Coupling device for optical fibres.

摘要

The device is intended for multiplexing and demultiplexing. It is characterised by the fact that it comprises, for coupling one cable of fibres (1) called the principal cable and two cables of fibres (2, 3) called secondary cables, two optical systems (61, 62, 63, 4 or 7, 5) formed by, on the one hand, a dichroic reflector element (4 or 5) which receives from each fibre of the principal cable (1) a light beam and splits it into two light beams, the ranges of wavelengths of which are separate, which are transmitted to two fibres of the two secondary cables (2, 3) or which receives from two fibres of the two secondary cables two light beams, the ranges of wavelengths of which are separate, and combines them into a single light beam transmitted to one fibre of the principal cable and by, on the other hand, at least one convergent objective (61, 62, 63 or 7) in such a way that an objective (61 or 7) is placed between the said dichroic reflector element (4 or 5) and the principal cable (1). <IMAGE>