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Proceedings Paper

Temperature insensitive refractometer using Bragg gratings in core and under-cladding of open-top ridge waveguide
Author(s): X. Dai; S. J. Mihailov; C. L. Callender; C. Blanchetière; R. B. Walker
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Paper Abstract

Bragg grating refractometers have been previously disclosed by other authors but sometimes suffer from temperature instability due to well know grating characteristics. In order to overcome this limitation, a temperature insensitive refractometer is developed by using a cladding mode resonance as a temperature reference, with the relative shift of the core mode resonance used to measure the refractive index of substances under test. Specifically, the device fabricated here produces a relative resonance shift of 1 pm for every 5×10-4 of measured index change, with a temperature sensitivity less than 0.5 pm/°C.

Paper Details

Date Published: 20 October 2006
PDF: 7 pages
Proc. SPIE 6371, Photonic Sensing Technologies, 637107 (20 October 2006); doi: 10.1117/12.684486
Show Author Affiliations
X. Dai, Communications Research Ctr. (Canada)
S. J. Mihailov, Communications Research Ctr. (Canada)
C. L. Callender, Communications Research Ctr. (Canada)
C. Blanchetière, Communications Research Ctr. (Canada)
R. B. Walker, Communications Research Ctr. (Canada)

Published in SPIE Proceedings Vol. 6371:
Photonic Sensing Technologies
Michael A. Marcus; Brian Culshaw; John P. Dakin, Editor(s)

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