Sampled Bragg gratings in chalcogenide (As2S3) rib-waveguides
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Date
Authors
Baker, Neil J
Lee, Ho W
Littler, I C M
de Sterke, C Martijn
Eggleton, Benjamin J
Madden, Steve
Luther-Davies, Barry
Choi, Duk-Yong
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Optical Society of America
Abstract
We have written a sampled Bragg grating into a highly
photosensitive chalcogenide (As2S3) rib-waveguide using a scanning Sagnac
interferometer. The grating exhibits evenly spaced rejection peaks over a 40
nm bandwidth. We estimate the induced refractive index change of the
waveguide to be over 0.03 by matching the measured spectrum to numerical
solutions of the coupled mode equations while accounting for an induced
chirp. The sampled Bragg grating presented is comparable in strength and
bandwidth to the best sampled Bragg gratings obtained to date in silica
optical fibre.
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Citation
Optics Express 14.20 (2006): 9451-9459
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Optics Express
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