Abstract

We report, for the first time to our knowledge, the excellent optical performance of long-period gratings written in three standard fibers and in two nonstandard fibers, namely, S-doped and N-doped fibers, using the flexible and low-cost electric arc technique. The fundamental mechanism for their formation is proposed. The gratings thermal behavior and the effect of fiber preannealing prior to writing have been investigated. We have demonstrated a good stability of these gratings at high temperatures.

[IEEE ]

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J. Lightwave Technol. (3)

A. M. Vengsarkar, P. J. Lemaire, J. B. Judkins, V. Bhatia, T. Erdogan and J. E. Sipe, "Long-period fiber gratings as band-rejection filters", J. Lightwave Technol., vol. 14, pp. 58-65, Jan. 1996.

K. Shiraishi, Y. Aizawa and S. Kawakami, "Beam expander fiber using thermal diffusion of the dopant", J. Lightwave Technol., vol. 8, pp. 1151-1161, Aug. 1990 .

Y. Mohanna, J.-M. Saugrain, J.-C. Rousseau and P. Ledoux, "Relaxation of intrinsic stresses in optical fibers", J. Lightwave Technol., vol. 8, pp. 1799-1802, Dec. 1990.

Opt. Lett. (9)

M. Fujimaki, Y. Ohki, J. L. Brebner and S. Roorda, "Fabrication of long-period optical fiber gratings by use of ion implantation", Opt. Lett., vol. 25, pp. 88-89, 2000 .

V. Grubsky and J. Feinberg, "Long-period fiber gratings with variable coupling for real-time sensing applications", Opt. Lett., vol. 25, pp. 203-205, 2000.

Y. Kondo, K. Nouchi, T. Mitsuyu, M. Watanabe, P. G. Kazansky and K. Hirao, "Fabrication of long-period fiber gratings by focused irradiation of infrared femtosecond laser pulses", Opt. Lett., vol. 24, pp. 646-648, 1999.

G. Brambilha, V. Pruneri, L. Reekie and D. N. Payne, "Enhanced photosensitivity in germanosilicate fibers exposed to CO 2 laser radiation", Opt. Lett., vol. 24, pp. 1023-1025, 1999.

I. K. Hwang, S. H. Yun and B. Y. Kim, "Long-period fiber gratings based on periodic microbends", Opt. Lett., vol. 24, pp. 1263-1265, 1999.

B. J. Eggleton, P. S. Westbrook, E. S. Windeler, S. Spalter and T. A. Strasser, "Grating resonances in air-silica microstructured optical fibers", Opt. Lett., vol. 24, pp. 1460 -1462, 1999.

A. M. Vengsarkar, J. R. Pedrazzani, J. B. Judkins, P. J. Lemaire, N. S. Bergano and C. R. Davidson, "Long-period fiber-grating-based gain equalizers", Opt. Lett., vol. 21, pp. 336-338, 1996.

V. Bathia and A. M. Vengsarkar, "Optical fiber long-period grating sensors", Opt. Lett., vol. 21, pp. 692-694, 1996.

G. Brambilla, V. Pruneri, L. Reekie, C. Contardi, D. Milanese and M. Ferraris, "Bragg gratings in ternary SiO2 : SnO 2 : Na2 O optical glass fibers", Opt. Lett., vol. 25, pp. 1153 -1155, 2000.

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