23 April 2017 Simultaneous measurement of temperature and bend by using an eccentric core fiber Bragg grating cascaded with a Fabry-Perot cavity
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Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 1032375 (2017) https://doi.org/10.1117/12.2264894
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of
Abstract
A simultaneous temperature and bend sensor based on an eccentric core fiber Bragg grating (ECFBG) cascaded with a Fabry-Perot cavity is presented and demonstrated. The hybrid structure is composed of a piece of hollow core fiber, which is sandwiched in between a piece of multimode fiber and an ECFBG. The curvature sensitivities of the ECFBG at the two opposite most sensitive directions are 52.2 pm/m-1 and -51.7 pm/m-1 respectively, and those of the FPI are 58.6pm/m-1 and -61.4 pm/m-1, respectively. The temperature sensitivities of the two parts are very different. The temperature sensitivity of the ECFBG is 10.3 pm/°c, and that of the FPI is as low as 0.7 pm/°c.
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Yang Ouyang, Jing Kong, Yimin Xu, Ai Zhou, Libo Yuan, "Simultaneous measurement of temperature and bend by using an eccentric core fiber Bragg grating cascaded with a Fabry-Perot cavity", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 1032375 (23 April 2017); doi: 10.1117/12.2264894; https://doi.org/10.1117/12.2264894
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