Journal ArticleDOI
Simultaneous Measurement of Pressure and Temperature in Seawater with PDMS Sealed Microfiber Mach-Zehnder Interferometer
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TLDR
In this article, a polydimethylsiloxane (PDMS) sealed microfiber Mach-Zehnder interferometer (MZI) was used for simultaneous measurement of pressure and temperature in seawater.Abstract:
Simultaneous measurement of pressure and temperature in seawater is realized based on polydimethylsiloxane (PDMS) sealed microfiber Mach–Zehnder interferometer (MZI). Benefitting from the high thermal-optic coefficient and large elasticity of PDMS, high sensitivity and robust structure can be obtained. In theoretical modeling, significant enhanced pressure response in fiber is observed clearly, and pressure or temperature sensitivities are calculated theoretically. In experiment, PDMS sealed MZI is fabricated by a two-step sealing method. Using this MZI, sensitivity of 13.31 nm/MPa for pressure sensing and −7.41 nm/°C for temperature sensing are demonstrated, respectively, which are about one order higher than bare fiber MZIs (without PDMS sealing). To verify the accuracy of sensor, several tests under arbitrarily pressure and temperature are performed with average errors of 4.38% and 1.44%, respectively. In addition, effects of encapsulation on avoiding cross-sensitivity with salinity, PDMS thickness on pressure sensitivity, response time, repeatability, time stability, and polarization of the sensor are also evaluated by experiment. Sensors demonstrated here show advantages of low cost, simple fabrication, robust and compact structure, high-pressure resistance, high sensitivity, good repeatability, and long-term stability.read more
Citations
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Journal ArticleDOI
A High-Sensitive Fiber-Optic Fabry-Perot Sensor With Parallel Polymer-Air Cavities Based on Vernier Effect for Simultaneous Measurement of Pressure and Temperature
Rui Pan,Wenlong Yang,Linjun Li,Yuqiang Yang,Lijie Zhang,Xiaoyang Yu,Jianying Fan,Shuang Yu,Yanling Xiong +8 more
TL;DR: In this paper, a high-sensitive fiber-optic Fabry-Perot sensor with parallel polymer-air cavities based on Vernier effect was proposed and demonstrated for simultaneous measurement of pressure and temperature.
Journal ArticleDOI
Salinity Sensing Characteristics Based on Optical Microfiber Coupler Interferometer
TL;DR: In this article, a novel and compact sensor based on an optic microfiber coupler interferometer (OMCI) for seawater salinity application is reported. But the OMCI device is fabricated by connecting Faraday rotating mirrors to the two out-ports of the microfibre coupler, respectively.
Journal ArticleDOI
Simultaneous Measurement of Seawater Temperature and Pressure With Polydimethylsiloxane Packaged Optical Microfiber Coupler Combined Sagnac Loop
TL;DR: In this paper , a reflective optical fiber sensor based on polydimethylsiloxane (PDMS)-sealed optical microfiber coupler combined with a sagnac loop (OMCSL) is proposed.
Journal ArticleDOI
Highly sensitive vibration sensor based on the dispersion turning point microfiber Mach-Zehnder interferometer
Kaijun Liu,Junhao Fan,Binbin Luo,Xue Zou,Decao Wu,Xianglong Zou,Shenghui Shi,Yufeng Guo,Mingfu Zhao +8 more
TL;DR: A highly sensitive vibration sensor, which is based on the dispersion turning point (DTP) microfiber Mach-Zehnder interferometer, is introduced, which suggested the high performance of themicrofiber in axial strain and micro-vibration sensing fields.
References
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Tapered fiber Mach–Zehnder interferometer for simultaneous measurement of refractive index and temperature
TL;DR: In this paper, an approach to achieve simultaneous measurement of refractive index and temperature is proposed by using a Mach-Zehnder interferometer realized on tapered single-mode optical fiber.
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Sub-micron silica diaphragm-based fiber-tip Fabry-Perot interferometer for pressure measurement.
TL;DR: A sub-micron silica diaphragm-based fiber-tip Fabry-Perot interferometer for pressure sensing applications is demonstrated, with a high pressure sensitivity and low temperature cross-sensitivity, suitable for high sensitivity pressure sensing in harsh environments.
Journal ArticleDOI
Single mode tapered fiber-optic interferometer based refractive index sensor and its application to protein sensing.
TL;DR: The proposed fiber sensor has sensitivity of refractive index around 1500 nm/RIU and for protein concentration detection, its highest sensitivity is 2.42141 nm/%W/V.