Miniature all-fiber devices based on CO(2) laser microstructuring of tapered fibers.
A focused carbon dioxide laser beam is used to microstructure fibers that have already been narrowed by conventional fiber tapering. We describe three new miniature devices made with this technique: a fused fiber microcoupler with an interaction length of 200 mum, a long-period grating made from a periodic chain of microtapers, and a new type of prolate whispering-gallery mode microcavity.
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Kakarantzas
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Dimmick
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Birks
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R
Le Roux
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Russell