High temperature multiparameter sensor

23 February 2011 High temperature multiparameter sensor

R. B. Walker, D. Grobnic, S. J. Mihailov, P. Lu

Proceedings Volume 7934, Optical Components and Materials VIII; 79340D (2011) https://doi.org/10.1117/12.875241
Event: SPIE OPTO, 2011, San Francisco, California, United States

Abstract

Spectral characteristics of fiber Bragg gratings are affected by both strain and temperature. While this makes gratings useful for sensing, care must be taken to ensure adequate discrimination between spectral shifts associated with strain and those due to changes in temperature. Recently, monitoring of cladding modes has been utilized for this purpose. In this paper, such measurement capabilities are evaluated at high temperature by exploiting the characteristics of Type II femtosecond infrared written gratings, achieving similar responsivity with significantly improved thermal durability.

Citation Download Citation

R. B. Walker, D. Grobnic, S. J. Mihailov, and P. Lu "High temperature multiparameter sensor", Proc. SPIE 7934, Optical Components and Materials VIII, 79340D (23 February 2011); https://doi.org/10.1117/12.875241

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