TY - GEN
T1 - Influence of the coating type on the radiation sensitivity of FBGs
AU - Goussarov, Andrei
AU - Chojetzki, C.
AU - Mckenzie, I.
AU - Berghmans, Francis
N1 - Score = 1
PY - 2008/4
Y1 - 2008/4
N2 - 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.
AB - 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.
KW - Fiber Bragg gratings
KW - optical fiber radiation effects
UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_94867
UR - http://knowledgecentre.sckcen.be/so2/bibref/5588
M3 - In-proceedings paper
SN - 978-0-8194-7201-4
T3 - SPIE Proceedings
SP - 700309
EP - 700309
BT - Optical Sensors 2008
CY - Bellingham, WA, United States
T2 - Optical Sensors 2008
Y2 - 7 April 2008 through 11 April 2008
ER -