Fiber Bragg grating–based hydraulic pressure sensor with enhanced resolution

Abstract. This paper reports a simple technique for hydraulic pressure measurement with enhanced resolution using a fiber Bragg grating (FBG) and a metal spring which acts as transducer. The sensor works by means of measuring the Bragg wavelength shift of FBG caused by the longitudinal elongation of optical fiber due to applied pressure. Experimental results show that the sensor possesses good linearity and repeatability in pressure measurement ranging over 0 to 55 bar, with a sensitivity of 57.7  pm/bar. A wavelength-intensity interrogation scheme using single-multiple-single-mode fiber structure is designed for FBG sensor, which enabled the system to be compact, lightweight, inexpensive, and high resolution.

[1]  Sai Shankar Madhuvarasu,et al.  A high sensitive FBG pressure sensor using thin metal diaphragm , 2014 .

[2]  R. P. Benedict,et al.  Fundamentals of temperature, pressure, and flow measurements , 1977 .

[3]  R. Kashyap.  Fiber Bragg Gratings , 1999 .

[4]  Dongcao Song,et al.  High-sensitivity fiber Bragg grating pressure sensor using metal bellows , 2009 .

[5]  Jinping Ou,et al.  Sensitivity characterization of cladding modes in long-period gratings photonic crystal fiber for structural health monitoring , 2015 .

[6]  Putha Kishore,et al.  Vibration sensor using 2 × 2 fiber optic coupler , 2013 .

[7]  W.T. Zhang,et al.  Ultrathin FBG Pressure Sensor With Enhanced Responsivity , 2007, IEEE Photonics Technology Letters.

[8]  Chang-Seok Kim,et al.  A Fiber Bragg Grating Sensor Interrogation System Based on a Linearly Wavelength-Swept Thermo-Optic Laser Chip , 2014, Sensors.

[9]  Gerald Farrell,et al.  Multimode‐fiber‐based edge filter for optical wavelength measurement application and its design , 2006 .

[10]  A. Mehta,et al.  Wavelength tunable fiber lens based on multimode interference , 2004, Journal of Lightwave Technology.

[11]  Francesco Prudenzano,et al.  Advances on Optical Fiber Sensors , 2013 .

[12]  Xiaoyi Dong,et al.  Fiber grating pressure sensor with enhanced sensitivity , 2005, SPIE/OSA/IEEE Asia Communications and Photonics.

[13]  Kyriacos Kalli,et al.  Fiber Bragg Gratings: Fundamentals and Applications in Telecommunications and Sensing , 2000 .

[14]  A. Othonos.  Fiber Bragg gratings , 1999 .

[15]  郑世杰.  Long-period fiber grating moisture sensor with nano-structured coatings for structural health monitoring , 2015 .

[16]  Yinian Zhu,et al.  Fiber humidity sensors with high sensitivity and selectivity based on interior nanofilm-coated photonic crystal fiber long-period gratings , 2013 .

[17]  J. O. Thompson.  HOOKE'S LAW. , 1926, Science.

[18]  Ginu Rajan,et al.  Hybrid Fiber Optic Sensor System for Measuring the Strain, Temperature, and Thermal Strain of Composite Materials , 2014, IEEE Sensors Journal.

[19]  Zude Zhou,et al.  A diaphragm-type fiber Bragg grating pressure sensor with temperature compensation , 2013 .

[20]  Gang-Ding Peng,et al.  High Sensitivity Force and Pressure Measurements Using Etched Singlemode Polymer Fiber Bragg Gratings , 2013, IEEE Sensors Journal.

[21]  Orlando Frazão,et al.  Review of fiber-optic pressure sensors for biomedical and biomechanical applications , 2013, Journal of biomedical optics.

[22]  乔学光,et al.  High sensitivity fiber Bragg grating pressure difference sensor , 2004 .

[23]  M. Sai Shankar,et al.  FBG sensor for temperature-independent high sensitive pressure measurement with aid of a Bourdon tube , 2014, Photonics Europe.

[24]  Yage Zhan,et al.  Fiber Bragg grating temperature sensor for multiplexed measurement with high resolution , 2004 .

[25]  John Canning,et al.  Low cost interrogation technique for a FBG sensor for combined transverse and longitudinal strain measurement , 2008, International Conference on Optical Fibre Sensors.

[26]  Qi Jiang,et al.  Hydraulic pressure sensor based on fiber Bragg grating , 2011 .

[27]  L. Reekie,et al.  Optical in-fibre grating high pressure sensor , 1993 .

[28]  Sai Shankar Madhuvarasu,et al.  Fiber Bragg grating-based high temperature sensor and its low cost interrogation system with enhanced resolution , 2014 .

[29]  H. Sheng,et al.  A lateral pressure sensor using a fiber Bragg grating , 2004, IEEE Photonics Technology Letters.

[30]  Srimannarayana Kamineni,et al.  Method to athermalize a long-period fiber grating for interrogation of fiber Bragg grating–based sensors , 2014 .

[31]  William C. Dunn,et al.  Introduction to Instrumentation, Sensors, And Process Control (Artech House Sensors Library) , 2005 .

[32]  Prakash S. Bisen,et al.  Introduction to Instrumentation in Life Sciences , 2017 .

[33]  Qian Wang,et al.  Investigation on Single-Mode–Multimode– Single-Mode Fiber Structure , 2008, Journal of Lightwave Technology.