公开(公告)号：US07616618B2

公开(公告)日：2009-11-10

申请号：US11289259

申请日：2005-11-29

申请人： P. Vijay Kumar ,  Reza Omrani ,  Joseph D. Touch ,  Alan E. Willner ,  Poorya Saghari

发明人： P. Vijay Kumar ,  Reza Omrani ,  Joseph D. Touch ,  Alan E. Willner ,  Poorya Saghari

IPC分类号： H04B7/216

CPC分类号： H04J14/007 ,  H04J13/004 ,  H04J13/18

摘要： An optical code division multiple access (OCDMA) system includes an optical transmitter system configured to transmit data from a plurality of users through a shared optical channel by encoding the data from each user with a spreading code assigned to that user. Each spreading code includes a unique sequence of T time chips along a time axis. The data from each user is representable by T symbols. The OCDMA system further includes an optical receiver system configured to demodulate the data from each user by correlating signals received from the transmitter system with the spreading code assigned to that user. When transmitting a data symbol for each user, the transmitter system selects one out of T distinct cyclic shifts of the spreading code assigned to that user, and transmits the selected cyclic shift of the assigned spreading code along the time axis.

摘要翻译： 光码分多址（OCDMA）系统包括：光发射机系统，被配置为通过共享光信道从具有分配给该用户的扩展码对来自每个用户的数据进行编码来发送来自多个用户的数据。 每个扩展码包括沿着时间轴的T个时间码片的唯一序列。 来自每个用户的数据可由T符号表示。 OCDMA系统还包括光接收机系统，其被配置为通过将从发射机系统接收的信号与分配给该用户的扩展码相关联来解调来自每个用户的数据。 当为每个用户发送数据符号时，发射机系统选择分配给该用户的扩展码的T个不同循环移位中的一个，并沿着时间轴发送所分配的扩展码的所选循环移位。

公开(公告)号：US08081883B2

公开(公告)日：2011-12-20

申请号：US12730487

申请日：2010-03-24

申请人： Guobin Liu ,  Jianping Su ,  An-Nien Chen ,  Poorya Saghari ,  Hui Xu

发明人： Guobin Liu ,  Jianping Su ,  An-Nien Chen ,  Poorya Saghari ,  Hui Xu

IPC分类号： H04B10/04

CPC分类号： H01S5/0683 ,  H01S5/005 ,  H01S5/0427 ,  H01S5/0617 ,  H01S5/4025 ,  H04B10/40 ,  H04B10/564

摘要： A method and an apparatus are provided for use in a parallel optical transmitter or transceiver to compensate for variations in optical crosstalk in an optical output power monitoring system that are caused by lasers being enabled and/or disabled. In particular, the method and apparatus cause adjustments to be made to the reference value of each optical channel based on determinations of whether one or more lasers of the other optical channels have been disabled or enabled. By making these adjustments, the average optical output power level of each laser of each channel can be maintained at a desired or required level even if one or more of the lasers of one or more of the other channels is enabled or disabled.

摘要翻译： 提供了一种用于并行光发射器或收发器中的方法和装置，用于补偿光输出功率监控系统中由激光器启用和/或禁用引起的光串扰的变化。 特别地，该方法和装置根据是否已经禁用或启用了其他光通道的一个或多个激光器的确定，来调整每个光通道的基准值。 通过进行这些调整，即使一个或多个其他通道的一个或多个激光器被启用或禁用，每个通道的每个激光器的平均光输出功率电平也可以保持在期望的或所需的水平。

公开(公告)号：US20110236028A1

公开(公告)日：2011-09-29

申请号：US12730487

申请日：2010-03-24

申请人： Guobin Liu ,  Jianping Su ,  An-Nien Chen ,  Poorya Saghari ,  Hui Xu

发明人： Guobin Liu ,  Jianping Su ,  An-Nien Chen ,  Poorya Saghari ,  Hui Xu

IPC分类号： H04B10/00

CPC分类号： H01S5/0683 ,  H01S5/005 ,  H01S5/0427 ,  H01S5/0617 ,  H01S5/4025 ,  H04B10/40 ,  H04B10/564

摘要： A method and an apparatus are provided for use in a parallel optical transmitter or transceiver to compensate for variations in optical crosstalk in an optical output power monitoring system that are caused by lasers being enabled and/or disabled. In particular, the method and apparatus cause adjustments to be made to the reference value of each optical channel based on determinations of whether one or more lasers of the other optical channels have been disabled or enabled. By making these adjustments, the average optical output power level of each laser of each channel can be maintained at a desired or required level even if one or more of the lasers of one or more of the other channels is enabled or disabled.

摘要翻译： 提供了一种用于并行光发射器或收发器中的方法和装置，用于补偿光输出功率监控系统中由激光器启用和/或禁用引起的光串扰的变化。 特别地，该方法和装置根据是否已经禁用或启用了其他光通道的一个或多个激光器的确定，来调整每个光通道的基准值。 通过进行这些调整，即使一个或多个其他通道的一个或多个激光器被启用或禁用，每个通道的每个激光器的平均光输出功率电平也可以保持在期望的或所需的水平。

公开(公告)号：US20060209739A1

公开(公告)日：2006-09-21

申请号：US11289259

申请日：2005-11-29

申请人： P. Kumar ,  Reza Omrani ,  Joseph Touch ,  Alan Willner ,  Poorya Saghari

发明人： P. Kumar ,  Reza Omrani ,  Joseph Touch ,  Alan Willner ,  Poorya Saghari

IPC分类号： H04B7/216

CPC分类号： H04J14/007 ,  H04J13/004 ,  H04J13/18

摘要： An optical code division multiple access (OCDMA) system includes an optical transmitter system configured to transmit data from a plurality of users through a shared optical channel by encoding the data from each user with a spreading code assigned to that user. Each spreading code includes a unique sequence of T time chips along a time axis. The data from each user is representable by T symbols. The OCDMA system further includes an optical receiver system configured to demodulate the data from each user by correlating signals received from the transmitter system with the spreading code assigned to that user. When transmitting a data symbol for each user, the transmitter system selects one out of T distinct cyclic shifts of the spreading code assigned to that user, and transmits the selected cyclic shift of the assigned spreading code along the time axis.