The Study of Effects of Hydrogen Loading Time to the Fluctuation of FBG Wavelength

Main Article Content

Phimolphan Rutthongjan
Phaisarn Sudwilai
Ong-arj Tangmettajittakul
Phattamon Samanworakit


This paper studies effects of hydrogen loading time for four conditions, which control hydrogen loading pressure at 13 MPa to the fluctuation of FBG wavelength at final optical inspection process. Hydrogen loading technique is a major technique to enhance photosensitivity and refractive index of optic fiber. FBG reflective target at 9% of writing process leads to a small refractive index change and a small distribution of UV exposure time affect to the high stability of FBG wavelength. Therefore, the fluctuation of FBG wavelength at final optical inspection process was the a similar manner for four hydrogen loading times conditions.


Download data is not yet available.

Article Details

Research Article


Kenneth O. Hill and Gerald Meltz, “Fiber Bragg Grating Technology Fundamentals, Overview Joural of lightwave technology, Vol. 20, No.11, November 2002

Raman Kashyap, “Fiber Bragg Grating”, Elsevier press, P.15-45, 2010.

L. B. Fu, G. Tan, W. J. Xu, H. L. An, X. M. Cui, X. Z. Lin, and H. D. Liu, “Ultraviolet-initiated reactions of H2 with germonosilicate fibers and H2 concentration dependence of the Bragg wavelength of a fiber grating”, Vol. 25, No. 8, Optical Society of America, 2000.

Yuji Masuda, Mitsuo Nakamura, Chisa Komatsu, Keio Fujita, Makoto Yamauchi, Masanori Kimura, Yasuo Mizutani, Susumu Kimura, Yoshifumi Suzaki, Takashi Yokouchi, Kiyoshi Nakagawa,and Seiki Ejima, “Wavelength Evolution of Fiber Bragg Gratings”, Journal of lighwave technology, Vol. 22, No. 3, March 2004.

Kazuhiro Noguchi, Nori Shibata, Naoshi Uessugi, Yukiyasu Negishi “Loss Increase for Optical Fibers Exposed to Hydrogen Atmosphere”, Journal of Lightwave technology, No. 2, April 1985

Paul J. Lemaire “Reliability of optical fibers exposed to hydrogen : prediction of long-tern loss increase”, Optical Engineering, Vol. 30 No. 6, p. 780-789, June 1991.