Low Loss Splices to Dissimilar Optical Fibers
NAVAL RESEARCH LAB WASHINGTON DC WASHINGTON United States
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Splicing between dissimilar optical fibers can lead to unacceptable losses in sensing systems due to mode field mismatch. This is particularly true for multiplexed fiber laser arrays where high splice losses between active and passive fibers reduce the available pump light for lasers furthest from the source. Flame polishing the splice joint can reduce the loss by thermally diffusing core dopants such that the effective mode fields between the fibers are similar. This report describes a technique by which the splice loss between two dissimilar fibers was reduced on average to 0.23 dB. A discussion on the multiplexing limits of fiber lasers using 980 nm pumping will also be provided.
- Fiber Optics and Integrated Optics