Optical fiber combiner, and laser system using the same

摘要

An optical fiber combiner 1 has: a plurality of input optical fibers 20; a plurality of divergence angle reducing members 50 which lights emitted from the respective input optical fibers 20 enter and which emits the lights from the input optical fibers 20 at divergence angles made lower than divergence angles upon entrance; a bridge fiber 30 which the lights emitted from the respective divergence angle reducing members 50 enter and which has a tapered portion 34 which has a portion in which the lights propagate and a diameter of which is gradually reduced apart from a divergence angle reducing member 50 side; and an output optical fiber 40 which a light emitted from a side of the bridge fiber 30 opposite to the divergence angle reducing member 50 side enters.

主权项

1. An optical fiber combiner comprising:
a plurality of input optical fibers; a plurality of divergence angle reducing members which lights emitted from the respective input optical fibers enter and which emits the lights from the input optical fibers at divergence angles made lower than divergence angles upon entrance; a bridge fiber which the lights emitted from the respective divergence angle reducing members enter, and which comprises a tapered portion which comprises a portion in which the entrance lights propagate and a diameter of which is gradually reduced apart from a divergence angle reducing member side; and an output optical fiber which a light emitted from a side of the bridge fiber opposite to the divergence angle reducing member side enters.