Details

Autor(en) / Beteiligte

• Gusarov, A.I.
• Berghmans, F.
• Deparis, O.
• Fernandez, A.F.
• Defosse, Y.
• Megret, P.
• Decreton, M.
• Blondel, M.

Titel

High total dose radiation effects on temperature sensing fiber Bragg gratings

Ist Teil von

• IEEE photonics technology letters, 1999-09, Vol.11 (9), p.1159-1161

Ort / Verlag

IEEE

Erscheinungsjahr

1999

Quelle

IEEE Xplore Digital Library

Beschreibungen/Notizen

• 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.