Optical coupler and method of accessing a transmission fiber

Abstract From the Canadian patent

An optical bypass switch includes a normal state and a bypass state a, transmission optical fiber having a signal withdrawn therefrom and injected thereto in, its normal state so as to be capable of use in a ring or bus architecture. In the bypass, state of the switch, the transmission optical fiber is substantially disengaged so that a, signal being transmitted thereby can bypass the switch and in this state , optical fibers, connected to a transmitter and a receiver of the bypass switch are maintained in a bent, attitude so as to allow signals to be withdrawn and injected thereinto. A loop back, path, e.g. a connector optical fiber is provided which allows a path between the, …