High total dose radiation effects on temperature sensing fiber Bragg gratings

Fiber Bragg gratings (FBGs) written in a 10 mol.% Ge-doped core silica fiber using a phase mask were exposed to /spl gamma/-radiation. The transmission and reflection spectra were recorded during irradiation up to doses in excess of 1 MGy. There was no detectable change of the Bragg peak amplitude a...

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Bibliographic Details
Published inIEEE photonics technology letters Vol. 11; no. 9; pp. 1159 - 1161
Main Authors Gusarov, A.I., Berghmans, F., Deparis, O., Fernandez, A.F., Defosse, Y., Megret, P., Decreton, M., Blondel, M.
Format Journal Article
LanguageEnglish
Published IEEE 01.09.1999
Subjects
Bragg gratings
Fiber gratings
Optical fiber losses
Optical fiber sensors
Optical fibers
Optoelectronic and photonic sensors
Radiation effects
Silicon compounds
Temperature dependence
Temperature sensors
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Summary:Fiber Bragg gratings (FBGs) written in a 10 mol.% Ge-doped core silica fiber using a phase mask were exposed to /spl gamma/-radiation. The transmission and reflection spectra were recorded during irradiation up to doses in excess of 1 MGy. There was no detectable change of the Bragg peak amplitude and the grating temperature sensitivity. The radiation-induced shift of the Bragg wavelength saturated at a dose of 0.1 MGy at a level less than 25 pm, which could still be decreased by optimization of the grating parameters. Our results confirm that FBGs are good candidates for sensing applications in radiation environments.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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ISSN:1041-1135
1941-0174
DOI:10.1109/68.784237