| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical combiner capable of improving reliability and a laser device using the optical combiner.SOLUTION: An optical combiner 3 comprises multiple input optical fibers 10, an output optical fiber 20, and a bridge fiber 30 optically coupled to the multiple input optical fibers 10 and the output optical fiber 20. The bridge fiber 30 has a tapered part 30A whose outer diameter decreases toward an output end, and the outer diameter of an output end face of the bridge fiber 30 is smaller than a cladding outer diameter of an input end face of the output optical fiber 20. |
