A multichannel coupler for connecting a plurality of input fibers to a plurality of output fibers which comprises a mixing fiber coupled to the pluralities of fibers. This mixing fiber is cut along a transversal cut and the two parts thus obtained are secured end to end. At least one of the surfaces...http://www.google.fr/patents/US4193661?utm_source=gb-gplus-shareBrevet US4193661 - Optical multichannel coupler
