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Refractive index sensor based on stress-induced long period grating

  • Special Section: The 9th International Conference on Optics-photonics Design & Fabrication “ODF’14, Itabashi, Tokyo”
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Abstract

We proposed a novel refractive index sensor based on a side-polishing fiber to be cascaded with a stress-induced long period fiber grating (LPG), which is created by applying a force to a V-grooved plate on the single mode fiber with micro-bending deformation. When the refractive index (RI) surrounding the side-polishing surface is changed, the LPG-induced cladding mode light could be coupled back to the core mode, so that it will result in the magnitude variation of LPG loss-peak. This property of index sensing based on the stress-induced LPG by monitoring the power-level change may be exploited in chemical sensing and environmental monitoring applications.

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Correspondence to Guei-Ru Lin.

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Lin, GR., Chang, HY., Fu, MY. et al. Refractive index sensor based on stress-induced long period grating. OPT REV 21, 676–678 (2014). https://doi.org/10.1007/s10043-014-0108-8

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  • DOI: https://doi.org/10.1007/s10043-014-0108-8

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