FAT-FIBER ADAPTER FOR PUMP USE

摘要

As kilowatt class fiber laser and amplifier systems become more in demand, there are ongoing efforts to improve optical fiber laser and amplifier designs to maximize efficiency and further increase the capacity of these high-energy optical fiber lasers and amplifiers. The present disclosure provides a fiber laser or amplifier system configured to efficiently and conveniently generate and couple high numerical aperture and high-energy pump light into a fiber laser or amplifier system.

主权项

1. A system, comprising:
(a) a fused fiber bundle, comprising:
(a1) an unfused end comprising silica-based pump light optical fibers, each silica-based pump light optical fiber having a first numerical aperture (NA), the first NA being up to approximately 0.48, each silica-based pump light optical fiber being coated with a low-index polymer coating;(a2) a fused end having a second NA, the second NA being substantially identical to the first NA, the fused end being coated with the low-index polymer coating; (b) a fat-fiber spliced to the fused fiber bundle, the fat-fiber having a third NA, the third NA being substantially identical to the second NA.