Chinese Optics Letters, Volume. 1, Issue 5, 05256(2003)
A technique for enhancing the thermal stability of hydrogen-loaded fiber Bragg grating
Heat treatment with the presence of hydrogen (H_(2)) that react with GeE0 centers (·Ge ≡) at high temperature will weaken the refractive index modulation of grating fabricated in hydrogen-loaded normal germanosilicate fiber. Pre-annealing treatment of the above fiber was demonstrated to be able to enhance the grating’s thermal stability effectively. 0.37-nm blue-shift of the reflected Bragg wavelength was observed.
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Youlong Yu, Hwayaw Tam. A technique for enhancing the thermal stability of hydrogen-loaded fiber Bragg grating[J]. Chinese Optics Letters, 2003, 1(5): 05256