Experimental investigation of long period grating working in transition mode

Luis Melo; Geoff Burton; Stephen Warwick; Peter Wild

doi:10.1117/12.2059464

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2 June 2014 Experimental investigation of long period grating working in transition mode

Luis Melo, Geoff Burton, Stephen Warwick, Peter Wild

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Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 915750 (2014) https://doi.org/10.1117/12.2059464
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

An experimental investigation of the transition modes of long period gratings (LPG) is reported. Coating LPGs with a material of high refractive index causes a reorganization of the cladding modes, leading to a substantial increase in sensitivity to changes in the surrounding refractive index (SRI). The thickness of polystyrene coatings on optical fibers, applied by dip-coating, was measured by scanning electron microscopy. The maximum sensitivity and corresponding SRI of each coating thickness was then determined by analyzing the attenuation bands in the transmission spectrum.

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Luis Melo, Geoff Burton, Stephen Warwick, and Peter Wild "Experimental investigation of long period grating working in transition mode", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 915750 (2 June 2014); https://doi.org/10.1117/12.2059464

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