Reflective Side-Polished Optical Fiber Submersion Sensor Using an Optical Fiber Mirror for Remote Sensing

A reflection-type side-polished optical fiber submersion sensor (RSS) with an optical fiber mirror for remote sensing is proposed. When compared with a conventional transmission-type side-polished optical fiber submersion sensor (TSS), the RSS with an optical fiber mirror provides an improved response, and allows efficient remote submersion sensing. In experiments, the RSS with an optical fiber mirror detected submersion with 1 dB increased throughput power gain when compared with a conventional TSS, and provided efficient remote sensing at a distance of 1 km based on the resonance wavelength shift and transmission power gain