Browse Prior Art Database

Fibre-Optic Transmission System with Bypassable Repeaters

IP.com Disclosure Number: IPCOM000049617D
Original Publication Date: 1982-Jun-01
Included in the Prior Art Database: 2005-Feb-09

Publishing Venue

IBM

Related People

Authors:
Abramson, P Noel, FE [+details]

Abstract

In the case of electrical communication systems, when the distance to be traversed exceeds the maximum distance permitted by the communication system for reasons of attenuation, jitter, or any other limiting factor, a repeater is inserted into the system. For very long distances, a plurality of repeaters may be utilized. It is obvious that the failure of any repeater would completely disrupt the system. For the case where the transmission is over a pair of copper wires or a coaxial cable, the problem of the failure of a repeater is solved by connecting a relay across the input and output of the repeater. This relay effectively bypasses the failed repeater and the system remains operative. Of course, the distance between repeaters must be less than half the maximum distance permitted for reasons of attenuation, etc.