Highly Sensitive Temperature and Pressure Sensor Based on Fabry–Perot Interference

Bai, Ya; Qi, Yanhui; Dong, Yue; Jian, Shuisheng

doi:10.1109/lpt.2016.2601619

Cited by 18 publications

(8 citation statements)

References 13 publications

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“…Over the last couple of years, various types of optical fiber pressure and temperature sensors have been extensively investigated and developed. Most of them are on the basis of Mach-Zehnder interferometer (MZI) [5][6][7], fiber Bragg gratings (FBG) [8][9][10], Sagnac interferometer (SI) [11,12], and the Fabry-Pérot interferometer (FPI) [13][14][15][16][17][18][19][20], etc. Among these sensing structures, the FPI-based sensors have attracted increasing attention due to simple structure, compact size and high accuracy.…”

Section: Introductionmentioning

confidence: 99%

“…The sensor included an incident SMF, a capillary pure silica tube, and the gap was filled with refractive index matching liquid. A temperature sensitivity of 6.95 nm/ • C was achieved and the structure showed a pressure sensitivity of 0.15 nm/Pa [17]. However, the usage of refractive index matching liquid made it not reliable in actual application.…”

Section: Introductionmentioning

confidence: 99%

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Simultaneous Measurement of Temperature and Pressure Based on Fabry-Perot Interferometry for Marine Monitoring

Zhang

Mei

Xia

et al. 2022

Sensors

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The temperature and pressure of seawater are of great importance to investigate the environmental evolution for the research of ocean science. With this regard, we proposed and experimentally demonstrated a seawater temperature and pressure sensor realized by a polyimide (PI) tube-based Fabry-Perot interferometer (FPI) together with a fiber Bragg grating (FBG). Benefiting from the higher thermo-optical coefficient and larger elasticity of polymer than the fused silica fiber, the sensitivity of the sensor is largely improved. The FBG is used to compensate the cross effect of the temperature. The measured temperature and pressure sensitivities of the sensor are 18.910 nm/°C and −35.605 nm/MPa, respectively. Furthermore, the temperature and pressure information measured by the sensor can be achieved simultaneously using the sensitivity matrix method. In addition, the proposed sensor has advantages of easy fabrication, compact size, as well as capability of multiplexing and long-distance measurement, making it competitive and promising during the marine monitoring.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Simultaneous Measurement of Temperature and Pressure Based on Fabry-Perot Interferometry for Marine Monitoring

Zhang

Mei

Xia

et al. 2022

Sensors

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“…Several studies have characterized the investigations of single or dual-parameter monitoring based on fiber tip bubble [3], Mach-Zehnder interferometer [4], fiber Bragg gratings [5], Sagnac interferometer [6], etc. Due to the advantages of small size, good measurement performance, and survivability in complicated electromagnetic environment [7][8][9][10][11][12][13][14][15][16][17][18][19], Fabry-Perot Interferometer (FPI)-based dual-parameter fiber sensors have been extensively studied for the measurement of temperature and pressure. However, FPI-based fiber sensors impose the limitation of the durability and operation stability of the thin diaphragm that is used to form the FP cavity.…”

Section: Introductionmentioning

confidence: 99%

“…However, FPI-based fiber sensors impose the limitation of the durability and operation stability of the thin diaphragm that is used to form the FP cavity. Consequently, series of dual FP cavities sensors based on various diaphragms to improve the sensing performance are utilized to monitor the temperature and pressure [7][8][9][10][11][12], which share the characteristic of ultra-high sensitivity. While endlessly pursuing high sensitivity will bring several problems which should be paid more attention, only this kind of fiber sensor can be applied for ultra-precise monitoring applications.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Composite Structure with Dual Fabry–Perot Cavities for Temperature and Pressure Sensing

Wang

Liu

et al. 2021

Photonics

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To deeply analyze the influence of diaphragm materials on the temperature and pressure sensitivity of Fabry–Perot interferometer-based dual-parameter fiber sensors, the multiple transfer method was used to fabricate the dual Fabry–Perot cavities, respectively, consisting of the following combinations: epoxy resin AB/polydimethylsiloxane (PDMS), Ecoflex0030 silicone rubber /PDMS, and PDMS/Ecoflex0030 silicone rubber. Experimental results show that the temperature sensitivities are, respectively, 528, 540, and 1033 pm/°C in the range of 40–100 °C. Within the applied pressure range of 100–400 kPa, the pressure sensitivities are, respectively, 16.0, 34.6, and 30.2 pm/kPa. The proposed sensors have advantages of proper sensitivity, simple fabrication, cost-effectiveness, controllable cavity length, and suitability for practical sensing applications.

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“…Furthermore, significant advances have been made in the development of implantable photonic device technologies [14] thereby demonstrating unique advantages including battery-free operation, compact size, and high-sensitivity in biomedical applications. One way to achieve a miniaturized optical pressure sensor is combining a micro Fabry-Pérot (FP) interferometer [15][16][17][18] with pressure sensitive membrane and subsequently mapping the spectral-shift to the different pressure states. Similarly, photonic crystals [19], [20] and optical strain sensors [21] were also suggested for optical IOP sensing applications [22], [23].…”

Section: Introductionmentioning

confidence: 99%

Fabry–Pérot Optical Sensor and Portable Detector for Monitoring High-Resolution Ocular Hemodynamics

Lee

Narasimhan

Balakrishna

et al. 2019

IEEE Photon. Technol. Lett.

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Our understanding of ocular hemodynamics and its role in ophthalmic disease progression remains unclear due to the shortcomings of precise and on-demand biomedical sensing technologies. Here, we report high-resolution in vivo assessment of ocular hemodynamics using a Fabry-Pérot cavitybased micro-optical sensor and a portable optical detector. The designed optical system is capable of measuring both static intraocular pressure and dynamic ocular pulsation profiles in parallel. Through a dynamic intensity variation analysis method which improves sensing resolution by 3-4 folds, our system is able to extract systolic/diastolic phases from a single ocular pulsation profile. Using a portable detector, we performed in vivo studies on rabbits and verified that ophthalmic parameters obtained from our optical system closely match with traditional techniques such as tonometry, electrocardiography, and photo-plethysmography.

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Highly Sensitive Temperature and Pressure Sensor Based on Fabry–Perot Interference

Cited by 18 publications

References 13 publications

Simultaneous Measurement of Temperature and Pressure Based on Fabry-Perot Interferometry for Marine Monitoring

Simultaneous Measurement of Temperature and Pressure Based on Fabry-Perot Interferometry for Marine Monitoring

Investigation of Composite Structure with Dual Fabry–Perot Cavities for Temperature and Pressure Sensing

Fabry–Pérot Optical Sensor and Portable Detector for Monitoring High-Resolution Ocular Hemodynamics

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