Share Email Print
cover

Proceedings Paper

Influence of the coating type on the radiation sensitivity of FBGs
Author(s): A. Gussarov; C. Chojetzki; I. Mckenzie; F. Berghmans
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

The ionizing radiation response of fiber Bragg gratings (FBGs) as a function of grating fabrication parameters and fiber characteristics has been investigated in a number of studies. In the present work we analyze a particular aspect of the problem, which was not considered up to now: the influence of the fiber coating on the radiation sensitivity of FBGs. The FBGs used in our study are draw tower gratings written before applying the coating in a fiber with a photosensitive 18 mol.% GeO2-doped core. We irradiated polyimide, acrylate and ormocer coated gratings as well as mechanically stripped ormocer coated FBGs using a Co60 radiation source up to a 40 kGy dose. This total dose level corresponds to a near-Earth space radiation environment mission. We show that the coating type must be taken into account for correctly interpreting ionizing radiation effects on FBGs. Our analysis also shows that a properly designed coating can enhance or decrease the grating radiation sensitivity. Therefore, the results are of interest for both dosymetry and space communication applications of the FBGs.

Paper Details

Date Published: 25 April 2008
PDF: 7 pages
Proc. SPIE 7003, Optical Sensors 2008, 700309 (25 April 2008); doi: 10.1117/12.782483
Show Author Affiliations
A. Gussarov, SCK•CEN (Belgium)
C. Chojetzki, FBGS Technologies (Germany)
I. Mckenzie, European Space Agency, ESTEC (Netherlands)
F. Berghmans, Vrije Univ. Brussel (Belgium)


Published in SPIE Proceedings Vol. 7003:
Optical Sensors 2008
Francis Berghmans; Anna Grazia Mignani; Antonello Cutolo; Patrick P. Meyrueis; Thomas P. Pearsall, Editor(s)

© SPIE. Terms of Use
Back to Top