Transmission characteristics of long-period fiber gratings via radiation of femtosecond laser

Qiang Xu; Rui Zhang; Yaru Xi; Peng Jiang; Yani Zhang; Kang Li; Nigel Copner; Xu Chen

doi:10.1117/12.2531174

17 May 2019 Transmission characteristics of long-period fiber gratings via radiation of femtosecond laser

Qiang Xu, Rui Zhang, Yaru Xi, Peng Jiang, Yani Zhang, Kang Li, Nigel Copner, Xu Chen

Proceedings Volume 11170, 14th National Conference on Laser Technology and Optoelectronics (LTO 2019); 1117005 (2019) https://doi.org/10.1117/12.2531174
Event: Fourteenth National Conference on Laser Technology and Optoelectronics, 2019, Shanghai, China

Abstract

The effects of pulse power, filling ratio, number of period and period on the long-period fiber gratings (LPFGs) by using radiation of femtosecond laser. The results show that the strong resonance peaks of LPFGs can be induced and the resonant peaks have different degrees of offset. When the parameters of the LPFG are set to be number of grating period of 70, filling ratio of 0.5, pulse power of 2.0 mW and period of 500 μm, the first resonance peak of LPFG has a blue-shift of 147.3 nm. Furthermore, the size of first resonance peak of LPFG is -19.4 dB. These characteristics of LPFGs provide a favorable opportunity for in-depth research of late-model sensing devices.

Citation Download Citation

Qiang Xu, Rui Zhang, Yaru Xi, Peng Jiang, Yani Zhang, Kang Li, Nigel Copner, and Xu Chen "Transmission characteristics of long-period fiber gratings via radiation of femtosecond laser", Proc. SPIE 11170, 14th National Conference on Laser Technology and Optoelectronics (LTO 2019), 1117005 (17 May 2019); https://doi.org/10.1117/12.2531174

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