Highly sensitive type IA fiber Bragg gratings as sensors in radiation environments

A. Faustov; P. Saffari; C. Koutsides; A. Gusarov; M. Wuilpart; P. Mégret; L. Zhang; K. Kalli

doi:10.1117/12.975186

17 October 2012 Highly sensitive type IA fiber Bragg gratings as sensors in radiation environments

A. Faustov, P. Saffari, C. Koutsides, A. Gusarov, M. Wuilpart, P. Mégret, L. Zhang, K. Kalli

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 842153 (2012) https://doi.org/10.1117/12.975186
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

Type IA fiber gratings have unusual physical properties compared with other grating types. We compare with performance characteristics of Type IA and Type I Bragg gratings exposed to the effects of Co⁶⁰ gamma-irradiation. A Bragg peak shift of 190 pm was observed for Type IA gratings written in Fibercore PS-1250/1500 photosensitive fiber at a radiation dose of 116 kGy. This is the largest wavelength shift recorded to date under radiation exposure. The Type IA and Type I gratings show different kinetics under radiation and during post-radiation annealing; this can be exploited for the design of a grating based dosimetry system.

Citation Download Citation

A. Faustov, P. Saffari, C. Koutsides, A. Gusarov, M. Wuilpart, P. Mégret, L. Zhang, and K. Kalli "Highly sensitive type IA fiber Bragg gratings as sensors in radiation environments", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 842153 (17 October 2012); https://doi.org/10.1117/12.975186

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