TELEPHONE SET FOR OPTICAL FIBERS LINES

摘要

A telephone set for optical fibers lines having a coupler for directing a first part of the light received from the input optical fiber on a photo-cell and a second part of this light on a microphone modulating this second part without electrical intermediate apparatus, the photocell feed alternately a bell or a receiver, and the light modulated by the microphone is directed via a dialling system on the output optical fiber.