公开(公告)号：US07684711B2

公开(公告)日：2010-03-23

申请号：US11568185

申请日：2005-04-21

申请人： Steve Desbruslais ,  John Ellison ,  David Powell

发明人： Steve Desbruslais ,  John Ellison ,  David Powell

IPC分类号： H04B10/02

CPC分类号： H04B10/035 ,  H04B10/0771 ,  H04B2210/078

摘要： An optical transmission system comprises two optical fibers carrying optical signal traffic between two terminals, and a plurality of optical repeaters coupled to the two fibers each repeater having a permanently connected passive high loss loop back circuit between the two fibers. One terminal includes a transmitter, which launches a pulsed supervisory signal on a dedicated supervisory wavelength into one optical fiber, and a receiver, which detects a portion of the supervisory signal looped back from each repeater in order to identify the existence and location of faults in the transmission system. The pulsed supervisory signal is of sufficiently short duration such that portions of the signal returned from each repeater do not overlap with one another and interference with the counter-propagating traffic is avoided by utilizing a dedicated supervisory wavelength. Each return pulse is integrated sequentially by a single detector and processed by heterodyne reception and synchronous demodulation.

摘要翻译： 光传输系统包括在两个终端之间承载光信号业务的两个光纤和耦合到两个光纤的多个光中继器，每个中继器在两个光纤之间具有永久连接的被动高损耗环回电路。 一个终端包括发射机，其将专用监控波长的脉冲监控信号发射到一个光纤中;以及接收机，其检测从每个中继器回送的监控信号的一部分，以便识别故障的存在和位置 传输系统。 脉冲监控信号具有足够短的持续时间，使得从每个中继器返回的信号的部分彼此不重叠，并且通过利用专用监控波长来避免与反向传播业务的干扰。 每个返回脉冲由单个检测器依次集成，并通过外差接收和同步解调进行处理。

公开(公告)号：US20090154919A1

公开(公告)日：2009-06-18

申请号：US11568185

申请日：2005-04-21

申请人： Steve Desbruslais ,  John Ellison ,  David Powell

发明人： Steve Desbruslais ,  John Ellison ,  David Powell

IPC分类号： H04B10/08 ,  H04B10/00

CPC分类号： H04B10/035 ,  H04B10/0771 ,  H04B2210/078

摘要： An optical transmission system comprises two optical fibbers carrying optical signal traffic between two terminals, and a plurality of optical repeaters coupled to the two fibers each repeater having a permanently connected passive high loss loop back circuit between the two fibers. One terminal includes a transmitter, which launches a pulsed supervisory signal on a dedicated supervisory wavelength into one optical fiber, and a receiver, which detects a portion of the supervisory signal looped back from each repeater in order to identify the existence and location of faults in the transmission system. The pulsed supervisory signal is of sufficiently short duration such that portions of the signal returned from each repeater do not overlap with one another and interference with the counter-propagating traffic is avoided by utilising a dedicated supervisory wavelength. Each return pulse is integrated sequentially by a single detector and processed by heterodyne reception and synchronous demodulation.

摘要翻译： 光传输系统包括两个在两个终端之间承载光信号业务的光纤，以及耦合到两个光纤的多个光中继器，每个中继器在两个光纤之间具有永久连接的被动高损耗环回电路。 一个终端包括发射机，其将专用监控波长的脉冲监控信号发射到一个光纤中;以及接收机，其检测从每个中继器回送的监控信号的一部分，以便识别故障的存在和位置 传输系统。 脉冲监控信号具有足够短的持续时间，使得从每个中继器返回的信号的部分彼此不重叠，并且通过利用专用监控波长来避免与反向传播业务的干扰。 每个返回脉冲由单个检测器依次集成，并通过外差接收和同步解调进行处理。