20 February 2018 Long-period fiber grating fabricated by 800 nm femtosecond laser pulses
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Abstract
In this paper, the long period fiber gratings (LPFGs) in standard SMF-28 telecommunication fibers without hydrogen loading were inscribed by using point-to-point direct writing method of femtosecond laser pulses with pulse duration of 100 fs, repetition rate of 1kHz and a central wavelength of 800 nm. The LPFGs with different spectral characteristics were fabricated by adjusting grating period, grating length and duty ratio. The results show that the resonant peak wavelengths shift to the long-wave direction with the increase of the grating length increasing. The variations of duty ratio will lead to the generation of resonance rejection band of LPFGs from singlepeak to multi-peak plus lesser out-of-band loss.
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Yani Zhang, Yani Zhang, Yaru Xi, Yaru Xi, Sicong Liu, Sicong Liu, Peng Jiang, Peng Jiang, Ya Zhao, Ya Zhao, Qiang Xu, Qiang Xu, } "Long-period fiber grating fabricated by 800 nm femtosecond laser pulses", Proc. SPIE 10697, Fourth Seminar on Novel Optoelectronic Detection Technology and Application, 106974Q (20 February 2018); doi: 10.1117/12.2312004; https://doi.org/10.1117/12.2312004
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