CO2-laser induced long-period fiber gratings in nano-engineered bend insensitive single-mode fiber

Yunjiang Rao; Wenhua Wang; Zinan Wang; Kin Seng Chiang; Yuan Gong

doi:10.1117/12.915965

30 January 2012 CO₂-laser induced long-period fiber gratings in nano-engineered bend insensitive single-mode fiber

Yunjiang Rao, Wenhua Wang, Zinan Wang, Kin Seng Chiang, Yuan Gong

Proceedings Volume 8351, Third Asia Pacific Optical Sensors Conference; 83511H (2012) https://doi.org/10.1117/12.915965
Event: Asia Pacific Optical Sensors Conference, 2012, Sydney, Australia

Abstract

Long-period fiber gratings (LPFGs) written in nano-engineered bend insensitive single-mode fiber (NEBI-SMF) were reported. It is found that, only when the pitches of the gratings are in two wavelength ranges (270-305 μm and 420-480 μm), obvious resonance peaks can be obtained within the band of 1200-1650 nm, due to the cladding mode separation caused by the nano-engineered ring in the fiber cladding. The strain sensitivity of the LPFG with a pitch of 295 μm in the range of 270-305 μm is 2.8 pm/με, while the LPFG with a pitch of 470 μm in the range of 420-480 μm is insensitive to strain. The temperature sensitivities of the two LPFGs are 0.145 nm/^oC and 0.098 nm/^oC, respectively. Due to the special structure of the NEBI-SMF, more interesting phenomenon could be explored by carrying out further theoretical and experimental study of these novel LPFGs, such as the bending and twisting characteristics, etc.

Citation Download Citation

Yunjiang Rao, Wenhua Wang, Zinan Wang, Kin Seng Chiang, and Yuan Gong "CO₂-laser induced long-period fiber gratings in nano-engineered bend insensitive single-mode fiber", Proc. SPIE 8351, Third Asia Pacific Optical Sensors Conference, 83511H (30 January 2012); https://doi.org/10.1117/12.915965

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