Interferogram Reconstruction of Cascaded Coaxial Cable Fabry-Perot Interferometers for Distributed Sensing Application

Huang, Jie; Lan, Xinwei; Zhu, Wenge; Cheng, Baokai; Fan, Jun; Zhou, Zhi; Xiao, Hai

doi:10.1109/jsen.2016.2530839

Cited by 32 publications

(11 citation statements)

References 15 publications

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“…A negative reflection occurs when the distance decreases or the permittivity increases. The time domain reflectometry and the frequency domain reflectometry are commonly used to detect the impedance variation along a continuous transmission line . As shown in Figure a, the interrogation signal is partially reflected at each point where impedance change occurs.…”

Section: Resultsmentioning

confidence: 99%

Flexible Multi‐Material Fibers for Distributed Pressure and Temperature Sensing

Parker

Xuan

et al. 2020

Adv Funct Materials

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With the recent development of wearable electronics and smart textiles, flexible sensor technology is gaining increasing attention. Compared to flexible film‐based sensors, multimaterial fiber‐based technology offers unique advantages due to the breathability, durability, wear resistance, and stretchability in fabric structures. Despite the significant progress made in the fabrication and application of fiber‐based sensors, none of the existing fiber technologies allow for fully distributed pressure or temperature sensing. Herein, the design and fabrication of thermally drawn multi‐material fibers that offer distributed temperature and pressure measurement capability is reported. Thermoplastic materials, thermoplastic elastomers, and metal electrodes are successfully co‐drawn in one fiber. The embedded electrodes inside the fibers form a parallel wire transmission line, and the local characteristic impedance is designed to change with the temperature or pressure. The electrical frequency domain reflectometry is used to interrogate the impedance change along the fiber and provides information with high spatial resolution. The two types of fibers reported in this manuscript have a pressure sensitivity of 4 kPa and a temperature sensitivity of 2 °C, respectively. This work can pave the road for development of functional fibers and textiles for pressure and temperature mapping.

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Section: Resultsmentioning

confidence: 99%

Flexible Multi‐Material Fibers for Distributed Pressure and Temperature Sensing

Parker

Xuan

et al. 2020

Adv Funct Materials

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“…This technique comes from the joint-time-frequency domain demodulation method, which is the method to realize the distributed sensing capability in cascaded coaxial cable Fabry-Perot interferometry. The details of this technique can be found in [13]. After the transformation, the interference spectrum of the Fabrt-Perot cavity is obtained in frequency domain.…”

Section: Methodsmentioning

confidence: 99%

“…Different from optical signal, the phase of microwave signals that transmit on the coaxial cables can be easily obtained from commercially available equipment, such as vector network analyser (VNA). With the help of Fourier transform, people can obtain and manipulate both the time domain and frequency domain microwave signal, which offers distributed sensing capability to coaxial cable sensing platform [13].…”

Section: Introductionmentioning

confidence: 99%

A coaxial cable magnetic field sensor based on ferrofluid filled Fabry-Perot interferometer structure

Cheng

Yuan

Zhu

et al. 2017

Sensors and Actuators A: Physical

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A ferrofluid filled coaxial cable Fabry-Perot interferometer is proposed for magnetic field sensing. Both the interferogram shift and the reflection intensity change of the sensor response are studied when external magnetic field is applied. The sensor is tested to work from 0 Gauss to 160 Gauss, and has a highly linear response above 50 Gauss, with the sensitivity of 459 kHz/Gauss. This sensor can be integrated into a coaxial cable sensing platform for multi-function or distributed sensing applications.

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“…Typically, a coaxial cable is formed by an inner conductor, an outer conductor, and a dielectric layer sandwiched in-between the two conductors. In recent years, some of the fiber optic sensing technologies have been adopted onto coaxial cables [ 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 ]. This is because coaxial cables are much more robust than optical fibers regarding mechanical strength.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, some of the challenging issues (e.g., fragility, bend sensitivity, and difficulty in employing) faced by optical fiber sensors are no longer a concern for coaxial cable sensors. For example, coaxial cable Bragg gratings (CCBGs) [ 20 , 21 ] and coaxial cable Fabry-Perot interferometers (CCFPIs) [ 22 , 23 ] have already been demonstrated effective for large strain measurements. Recently, we proposed a coaxial cable Fabry-Perot resonator (CCFPR) for temperature measurement in the range of 35 to 80 °C [ 26 ].…”

Section: Introductionmentioning

confidence: 99%

Displacement and Strain Measurement up to 1000 °C Using a Hollow Coaxial Cable Fabry-Perot Resonator

Zhu

Chen

Zhuang

et al. 2018

Sensors

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We present a hollow coaxial cable Fabry-Perot resonator for displacement and strain measurement up to 1000 °C. By employing a novel homemade hollow coaxial cable made of stainless steel as a sensing platform, the high-temperature tolerance of the sensor is dramatically improved. A Fabry-Perot resonator is implemented on this hollow coaxial cable by introducing two highly-reflective reflectors along the cable. Based on a nested structure design, the external displacement and strain can be directly correlated to the cavity length of the resonator. By tracking the shift of the amplitude reflection spectrum of the microwave resonator, the applied displacement and strain can be determined. The displacement measurement experiment showed that the sensor could function properly up to 1000 °C. The sensor was also employed to measure the thermal strain of a steel plate during the heating process. The stability of the novel sensor was also investigated. The developed sensing platform and sensing configurations are robust, cost-effective, easy to manufacture, and can be flexibly designed for many other measurement applications in harsh high-temperature environments.

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Interferogram Reconstruction of Cascaded Coaxial Cable Fabry-Perot Interferometers for Distributed Sensing Application

Cited by 32 publications

References 15 publications

Flexible Multi‐Material Fibers for Distributed Pressure and Temperature Sensing

Flexible Multi‐Material Fibers for Distributed Pressure and Temperature Sensing

A coaxial cable magnetic field sensor based on ferrofluid filled Fabry-Perot interferometer structure

Displacement and Strain Measurement up to 1000 °C Using a Hollow Coaxial Cable Fabry-Perot Resonator

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