G - Physics – 02 – B
Patent
G - Physics
02
B
G02B 6/26 (2006.01) G02B 6/28 (2006.01) G02B 6/35 (2006.01) H04J 14/00 (2006.01)
Patent
CA 2321398
An optical multiplexing/demultiplexing device with variable branching ratio is disclosed. The device includes a first collimator lens assembly having a first collimator lens 14, and first and second optical fibers F1 and F2 which have distal ends thereof optically coupled to the lens, and are away from each other by a distance "d," an optical axis of the lens being positioned at a midpoint therebetween, a second collimator lens assembly having a second collimator lens 15 and a third optical fiber F3 which has a distal end thereof optically coupled to the lens, being away from an optical axis of the lens by a distance "d/2" and reflection mirror means. The reflection mirror means reflects and couples a part or all of a parallel beam of an expanded mode field area, which is emitted from the first optical fiber and formed on a reference plane, to the second optical fiber, or transmits and connects all or a part of the parallel beam to the third optical fiber.
Kirby Eades Gale Baker
Seikoh Giken Co. Ltd.
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