cutler ,  Slava Yazhgur ,  Ji Li ,  Laurence Newell ,  James Coward ,  Michael Rowan ,  Norman Swenson ,  Matthew Bashaw

发明人： Ting Yee ,  Peter Chang ,  Shin-Sheng Tarng ,  Gregory Cutler ,  Slava Yazhgur ,  Ji Li ,  Laurence Newell ,  James Coward ,  Michael Rowan ,  Norman Swenson ,  Matthew Bashaw

IPC分类号： H04B10/00

CPC分类号： H04B10/50 ,  H04B10/61 ,  H04B10/64

摘要： A transmitter subsystem generates an optical signal which contains multiple subbands of information. The subbands have different polarizations. For example, in one approach, two or more optical transmitters generate optical signals which have different polarizations. An optical combiner optically combines the optical signals into a composite optical signal for transmission across an optical fiber. In another approach, a single optical transmitter generates an optical signal with multiple subbands. The polarization of the subbands is varied, for example by using a birefringent crystal. In another aspect of the invention, 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.

公开(公告)号：US20070154223A1

公开(公告)日：2007-07-05

申请号：US11683210

申请日：2007-03-07

申请人： Laurence Newell ,  James Coward

发明人： Laurence Newell ,  James Coward

IPC分类号： H04B10/12

CPC分类号： B82Y15/00 ,  H04B10/2507 ,  H04B10/2513 ,  H04B10/2569 ,  H04J1/065 ,  H04J1/14 ,  H04J3/0685 ,  H04J14/02 ,  H04J14/0221 ,  H04J14/0298 ,  H04L5/06 ,  H04L29/12207 ,  H04L61/20

摘要： Attenuation caused by dispersion in an optical fiber communications system is compensated. A number of low-speed channels is to be transmitted across an optical fiber. Each low-speed channel is allocated a different frequency band for transmission. The attenuation caused by dispersion is estimated for each of the frequency bands. The power of each low-speed channel is adjusted to compensate for the estimated attenuation. The power-adjusted low-speed channels are frequency division multiplexed together to produce an electrical high-speed channel suitable for transmission across the communications system.

摘要翻译： 由光纤通信系统中的色散引起的衰减得到补偿。 许多低速通道将通过光纤传输。 每个低速信道被分配不同的频带用于传输。 对于每个频带估计由色散引起的衰减。 调整每个低速通道的功率以补偿估计的衰减。 经功率调节的低速信道被频分复用在一起以产生适合于跨通信系统传输的电高速信道。

公开(公告)号：US20070133993A1

公开(公告)日：2007-06-14

申请号：US11514381

申请日：2006-08-31

申请人： Ting Yee ,  Peter Chang ,  Shin-Sheng Tarng ,  Gregory Cutler ,  Slava Yazhgur ,  Ji Li ,  Laurence Newell ,  James Coward ,  Michael Rowan ,  Norman Swenson ,  Matthew Bashaw

发明人： Ting Yee ,  Peter Chang ,  Shin-Sheng Tarng ,  Gregory Cutler ,  Slava Yazhgur ,  Ji Li ,  Laurence Newell ,  James Coward ,  Michael Rowan ,  Norman Swenson ,  Matthew Bashaw

IPC分类号： H04J14/02

CPC分类号： H04B10/50 ,  H04B10/61 ,  H04B10/64

摘要： A transmitter subsystem generates an optical signal which contains multiple subbands of information. The subbands have different polarizations. For example, in one approach, two or more optical transmitters generate optical signals which have different polarizations. An optical combiner optically combines the optical signals into a composite optical signal for transmission across an optical fiber. In another approach, a single optical transmitter generates an optical signal with multiple subbands. The polarization of the subbands is varied, for example by using a birefringent crystal. In another aspect of the invention, 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机产生具有不同偏振的光信号。 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。 在另一种方法中，单个光发射机产生具有多个子带的光信号。 例如通过使用双折射晶体来改变子带的极化。 在本发明的另一方面，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。