Development of micro-tapered long-period fiber gratings written in tapered fibers with different diameters for enhancement of strain sensitivity

Min-Seok Yoon; Sung-Jae Kim; Hyun-Joo Kim; Young-Guen Han

doi:10.1117/12.966376

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17 October 2012 Development of micro-tapered long-period fiber gratings written in tapered fibers with different diameters for enhancement of strain sensitivity

Min-Seok Yoon, Sung-Jae Kim, Hyun-Joo Kim, Young-Guen Han

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Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 84213S (2012) https://doi.org/10.1117/12.966376
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

Micro-tapered long-period fiber gratings (MT-LPFGs) written in tapered fibers with different diameters of 125, 100, 75, and 50 μm are fabricated and their transmission characteristics with variations in strain and temperature are investigated. Since the variation of the refractive index with the applied strain change is inversely proportional to the cross section area of the MT-LPFGs, the strain sensitivity of the MT-LPFGs is further improved. The temperature sensitivity is also enhanced by reducing the diameter of the tapered fiber. The experimental results are very useful for discrimination of strain and temperature sensitivities.

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Min-Seok Yoon, Sung-Jae Kim, Hyun-Joo Kim, and Young-Guen Han "Development of micro-tapered long-period fiber gratings written in tapered fibers with different diameters for enhancement of strain sensitivity", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84213S (17 October 2012); https://doi.org/10.1117/12.966376

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