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Journal articles on the topic 'Fabry-Perot sensor'

Author: Grafiati

Published: 4 June 2021

Last updated: 2 February 2022

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1

Padron, Ivan, Anthony T. Fiory, and Nuggehalli M. Ravindra. "Novel MEMS Fabry-Perot Interferometric Pressure Sensors." Materials Science Forum 638-642 (January 2010): 1009–14. http://dx.doi.org/10.4028/www.scientific.net/msf.638-642.1009.

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A novel design for a Fabry-Perot Interferometric Sensor (FPIS) consisting of a Fabry-Perot cavity formed between two bonded surfaces is discussed. The Fabry-Perot cavity and the optical fiber to which it is coupled are used as the sensing element and interconnect, respectively. The Fabry-Perot cavity is fabricated using the Micro Electro Mechanical Systems (MEMS) technology. The introduction of a center rigid body diaphragm gives this sensor considerable advantage when compared with previous Fabry-Perot cavity based sensors.

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2

Zhang, Xiongxing, Wei Wang, Haibin Chen, Ying Tang, Zhibo Ma, and Kening Wang. "Two-Parameter Elliptical Fitting Method for Short-Cavity Fiber Fabry–Perot Sensor Interrogation." Sensors 19, no. 1 (2018): 36. http://dx.doi.org/10.3390/s19010036.

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To solve the cavity interrogation problem of short cavity fiber Fabry–Perot sensors in white light spectral interrogation with amplified spontaneous emissions (ASEs) as the white light sources, a data processing method, using an improved elliptical fitting equation with only two undetermined coefficients, is proposed. Based on the method, the cavity length of a fiber Fabry–Perot sensor without a complete reflection spectrum period in the frequency domain can be interrogated with relatively high resolution. Extrinsic fiber Fabry–Perot air-gap sensors with cavity lengths less than 30 μm are used

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3

Ma, Cheng, Evan M. Lally, and Anbo Wang. "Toward Eliminating Signal Demodulation Jumps in Optical Fiber Intrinsic Fabry–Perot Interferometric Sensors." Journal of Lightwave Technology 29, no. 13 (2011): 1913–19. http://dx.doi.org/10.1109/jlt.2011.2144957.

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Fiber optic Fabry-Perot sensors are commonly interrogated by spectral interferometric measurement of optical path difference (OPD). Spurious jumps in sensor output, previously attributed to noise, are often observed in OPD-based measurements. Through analysis and experimentation based on intrinsic Fabry-Perot interferometric (IFPI) sensors, we show that these discontinuities are actually caused by a time-varying interferogram phase term. We identify several physical causes for varying initial phase and derive a threshold value at which it begins to cause errors in the sensor output. Finally, w

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4

Budinski, Vedran, and Denis Donlagic. "Miniature Twist/Rotation Fabry Perot Sensor Based on a Four-Core Fiber." Proceedings 2, no. 13 (2018): 1091. http://dx.doi.org/10.3390/proceedings2131091.

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This paper presents a miniature Fabry Perot twist/rotation sensor. The presented sensor consists of a single lead-in multicore fiber, which has four eccentrically positioned cores, a special asymmetrical microstructure, similar to a truncated cylinder, and an inline semi reflective mirror, all packed in a glass capillary housing. The perpendicular cut lead-in multicore fiber and the inline semi reflective mirror form four Fabry-Perot cavities. The optical path length of each Fabry-Perot interferometer is defined by the distance between mirrors, refractive index and twist/rotation angle of the

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5

Wang, Yung Cheng, Lih Horng Shyu, Wen Yuh Jywe, and Bean Yin Lee. "Compensation of Tilt Angles and Verification of Displacement Measurements with a Fabry-Perot Interferometer." Key Engineering Materials 437 (May 2010): 95–97. http://dx.doi.org/10.4028/www.scientific.net/kem.437.95.

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The construction of Fabry-Perot interferometer is very simple and it has been already utilized in different measurement systems. The result of displacement measurement is obviously influenced by the tilt angles of measurement mirror, if a Fabry-Perot interferometer is utilized for displacement measurement. Hence, the measuring range of current systems is rather small (less than 1 mm). The goal of this investigation is to develop a Fabry-Perot interferometer for large travelling range (till 60 mm) by aid of compensation of tilt angles with an angular sensor, piezo translators, control mechanism

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6

Feng, Fei, Pinggang Jia, Jiang Qian, Zhengpeng Hu, Guowen An, and Li Qin. "High-Consistency Optical Fiber Fabry–Perot Pressure Sensor Based on Silicon MEMS Technology for High Temperature Environment." Micromachines 12, no. 6 (2021): 623. http://dx.doi.org/10.3390/mi12060623.

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This paper proposes a high-temperature optical fiber Fabry–Perot pressure sensor based on the micro-electro-mechanical system (MEMS). The sensing structure of the sensor is composed of Pyrex glass wafer and silicon wafer manufactured by mass micromachining through anodic bonding process. The separated sensing head and the gold-plated fiber are welded together by a carbon dioxide laser to form a fiber-optic Fabry–Perot high temperature pressure sensor, which uses a four-layer bonding technology to improve the sealing performance of the Fabry–Perot cavity. The test system of high temperature pre

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7

Chin, Ken K., Yan Sun, Guanhua Feng, et al. "Fabry-Perot diaphragm fiber-optic sensor." Applied Optics 46, no. 31 (2007): 7614. http://dx.doi.org/10.1364/ao.46.007614.

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8

Fang, J. X., H. F. Taylor, and H. S. Choi. "Fiber-optic Fabry-Perot flow sensor." Microwave and Optical Technology Letters 18, no. 3 (1998): 209–11. http://dx.doi.org/10.1002/(sici)1098-2760(19980620)18:3<209::aid-mop14>3.0.co;2-z.

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9

Lee, C. E., A. M. Markus, E. Udd, and H. F. Taylor. "Optical-fiber Fabry–Perot embedded sensor." Optics Letters 14, no. 21 (1989): 1225. http://dx.doi.org/10.1364/ol.14.001225.

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10

Cheng, Jin, Yu Zhou, and Xiaoping Zou. "Fabry–Perot Cavity Sensing Probe with High Thermal Stability for an Acoustic Sensor by Structure Compensation." Sensors 18, no. 10 (2018): 3393. http://dx.doi.org/10.3390/s18103393.

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Fiber Fabry–Perot cavity sensing probes with high thermal stability for dynamic signal detection which are based on a new method of structure compensation by a proposed thermal expansion model, are presented here. The model reveals that the change of static cavity length with temperature only depends on the thermal expansion coefficient of the materials and the structure parameters. So, fiber Fabry–Perot cavity sensing probes with inherent temperature insensitivity can be obtained by structure compensation. To verify the method, detailed experiments were carried out. The experimental results r

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11

Quirion, Marco, and Gérard Ballivy. "Laboratory investigation on Fabry-Perot sensor and conventional extensometers for strain measurement in high performance concrete." Canadian Journal of Civil Engineering 27, no. 5 (2000): 1088–93. http://dx.doi.org/10.1139/l00-025.

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Advances in fiber optic sensing technology have made possible the installation of an extremely precise and reliable sensor in small structural members. Because of the high sensitivity and fast response of the sensor, low strain and dynamic strain can be measured. In this study, a Fabry-Perot strain sensor was cast in a high performance concrete cylinder, which had been submitted to simple compression and thermal tests. These results were compared with measurements obtained using external linear variable differential transformers fixed on concrete samples having the same composition as the fibe

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12

Dong, Hai Bing. "Error Analysis and Research Based on EFPI Sensors." Advanced Materials Research 912-914 (April 2014): 1254–58. http://dx.doi.org/10.4028/www.scientific.net/amr.912-914.1254.

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Low-coherence Extrinsic Fabry-Perot interferometric (EFPI) sensors have previously been demonstrated for varies measurements such as temperature, strain, diplacement, etc. In this paper we analysis the sensor error and give some advices to reduce the error.

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13

Budinski, Vedran, and Denis Donlagic. "A Miniature Fabry Perot Sensor for Twist/Rotation, Strain and Temperature Measurements Based on a Four-Core Fiber." Sensors 19, no. 7 (2019): 1574. http://dx.doi.org/10.3390/s19071574.

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In this article, a novel miniature Fabry-Perot twist/rotation sensor using a four core fiber and quadruple interferometer setup is presented and demonstrated. Detailed sensor modeling, analytical evaluation and test measurement assessment were conducted in this contribution. The sensor structure comprises a single lead-in multicore fiber, which has four eccentrically positioned cores, a special asymmetrical microstructure, and an inline semi-reflective mirror, all packed in a glass capillary housing. A four core fiber positioned in front of a special asymmetrical microstructure and the inline

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14

Feng Xu, Feng Xu, Lu Lu Lu Lu, Weiwei Lu Weiwei Lu, and Benli Yu Benli Yu. "In-line Fabry-Perot refractive index sensor based on microcavity." Chinese Optics Letters 11, no. 8 (2013): 082802–82805. http://dx.doi.org/10.3788/col201311.082802.

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15

Al-Ithawi, S., and A. Hadi. "Implementation of Pressure Sensor of Optical Fiber Using Optical Interferometer." Defect and Diffusion Forum 398 (January 2020): 125–30. http://dx.doi.org/10.4028/www.scientific.net/ddf.398.125.

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In present work, two types of Interferometric Fiber Optic Sensor (Fabry – Perot & Modal Sensor) have been demonstrate and investigated. The main parameter studied of this contribute is the sensitivity, the strain could be induced by make a stress on the optical fiber. The strain effect at the fiber due to variation of the intensity in the output of the optical fiber. Then, the modes of electromagnetic waves that propagate in the fiber could be analyzed to determine the sensitivity depend on fringe rates. I conclude from this study the Extrinsic Fabry – Perot Interferometry structure is mor

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16

Xia, Ping, Yuegang Tan, Caixia Yang, Zude Zhou, and Kang Yun. "A Composite Fabry-Perot Interferometric Sensor with the Dual-Cavity Structure for Simultaneous Measurement of High Temperature and Strain." Sensors 21, no. 15 (2021): 4989. http://dx.doi.org/10.3390/s21154989.

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In this paper, an optical fiber composite Fabry-Perot interferometric (CFPI) sensor capable of simultaneous measurement of high temperature and strain is presented. The CFPI sensor consists of a silica-cavity intrinsic Fabry-Perot interferometer (IFPI) cascading an air-cavity extrinsic Fabry-Perot interferometer (EFPI). The IFPI is constructed at the end of the transmission single-mode fiber (SMF) by splicing a short piece of photonic crystal fiber (PCF) to SMF and then the IFPI is inserted into a quartz capillary with a reflective surface to form a single-ended sliding EFPI. In such a configu

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17

Lauwers, Thomas, Alain Glière, and Skandar Basrour. "An all-Optical Photoacoustic Sensor for the Detection of Trace Gas." Sensors 20, no. 14 (2020): 3967. http://dx.doi.org/10.3390/s20143967.

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A highly sensitive Fabry–Perot based transduction method is proposed as an all-optical alternative for the detection of trace gas by the photoacoustic spectroscopy technique. A lumped element model is firstly devised to help design the whole system and is successfully compared to finite element method simulations. The fabricated Fabry–Perot microphone consists in a hinged cantilever based diaphragm, processed by laser cutting, and directly assembled at the tip of an optical fiber. We find a high acoustic sensitivity of 630 mV/Pa and a state-of-the-art noise equivalent pressure, as low as ~ 2 μ

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18

Gomes, André D., Martin Becker, Jan Dellith, et al. "Multimode Fabry–Perot Interferometer Probe Based on Vernier Effect for Enhanced Temperature Sensing." Sensors 19, no. 3 (2019): 453. http://dx.doi.org/10.3390/s19030453.

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New miniaturized sensors for biological and medical applications must be adapted to the measuring environments and they should provide a high measurement resolution to sense small changes. The Vernier effect is an effective way of magnifying the sensitivity of a device, allowing for higher resolution sensing. We applied this concept to the development of a small-size optical fiber Fabry–Perot interferometer probe that presents more than 60-fold higher sensitivity to temperature than the normal Fabry–Perot interferometer without the Vernier effect. This enables the sensor to reach higher temper

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19

Habib, Khaled. "Novel Electrochemical-Emission Spectroscopy of Metals by White Light Interferometry." Materials Science Forum 1026 (April 2021): 189–96. http://dx.doi.org/10.4028/www.scientific.net/msf.1026.189.

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A white light, i.e., Fabry-Perot, interferometry was unprecedently applied to determine the rate change of the current density (J) of aluminum samples during the anodization processes of the samples in aqueous solutions. The current density(J) values were obtained by Fabry-Perot interferometry rather than the direct current (DC) or alternating current (AC), methods. Therefore, the abrupt rate change of the J was called electrochemical-emission spectroscopy. The anodization of the aluminum samples was conducted by an external DC source in 0.0,2,4,6,8,10% sulfuric acid (H2SO4) solutions at room

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20

Joung, Juyoung, Kyung-Chan Kim, Koonchan Kim, and Jaehee Park. "Miniature Fiber Optic Fabry-Perot Pressure Sensor." Journal of the Korean Physical Society 51, no. 1 (2007): 249. http://dx.doi.org/10.3938/jkps.51.249.

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21

Zhu Jiali, 朱佳利, 王鸣 Wang Ming, 蔡东艳 Cai Dongyan, and 贾晟 Jia Sheng. "A Fiber Fabry-Perot Micro Pressure Sensor." Acta Optica Sinica 34, no. 4 (2014): 0428002. http://dx.doi.org/10.3788/aos201434.0428002.

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22

Hill, G. C., R. Melamud, F. E. Declercq, et al. "SU-8 MEMS Fabry-Perot pressure sensor." Sensors and Actuators A: Physical 138, no. 1 (2007): 52–62. http://dx.doi.org/10.1016/j.sna.2007.04.047.

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23

Lin, Chun, Yuan Qing Huang, Wang Lei, and Xiao Juan Ye. "A Novel Fabry-Perot Cavity Fiber Sensor." Physics Procedia 33 (2012): 1939–46. http://dx.doi.org/10.1016/j.phpro.2012.05.306.

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24

Alcoz, J. J., C. E. Lee, and H. F. Taylor. "Embedded fiber-optic Fabry-Perot ultrasound sensor." IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control 37, no. 4 (1990): 302–6. http://dx.doi.org/10.1109/58.56491.

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25

Isaev, V. G., N. G. Seregin, and N. N. Grechanaya. "Measurement of deformations of structural elements technical systems of aircraft by fiber optic devices." Informacionno-technologicheskij vestnik, no. 2 (July 30, 2018): 14–24. http://dx.doi.org/10.21499/2409-1650-2018-2-14-24.

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The article deals with the measurement of deformations of structural elements of technical systems. The analysis of damages and deformations arising in the elements of aircraft structures during operation is carried out. The conducted researches of the fiber-optical sensor (VOD) based on the Fabry-Perot interferometer confirmed its accuracy and reliability of operation, since the interferometer base is significantly less than the length of the fastening element. The influence of the change in ambient temperature on the change in the base is negligible. Thus, the application of the method of fi

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26

Pechprasarn, Suejit, Suvicha Sasivimolkul, and Phitsini Suvarnaphaet. "Fabry–Perot Resonance in 2D Dielectric Grating for Figure of Merit Enhancement in Refractive Index Sensing." Sensors 21, no. 15 (2021): 4958. http://dx.doi.org/10.3390/s21154958.

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We have recently reported in our previous work that one-dimensional dielectric grating can provide an open structure for Fabry–Perot mode excitation. The grating gaps allow the sample refractive index to fill up the grating spaces enabling the sample to perturb the Fabry–Perot mode resonant condition. Thus, the grating structure can be utilized as a refractive index sensor and provides convenient sample access from the open end of the grating with an enhanced figure of merit compared to the other thin-film technologies. Here, we demonstrate that 2D grating structures, such as rectangular pilla

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27

Cheymol, G., A. Verneuil, P. Grange, H. Maskrot, and C. Destouches. "Report of High Temperature Measurements with a Fabry-Perot Extensometer." EPJ Web of Conferences 225 (2020): 01011. http://dx.doi.org/10.1051/epjconf/202022501011.

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Fabry-Perot (FP) sensors like other Fiber Optic (FO) sensors may be of particular interest for in pile experiments in MTR with little room available thanks to their compact size. Light weight also reduces gamma heating hence limiting the thermal effect. Different physical parameters such as temperature, strain, displacement, vibration, pressure, or refractive index may be sensed through the measurement of the optical path length difference in the cavity. We have developed a Fabry-Perot extensometer able to operate at high temperature (up to 400°C), under a high level of radiation (neutron and

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28

Wang, Rongkun, Xuejian Xie, Xiangang Xu, Xiufang Chen, and Longfei Xiao. "Comparison of Measurements with Finite-Element Analysis of Silicon-Diaphragm-Based Fiber-Optic Fabry–Perot Temperature Sensors." Sensors 19, no. 21 (2019): 4780. http://dx.doi.org/10.3390/s19214780.

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Silicon-diaphragm-based fiber-optic Fabry–Perot sensors with different intracavity pressures were fabricated by anodic bonding and microelectromechanical techniques. The thermal stress and thermal expansion of the Fabry–Perot (FP) sensor caused by high-temperature bonding and temperature change were simulated by finite-element analysis. The calculated thermal stress is largest in the center and edge regions of the resonance cavity, reaching from 2 to 6 MPa. The reflection spectra and temperature sensitivity of the sensors were simulated by using a two-dimensional wave-optic model in Comsol. Th

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29

Shie, N. C., T. L. Chen, and Kai Yuan Cheng. "Use of Fiber Interferometer for AFM Cantilever Probe Displacement Control." Key Engineering Materials 295-296 (October 2005): 77–82. http://dx.doi.org/10.4028/www.scientific.net/kem.295-296.77.

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This investigation presents a fibre-optic Fabry-Perot interferometer as a displacement sensor in an atomic force microsope (AFM). A simple model of light wave transmission between two fibres with the same core diameter is proposed to determine the theoretical equation of light intensity of interference fringes from the fibre-optic Fabry-Perot interferometer. By replacing an AFM cantilever with a movable reflective mirror, the variations of relative light intensity of the interference fringes with the spacing between the fibre and the mirror were recorded. The theoretical equation for the light

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30

BEAULIEU, Y., S. JANZ, H. DAI, et al. "SURFACE EMITTED HARMONIC GENERATION FOR SENSOR AND DISPLAY APPLICATIONS." Journal of Nonlinear Optical Physics & Materials 04, no. 04 (1995): 893–927. http://dx.doi.org/10.1142/s0218863595000410.

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We review briefly some of the basic principles involved in quasi-phase matched multilayer semiconductor films for second-harmonic generation in waveguided, reflection and intra-cavity geometries. New applications in optical ranging for length, temperature, deformation sensors, real time optical reflectometry and vertical cavity second-harmonic generation for displays are presented. The enhancement of quasi-phase matched second-harmonic generation in vertical cavity Fabry-Perot structures is also investigated. When the optimal quasi-phase matching conditions are satisfied in the Fabry-Perot cor

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31

Pettinato, Sara, Daniele Barettin, Vadim Sedov, Victor Ralchenko, and Stefano Salvatori. "Fabry-Perot Pressure Sensors Based on Polycrystalline Diamond Membranes." Materials 14, no. 7 (2021): 1780. http://dx.doi.org/10.3390/ma14071780.

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Pressure sensors based on diamond membranes were designed and tested for gas pressure measurement up to 6.8 MPa. The diamond film (2” diameter, 6 μm thickness)—grown by microwave plasma chemical vapor deposition on a silicon substrate—was a starting material to produce an array of membranes with different diameters in the 130–400 μm range, in order to optimize the sensor performance. Each 5 mm × 5 mm sensing element was obtained by subsequent silicon slicing. The fixed film thickness, full-scale pressure range, and sensor sensitivity were established by a proper design of the diameter of diamo

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32

Li, Haoyong, Delin Li, Chaoyu Xiong, et al. "Low-Cost, High-Performance Fiber Optic Fabry–Perot Sensor for Ultrasonic Wave Detection." Sensors 19, no. 2 (2019): 406. http://dx.doi.org/10.3390/s19020406.

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This study describes a novel fiber optic extrinsic Fabry–Perot interferometric (EFPI) ultrasonic sensor comprising a low-cost and high-performance silicon diaphragm. A vibrating diaphragm, 5 μm thick, was fabricated by using the Microelectromechanical Systems (MEMS) processing technology on a silicon-on-insulator (SOI) wafer. The Fabry–Perot (FP) cavity length was solely determined during the manufacturing process of the diaphragm by defining a specific stepped hole on the handling layer of the SOI wafer, which made the assembly of the sensor easier. In addition, the use of cheap and commercia

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33

Kim, Ju Ha, Eun Joo Jung, Myoung Jin Kim, et al. "Temperature Sensor Based on Fabry-Perot Interferometer Using a Fiber Optic Patch Cord." Journal of Sensor Science and Technology 23, no. 2 (2014): 110–13. http://dx.doi.org/10.5369/jsst.2014.23.2.110.

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34

Huang, Zhengyu. "Wavefront splitting intrinsic Fabry-Perot fiber optic sensor." Optical Engineering 44, no. 7 (2005): 070501. http://dx.doi.org/10.1117/1.1978847.

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35

Lu, Guowei, Bolin Cheng, Hong Shen, et al. "Fabry-Perot type sensor with surface plasmon resonance." Applied Physics Letters 89, no. 22 (2006): 223904. http://dx.doi.org/10.1063/1.2398885.

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36

Song, Boyi, Jianyang Hu, Chunli Xia, et al. "Liquid-crystal based Fabry–Perot interferometer displacement sensor." Applied Optics 58, no. 2 (2019): 410. http://dx.doi.org/10.1364/ao.58.000410.

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37

Chen, L. H., T. Li, C. C. Chan, et al. "Chitosan based fiber-optic Fabry–Perot humidity sensor." Sensors and Actuators B: Chemical 169 (July 2012): 167–72. http://dx.doi.org/10.1016/j.snb.2012.04.052.

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38

Fan-Gang Tseng and Chun-Jun Lin. "Polymer mems-based fabry-perot shear stress sensor." IEEE Sensors Journal 3, no. 6 (2003): 812–17. http://dx.doi.org/10.1109/jsen.2003.820364.

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Yi, Jihaeng. "Sapphire Fabry–Perot Pressure Sensor at High Temperature." IEEE Sensors Journal 21, no. 2 (2021): 1596–602. http://dx.doi.org/10.1109/jsen.2020.3021187.

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40

Yang, Fan, Yanzhen Tan, Wei Jin, Yuechuan Lin, Yun Qi, and Hoi Lut Ho. "Hollow-core fiber Fabry–Perot photothermal gas sensor." Optics Letters 41, no. 13 (2016): 3025. http://dx.doi.org/10.1364/ol.41.003025.

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Liu, Xuanbin, Zhuangqi Cao, Qishun Shen, and Shu Huang. "Optical sensor based on Fabry-Perot resonance modes." Applied Optics 42, no. 36 (2003): 7137. http://dx.doi.org/10.1364/ao.42.007137.

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42

Gerges, A. S., T. P. Newson, F. Farahi, J. D. C. Jones, and D. A. Jackson. "A hemispherical air cavity fibre Fabry-Perot sensor." Optics Communications 68, no. 3 (1988): 157–60. http://dx.doi.org/10.1016/0030-4018(88)90175-7.

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43

Broadway, Christian, Frédéric Descamps, Damien Kinet, Christophe Caucheteur, and Patrice Mégret. "Intrinsic Fabry-Perot Sensors for Magnetic Field Detection." EPJ Web of Conferences 170 (2018): 02001. http://dx.doi.org/10.1051/epjconf/201817002001.

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Within the context of ensuring stable nuclear fusion, it is important to monitor and control a number of parametersincluding the magnetic field associated with plasma circulation. Optical fibre sensing techniques have seen a surge in promulgation and research advances in recent years, due to their immunity to electromagnetic radiation and compact dimensions. Prior work has shown that fibre Bragg gratings are one method of recovering the induced magnetic field, with the main point of interest being their use as distributed point sensors. However, Bragg grating inscription leads to the creation

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44

Sukkasem, Chayanisa, Suvicha Sasivimolkul, Phitsini Suvarnaphaet, and Suejit Pechprasarn. "Analysis of Embedded Optical Interferometry in Transparent Elastic Grating for Optical Detection of Ultrasonic Waves." Sensors 21, no. 8 (2021): 2787. http://dx.doi.org/10.3390/s21082787.

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In this paper, we propose a theoretical framework to explain how the transparent elastic grating structure can be employed to enhance the mechanical and optical properties for ultrasonic detection. Incident ultrasonic waves can compress the flexible material, where the change in thickness of the elastic film can be measured through an optical interferometer. Herein, the polydimethylsiloxane (PDMS) was employed in the design of a thin film grating pattern. The PDMS grating with the grating period shorter than the ultrasound wavelength allowed the ultrasound to be coupled into surface acoustic w

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Lin, Qijing, Zirong Wu, Na Zhao, et al. "Design and numerical analysis of high-reflective film used in F-P sapphire optical fiber high-temperature sensor." Sensor Review 39, no. 2 (2019): 162–70. http://dx.doi.org/10.1108/sr-01-2018-0015.

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PurposeThe Fabry-Perot sapphire optical fiber sensor is an excellent choice for high-temperature sensing in civil and military fields, such as oil exploitation, engine and turbine. The purpose of this paper is to study the high-reflective film system withstanding high temperature in Fabry-Perot sapphire optical fiber high-temperature sensor. To improve the performance of the sensor and reduce the difficulty of signal acquisition, one of the key ways is to enhance the normalized light intensity of F-P sensor, which can be achieved by coating the high-reflective film system on the fiber end.Desi

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Wang, Wenhua, Weina Wu, Zhengye Xiong, et al. "Demodulation algorithm for optical fiber fabry-perot interference sensor." MATEC Web of Conferences 336 (2021): 04010. http://dx.doi.org/10.1051/matecconf/202133604010.

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In view of resolution of optical fiber Fabry-Perot (FP) interference sensor, this paper analyses and researches high resolution demodulation algorithms including fast Fourier transform demodulation algorithm, cross-correlation calculation demodulation algorithm, vernier demodulation algorithm. Through continuous improvement, the vernier demodulation algorithm has achieved a resolution of 0.084nm. And it has a resolution of 2.3Pa when the vernier demodulation algorithm was applied to osmotic pressure measurement.

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Xu, Cheng, and Zahra Sharif Khodaei. "A Novel Fabry-Pérot Optical Sensor for Guided Wave Signal Acquisition." Sensors 20, no. 6 (2020): 1728. http://dx.doi.org/10.3390/s20061728.

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In this paper, a novel hybrid damage detection system is proposed, which utilizes piezoelectric actuators for guided wave excitation and a new fibre optic (FO) sensor based on Fabry-Perot (FP) and Fiber Bragg Grating (FBG). By replacing the FBG sensors with FBG-based FP sensors in the hybrid damage detection system, a higher strain resolution is achieved, which results in higher damage sensitivity and higher reliability in diagnosis. To develop the novel sensor, optimum parameters such as reflectivity, a wavelength spectrum, and a sensor length were chosen carefully through an analytical model

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Wang, Qiao Yun, and Zhen He Ma. "Polymer Diaphragm Based Fiber Optic Fabry-Perot Acoustic Sensor." Applied Mechanics and Materials 401-403 (September 2013): 1087–90. http://dx.doi.org/10.4028/www.scientific.net/amm.401-403.1087.

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This paper presents a polymer diaphragm based Fabry-Perot (F-P) sensor system for aeroacoustic measurement in air. The diaphragm of a novel polymer material poly phthalazinone ether sulfone ketone (PPESK) is used as the sensing element. The effective dimension of the diaphragm is 1.0mm in diameter and 6μm in thickness. Thanks to the good mechanical feature of the material and the interferometric-intensity demodulation mechanism, the sensor diaphragm shift sensitivity of 0.72 nm/Pa, correspond to an acoustic pressure to voltage sensitivity of 5.56mV/Pa has been achieved. Experimental results sh

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Bai, Yufang, Jie Zeng, Jiwei Huang, Shaolong Zhong, Zhuming Cheng, and Dakai Liang. "Measurement of Structural Loads Using a Novel MEMS Extrinsic Fabry–Perot Strain Sensor." Applied Sciences 10, no. 1 (2019): 18. http://dx.doi.org/10.3390/app10010018.

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In this paper, microelectromechanical systems (MEMS) technology was used to fabricate a novel extrinsic fiber Fabry–Perot (EFFP) strain sensor; this fiber sensor is applied to measure load with higher precision for a small structure. The sensor cavity consists of two Fabry–Perot (FP) cavity mirrors that are processed by surface micromachining and then fused and spliced together by the silicon–glass anode bonding process. The initial cavity length can be strictly controlled, and the excellent parallelism of the two faces of the cavity results in a high interference fineness. Then, the anti-refl

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Ran, Zengling, Xiu He, Yunjiang Rao, et al. "Fiber-Optic Microstructure Sensors: A Review." Photonic Sensors 11, no. 2 (2021): 227–61. http://dx.doi.org/10.1007/s13320-021-0632-7.

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AbstractThis paper reviews a wide variety of fiber-optic microstructure (FOM) sensors, such as fiber Bragg grating (FBG) sensors, long-period fiber grating (LPFG) sensors, Fabry-Perot interferometer (FPI) sensors, Mach-Zehnder interferometer (MZI) sensors, Michelson interferometer (MI) sensors, and Sagnac interferometer (SI) sensors. Each FOM sensor has been introduced in the terms of structure types, fabrication methods, and their sensing applications. In addition, the sensing characteristics of different structures under the same type of FOM sensor are compared, and the sensing characteristi

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