Temperature dependence of microhole-based fiber Fabry–Perot interferometric sensors fabricated by excimer laser

Abstract. A miniature in-fiber Fabry–Perot interferometric (FPI) sensor is demonstrated. Through manufacturing microhole in a single-mode fiber with excimer laser, a single microhole FPI sensor and a dual microhole FPI sensor are fabricated, and the temperature sensing characteristics of them are investigated experimentally. The results show that the spectra of two sensors shift to short wavelength with an increase in the temperature, and the relationships between wavelength shift and temperature change have better linearity in temperature range of 30°C to 85°C. The temperature sensitivity of single microhole FPI sensor is 0.160  nm  /    °  C, and the dual microholes FPI sensor has two temperature sensitivities corresponding to different FP cavities. Furthermore, the temperature sensitivity can be adjusted by changing the distance between two microholes. When increasing the distance from 1 to 2 mm, the higher temperature sensitivity can be changed from 0.176 to 0.192  nm  /    °  C, and the temperature-dependent wavelength shift still keeps a good linearity. Compared with conventional fiber Bragg grating temperature sensor, this kind of FPI sensor has not only different dual temperature sensitivities but also higher sensitivity and stability, so that this kind of microhole FPI sensor can be used in many fields.

[1]  Sumei Wang,et al.  Femtosecond laser fabricated all-optical fiber sensors with ultrahigh refractive index sensitivity: modeling and experiment. , 2011, Optics express.

[2]  Songnian Fu,et al.  Cascaded fiber-optic Fabry-Perot interferometers with Vernier effect for highly sensitive measurement of axial strain and magnetic field. , 2014, Optics express.

[3]  Feng Gao,et al.  Temperature Compensation of Fabry-Perot Optic Fiber Strain Sensors , 2011 .

[4]  Jin Tao,et al.  Research Progress on F-P Interference—Based Fiber-Optic Sensors , 2016, Sensors.

[5]  Ruohui Wang,et al.  Fringe visibility enhanced Fabry-Perot interferometer and its application as gas refractometer , 2016 .

[6]  C. Liao,et al.  Optical fiber Fabry-Perot interferometer cavity fabricated by femtosecond laser micromachining and fusion splicing for refractive index sensing. , 2012, Optics express.

[7]  Kun Liu,et al.  Differential-pressure-based fiber-optic temperature sensor using Fabry-Perot interferometry. , 2015, Optics letters.

[8]  Yu Wu,et al.  High-finesse displacement sensor and a theoretical accelerometer model based on a fiber Fabry-Perot interferometer , 2009 .

[9]  Chang Wang,et al.  Research on Optical Fiber Grating Sensor Based on Fabry-Perot Cavity Applied in Oilfield , 2013 .

[10]  Amardeep Kaur,et al.  High-temperature fiber-optic Fabry-Perot interferometric pressure sensor fabricated by femtosecond laser. , 2013, Optics letters.

[11]  Jens Kobelke,et al.  Fabry-Perot cavity based on a diaphragm-free hollow-core silica tube. , 2011, Optics letters.

[12]  Ruohui Wang,et al.  Gas refractometer based on a side-open fiber optic Fabry–Perot interferometer , 2017 .

[13]  Ruohui Wang,et al.  Hybrid optical fiber Fabry-Perot interferometer for simultaneous measurement of gas refractive index and temperature. , 2014, Applied optics.

[14]  Tao Wei,et al.  Temperature-insensitive miniaturized fiber inline Fabry-Perot interferometer for highly sensitive refractive index measurement. , 2008, Optics express.

[15]  Denis Donlagic,et al.  High resolution, all-fiber, micro-machined sensor for simultaneous measurement of refractive index and temperature. , 2014, Optics express.

[16]  L. Nguyen,et al.  Three-Wave Fiber Fabry–Pérot Interferometer for Simultaneous Measurement of Temperature and Water Salinity of Seawater , 2011, IEEE Photonics Technology Letters.

[17]  Tao Zhu,et al.  In-line fiber Fabry-Perot refractive-index tip sensor based on endlessly photonic crystal fiber , 2008 .

[18]  Ying Wang,et al.  Temperature-insensitive refractive index sensing by use of micro Fabry-Pérot cavity based on simplified hollow-core photonic crystal fiber. , 2013, Optics letters.

[19]  Denis Donlagic,et al.  Miniature all-fiber Fabry-Perot sensor for simultaneous measurement of pressure and temperature. , 2012, Applied optics.

[20]  Shiliang Qu,et al.  Optical fiber Fabry-Perot interferometer cavity fabricated by femtosecond laser-induced water breakdown for refractive index sensing. , 2014, Applied optics.

[21]  Jianyong Chen,et al.  Stabilization of a fiber fabry‐perot interferometric acoustic wave sensor , 2012 .

[22]  Tao Zhu,et al.  Refractive index measurement using photonic crystal fiber-based Fabry-Perot interferometer. , 2010, Applied optics.

[23]  Y. Liu,et al.  Fiber Fabry–Pérot Interferometer for Measurement of Gas Pressure and Temperature , 2016, Journal of Lightwave Technology.

[24]  Jing Zhao,et al.  High-Sensitivity Gas Pressure Sensor Based on Fabry–Pérot Interferometer With a Side-Opened Channel in Hollow-Core Photonic Bandgap Fiber , 2015, IEEE Photonics Journal.

[25]  Mingran Quan,et al.  Ultra-high sensitivity Fabry-Perot interferometer gas refractive index fiber sensor based on photonic crystal fiber and Vernier effect. , 2015, Optics letters.