Patent ID: 6330090
Filing Date: 2001-12-11
Classification: G02B

Abstract:
An optical fiber wavelength multiplexing device comprising:an array of input single-mode fibers (101 to 105) designed for carrying light beams at different wavelengths (.lambda.1, .lambda.2, . . . ,.lambda.n),an output single-mode fiber (161) designed for carrying the whole set of such light beams,a dispersing system (107) receiving light beams from the input fibers (101 to 105) in an end plane and generating superimposed light beams designed for the output fiber (161) in an output plane,an array of converging microlenses (171 to 175) being located in the input plane, whereas a microlens corresponds to each input fiber, wherein the microlens array has the same pitch as the input fiber anlay and produces diverging beams whose respective central axes are parallel and which are directed to a collimating lens (108) which produces collimated beams whose respective central axes are converging to be superposed on the rear reflector of the dispersing system.