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Efficient single frequency fibre lasers using novel photosensitive Er/Yb optical fibres

By L. Dong, W.H. Loh, J.E. Caplen, J.D. Minelly, K. Hsu and L. Reekie

Abstract

Boron- and germanium-doped highly photosensitive cladding is used in a novel design to achieve photosensitive Er/Yb-doped fibers, permitting short, strong gratings (length ~1cm, reflectivity >99%) to be written without hydrogenation. The high absorption at 980nm in Er/Yb fibers permits efficient pump absorption over a short device length, which is ideal for achieving highly efficient single-frequency fiber lasers. Both single-frequency Bragg-grating reflector and distributed-feedback lasers with slope efficiencies of 25% with respect to launched pump power have been realized in such fiber

Topics: TK, QC
Year: 1997
OAI identifier: oai:eprints.soton.ac.uk:78027
Provided by: e-Prints Soton

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Citations

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