Bidirectional link arrangement of the single-mode optical fibre bus type

Abstract

Abstract 1. Conversational connection device of the type comprising a unimodal optical fibre bus, including a bidirectional bus line and terminals for emitting and receiving information, which are connected to said bus line by bidirectional coupling means, said bus line being implemented by providing unimodal optical fibres, said device comprising a single optical source (5) which delivers luminous energy, at least one first and one second unimodal optical fibre (8, 9) constituting a first loop and a second loop, coupling means picking up luminous energy from said bus line, separating and coupling means (20) allowing the luminous energy issuing from said source (5) to be divided into two equal parts, characterized in that : - the first and second loops are unidirectional ; - the coupling means comprise at least one first and one second switch (Ci , C'i ) with a controllable luminous energy pick-up rate ; - the first loop connects in series the first switches (Ci ) of all the coupling means and the second loop connecting, inversely with respect to the first loop, the second switches (C'i ) ; - and each one of said equal parts of luminous energy is coupled to one of the ends of the two unimodal optical fibres (8, 9) ; - and in that the coupling means of the emitting terminals pick-up energy from said loops with a pick-up rate higher than that of the coupling means of the receiving terminals.

Inventors

• 👤 Luigi D'auria
• 👤 Michel Papuchon
• 👤 Jean-Paul Pocholle

Bibliographic Details