High Temperature (Up to 950 °C) Sensor Based on Micro Taper In-Line Fiber Mach–Zehnder Interferometer

Liao, Yicheng; Liu, Bin; Liu, Juan; Wan, Shengpeng; He, Xingdao; Yuan, Jinhui; Fan, Xinyu; Wu, Qiang

doi:10.3390/app9122394

Cited by 14 publications

(8 citation statements)

References 35 publications

(43 reference statements)

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“…8(n)) [171], waist-enlarged SMS fiber structures (Fig. 8(o-p)) [172][173], a spiral microstructure SMS [174], in-line tapers [175][176][177] and a side-polished fiber [178].…”

Section: E Combinations Of Sms Fiber Structuresmentioning

confidence: 99%

Singlemode-Multimode-Singlemode Fiber Structures for Sensing Applications—A Review

Liu

et al. 2021

IEEE Sensors J.

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118

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A singlemode-multimode-singlemode (SMS) fiber structure consists of a short section of multimode fiber fusionspliced between two SMS fibers. The mechanism underpinning the operation of an SMS fiber structure is multimode interference and associated self-imaging. SMS structures can be used in a variety of optical fiber systems but are most commonly used as sensors for a variety of parameters, ranging from macro-world measurands such as temperature, strain, vibration, flow rate, RI and humidity to the micro-world with measurands such as proteins, pathogens, DNA, and specific molecules. While traditional SMS structures employ a short section of standard multimode fiber, a large number of structures have been investigated and demonstrated over the last decade involving the replacement of the multimode fiber section with alternatives such as a hollow core fiber or a tapered fiber. The objective of replacing the multimode fiber has most often been to allow sensing of different measurands or to improve sensitivity. In this paper, several different categories of SMS fiber structures, including traditional SMS, modified SMS and tapered SMS fiber structures are discussed with some theoretical underpinning and reviews of a wide variety of sensing examples and recent advances. The paper then summarizes and compares the performances of a variety of sensors which have been published under a number of headings. The paper concludes by considering the challenges faced by SMS based sensing schemes in terms of their deployment in real world applications and discusses possible future developments of SMS fiber sensors.

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“…8(n)) [171], waist-enlarged SMS fiber structures (Fig. 8(o-p)) [172][173], a spiral microstructure SMS [174], in-line tapers [175][176][177] and a side-polished fiber [178].…”

Section: E Combinations Of Sms Fiber Structuresmentioning

confidence: 99%

Singlemode-Multimode-Singlemode Fiber Structures for Sensing Applications—A Review

Liu

et al. 2021

IEEE Sensors J.

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118

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“…Among these optical fiber sensors, optical fiber MZI sensor has unique advantages such as high sensitivity, ease of fabrication, and all-fiber structure [16]. Therefore, optical fiber MZI sensors are used in a variety of applications, not only for temperature measurement [17,18], but also measurements of RI, liquid level, strain, curvature, humidity and other parameters [19][20][21][22][23][24]. Optical fiber sensors have obvious advantages such as simple fabrication, label-free sensing [25,26].…”

Section: Introductionmentioning

confidence: 99%

Investigation of a Side-Polished Fiber MZI and Its Sensing Performance

Zhang

Liu

et al. 2020

IEEE Sensors J.

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Abstract-A novel all-fiber Mach-Zehnder interferometer (MZI), which consists of lateral core fusion splicing of a short section of side-polished single mode fiber (SMF) between two SMFs was proposed and demonstrated. A simple fiber side-polished platform was built to control the side polished depth through a microscope. The sensitivity of the fiber MZI structure to the surrounding refractive index (RI) can be greatly improved with the increase of the side-polished depth, but has no effect on the temperature sensitivity. The sensor with a polished depth of 44.2 μm measured RI sensitivity up to -118.0 nm/RIU (RI unit) in the RI range from 1.333 to 1.387, which agrees well with simulation results by using the beam propagation method (BPM). In addition, the fiber MZI structure also can achieve simultaneous measurement of both RI and temperature. These results show its potential for use in-line fiber type sensing application.Index Terms-Fiber-optic, side-polished, Mach-Zehnder interferometer, refractive index (RI) Ping Zhang received the B.S. degree from Hefei Normal University in 2018. He is currently pursuing the M.S. degree in optical engineering with Nanchang Hangkong University. His current research interests include optical fiber sensing theory and technology.

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“…In recent years, there has been some research and exploration on in-line fiber optic sensors [17][18][19][20]. Wang et al constructed a Fabry-Perot interferometer by splicing a section of hollow silica glass tube (HST) between two optical fibers to detect high-intensity focused ultrasound [18].…”

Section: Introductionmentioning

confidence: 99%

“…Wang et al constructed a Fabry-Perot interferometer by splicing a section of hollow silica glass tube (HST) between two optical fibers to detect high-intensity focused ultrasound [18]. Liao et al constructed two micro-tapers along the longitudinal direction in a single-mode fiber (SMF), and applied an annealing at 1000 • C to stabilize the temperature measurement [19]. Fang et al constructed an FP cavity in cascaded microbubbles to enhance the sensitivity of strain measurement [20].…”

Section: Introductionmentioning

confidence: 99%

An In-Line Fiber Optic Fabry–Perot Sensor for High-Temperature Vibration Measurement

et al. 2020

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An in-line fiber optic Fabry–Perot (FP) sensor for high-temperature vibration measurement is proposed and experimentally demonstrated in this paper. We constructed an FP cavity and a mass on single-mode fibers (SMFs) by fusion, and together they were inserted into a hollow silica glass tube (HST) to form a vibration sensor. The radial dimension of the sensor was less than 500 μm. With its all-silica structure, the sensor has the prospect of measuring vibration in high-temperature environments. In our test, the sensor had a resonance frequency of 165 Hz. The voltage sensitivity of the sensor system was about 11.57 mV/g and the nonlinearity was about 2.06%. The sensor could work normally when the temperature was below 500 °C, and the drift of the phase offset point with temperature was 0.84 pm/°C.

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High Temperature (Up to 950 °C) Sensor Based on Micro Taper In-Line Fiber Mach–Zehnder Interferometer

Cited by 14 publications

References 35 publications

Singlemode-Multimode-Singlemode Fiber Structures for Sensing Applications—A Review

Singlemode-Multimode-Singlemode Fiber Structures for Sensing Applications—A Review

Investigation of a Side-Polished Fiber MZI and Its Sensing Performance

An In-Line Fiber Optic Fabry–Perot Sensor for High-Temperature Vibration Measurement

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