期刊
OPTICS COMMUNICATIONS
卷 230, 期 4-6, 页码 301-307出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optcom.2003.11.027
关键词
Bragg gratings; channel waveguides; chalcogenide glasses; photosensitivity
类别
Real-time study of the formation of Bragg gratings in monolayer As2S3 ridge waveguides is presented. A transverse holographic method is used to record such gratings. The periodic photodarkening of the layer leads to the formation of a Bragg grating with resonant wavelength similar to1.55 mum. The experiment allowed to control in situ the grating parameters such as the reflectivity, the resonant wavelength (between 1500 and 1630 nm) and the bandpass at -3 dB. (C) 2003 Elsevier B.V. All rights reserved.
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