TY - JOUR AU - Li, Xuejin AB - A high-sensitivity salinity sensor based on a free space propagation-core mode Mach–Zehnder interferometer was proposed with a well-designed exposed-core microstructured optical fiber. The real-time salinity sensing was achieved by using an exposed-core microstructured optical fiber shortened to 228 µm. The proposed sensor has a salinity measurement range from 0 ‰ to 40 ‰ and a salinity sensitivity of around  −2.29 nm/‰, corresponding to a refractive index sensitivity of  −13 103.16 nm/RIU. The measurement error caused by the temperature is only 0.02 ‰ °C−1, which can be neglected in practical applications. This kind of sensor also presents a Fabry-Perot interference phenomenon besides the Mach–Zehnder interferometer, which shows a flexible sensing structure. The proposed sensor offers an alternative method for accurate measurement of seawater salinity. TI - High-sensitivity fiber salinity sensor based on an exposed-core microstructured fiber interferometer JF - Journal of Physics D: Applied Physics DO - 10.1088/1361-6463/ab415b DA - 2019-12-04 UR - https://www.deepdyve.com/lp/iop-publishing/high-sensitivity-fiber-salinity-sensor-based-on-an-exposed-core-nqBJw0MzLs SP - 495402 VL - 52 IS - 49 DP - DeepDyve ER -