公开(公告)号：US10432302B1

公开(公告)日：2019-10-01

申请号：US15633707

申请日：2017-06-26

Applicant: Amazon Technologies, Inc.

Inventor： Edgard Alberto Delgado ,  Kevin Giblin ,  Sean Smyth ,  Matthew Connolly

IPC: H04B10/071 ,  H04B10/073 ,  G01M11/00 ,  H04B10/40 ,  H04J14/02

Abstract: Optical fiber communication systems include monitor filters that permit OTDR or other monitoring signals to co-propagate or counter-propagate on link fibers. OTDR measurements are periodically triggered, and acquired OTDR signatures are compared with store signatures to locate faults. The monitor filter can be used in single direction, dual OTDR bidirectional, or signal OTDR bidirectional (loopback) monitoring.