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Title: Highly sensitive type IA fiber Bragg gratings as sensors in radiation environments
Authors: Kalli, Kyriacos 
Faustov, A. V.
Saffari, Pouneh
Gusarov, Andreï I.
Wuilpart, Marc
Megret, Patrice
Zhang, Lin 
Koutsides, Charalambos 
Keywords: Bragg peaks;Fiber gratings;Gamma irradiation;Performance characteristics;Photosensitive fibers;Radiation environments;Radiation exposure;Wavelength shift;Dosimetry;Fibers;Ionizing radiation;Fiber bragg gratings
Category: Electrical Engineering, Electronic Engineering, Information Engineering
Field: Engineering and Technology
Issue Date: 2012
Publisher: SPIE
Source: 22nd International Conference on Optical Fiber Sensors, 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.
ISSN: 0277786X
DOI: 10.1117/12.975186
Rights: © 2012 SPIE
Type: Conference Papers
Appears in Collections:Δημοσιεύσεις σε συνέδρια/Conference papers

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