Highly sensitive optical refractometer based on edge-written ultra-long period fiber grating formed by periodic grooves

Y. Song; Y. J. Rao; T. Zhu; C. H. Shi

doi:10.1117/12.785802

16 May 2008 Highly sensitive optical refractometer based on edge-written ultra-long period fiber grating formed by periodic grooves

Y. Song, Y. J. Rao, T. Zhu, C. H. Shi

Author Affiliations +

Proceedings Volume 7004, 19th International Conference on Optical Fibre Sensors; 70041O (2008) https://doi.org/10.1117/12.785802
Event: 19th International Conference on Optical Fibre Sensors, 2008, Perth, WA, Australia

Abstract

An ultra-long-period fiber grating with periodic grooves structure (G-ULPFG) fabricated by using an edge-writing method with high frequency CO₂ laser pulses is reported, for the first time to our knowledge. The experimental results show that the different resonant peaks of the G-ULPFG have different temperature and refractive index sensitivities, and in particular, the refractive index sensitivity is much larger than that of conventional ULPFG due to the edge-groove structure. Such a G-ULPFG could be used as a highly sensitive optical refractometer with temperature self-compensation.

Citation Download Citation

Y. Song, Y. J. Rao, T. Zhu, and C. H. Shi "Highly sensitive optical refractometer based on edge-written ultra-long period fiber grating formed by periodic grooves", Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 70041O (16 May 2008); https://doi.org/10.1117/12.785802

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