Long period gratings in highly birefringent microfibers

Wa Jin; Haifeng Xuan; Wei Jin

doi:10.1117/12.2059025

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2 June 2014 Long period gratings in highly birefringent microfibers

Wa Jin, Haifeng Xuan, Wei Jin

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Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 91577N (2014) https://doi.org/10.1117/12.2059025
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

We report the fabrication of long-period gratings (LPGs) in highly birefringent (Hi-Bi) microfibers. The LPGs were fabricated by using a femtosecond infrared laser to modify the surface or a CO2 laser to induce micro-tapers periodically along the Hi-Bi microfibers. These LPGs have pitches from tens to hundreds of micrometers and very strong polarization dependent resonances. A LPG fabricated on a Hi-Bi microfiber with a major-diameter of ~2.8 μm and an ellipticity of ~0.7 demonstrated a refractive index sensitivity of ~4623 nm/RIU in water.

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Wa Jin, Haifeng Xuan, and Wei Jin "Long period gratings in highly birefringent microfibers", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91577N (2 June 2014); https://doi.org/10.1117/12.2059025

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