Probing Method for Determining Position of Optical-fiber-cable Damage inside a Conduit

摘要

This article introduces a method for probing faulty optical fiber cables by using a combination of conventional measuring devices: an optical time domain reflectometer (OTDR) and a pipe camera. It can easily and rapidly identify the position and cause of a fault in an optical fiber cable located within an underground conduit. A field experiment identified two faults in a deliberately laid cable with an artificial cut-fiber fault and observed light leaking from one of them, demonstrating the method’s effectiveness.