公开(公告)号：US07369763B2

公开(公告)日：2008-05-06

申请号：US10281225

申请日：2002-10-28

Applicant: Nigel Richard Parsons

Inventor： Nigel Richard Parsons

IPC: H04B10/08

CPC classification number: H04B10/071

Abstract: An apparatus and a method for monitoring an optical transmission line. An optical pilot signal of a predetermined duration is transmitted along said optical transmission line and a return signal is sent back from a signal returner along the same transmission line corresponding to at least part of said optical pilot signal. The signal returner is positioned at a predetermined point along the optical transmission line. An optical detection apparatus detects said optical pilot signal and also detects said return signal. A monitoring unit receives detection signals from said optical detection apparatus and determins the time relationship between the predetermined duration of the optical pilot signal and the round-trip transit time of the optical pilot signal. A first monitoring signal is generated when the determined time relationship has a predetermined value, and at least one further monitoring signal is generated in other cases.

Abstract translation: 一种用于监测光传输线路的装置和方法。 沿着所述光传输线传输预定持续时间的光导频信号，并且从对应于所述光导频信号的至少一部分的相同传输线从信号恢复器发回返回信号。 信号恢复器位于沿光传输线的预定点。 光检测装置检测所述光导频信号并检测所述返回信号。 监视单元从所述光检测装置接收检测信号，并确定光导频信号的预定持续时间与光导频信号的往返行进时间之间的时间关系。 当确定的时间关系具有预定值时产生第一监视信号，并且在其他情况下产生至少一个另外的监控信号。

公开(公告)号：US06731879B1

公开(公告)日：2004-05-04

申请号：US09638905

申请日：2000-08-15

Applicant: David Antony Frisch ,  Nigel Richard Parsons

Inventor： David Antony Frisch ,  Nigel Richard Parsons

IPC: H04B1000

CPC classification number: H04B10/032

Abstract: To diminish the risk of interruption of traffic in a submarine optical cable system in the region of the shore where damage is most likely to occur, the landing-stage of the system has duplicated spaced-apart cables between a submerged branching unit and an onshore submarine line terminal endstation. Various changeover modes are disclosed, including those where both cables are coupled to signals at all times and changeover is accomplished by blocking amplifiers.

Abstract translation: 为了减少海岸光缆系统在最可能发生损坏的海岸光缆系统中断的风险，系统的着陆阶段在淹没的分支单元和陆上潜艇之间具有重复的间隔开的电缆 线路终端站。 公开了各种转换模式，包括其中两个电缆一直耦合到信号并且通过阻塞放大器来实现转换的模式。