TITLE

Highly Sensitive Temperature Sensors Based on Fiber-Optic PWM and Capacitance Variation Using Thermochromic Sensing Membrane

AUTHOR(S)
Rahaman Khan, Md. Rajibur; Shin-Won Kang
PUB. DATE
July 2016
SOURCE
Sensors (14248220);Jul2016, Vol. 16 Issue 7, p1064
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In this paper, we propose a temperature/thermal sensor that contains a Rhodamine-B sensing membrane. We applied two different sensing methods, namely, fiber-optic pulse width modulation (PWM) and an interdigitated capacitor (IDC)-based temperature sensor to measure the temperature from 5 °C to 100 °C. To the best of our knowledge, the fiber-optic PWM-based temperature sensor is reported for the first time in this study. The proposed fiber-optic PWM temperature sensor has good sensing ability; its sensitivity is ~3.733 mV/°C. The designed temperature-sensing system offers stable sensing responses over a wide dynamic range, good reproducibility properties with a relative standard deviation (RSD) of ~0.021, and the capacity for a linear sensing response with a correlation coefficient of R2 ≈ 0.992 over a wide sensing range. In our study, we also developed an IDC temperature sensor that is based on the capacitance variation principle as the IDC sensing element is heated. We compared the performance of the proposed temperature-sensing systems with different fiber-optic temperature sensors (which are based on the fiber-optic wavelength shift method, the long grating fiber-optic Sagnac loop, and probe type fiber-optics) in terms of sensitivity, dynamic range, and linearity. We observed that the proposed sensing systems have better sensing performance than the above-mentioned sensing system.
ACCESSION #
120540727

 

Related Articles

  • A Photonic Crystal Fiber and Fiber Bragg Grating-Based Hybrid Fiber-Optic Sensor System. Rajan, G.; Ramakrishnan, M.; Semenova, Y.; Milenko, K. // Fiber Optic Sensors & Systems;Feb2012, Vol. 26 Issue 2, p3 

    A hybrid sensor that operates in the intensity domain by converting the polarization and wavelength information from the photonic crystal fiber sensor and fiber Bragg grating (FBG) sensor, respectively, into intensity variation is presented in this paper. The hybrid fiber-optic sensor system...

  • A Photonic Crystal Fiber and Fiber Bragg Grating-Based Hybrid Fiber-Optic Sensor System. Rajan, G.; Ramakrishnan, M.; Semenova, Y.; Milenko, K. // Fiber Optic Sensors & Systems;Mar2012, Vol. 26 Issue 3, p9 

    A hybrid sensor that operates in the intensity domain by converting the polarization and wavelength information from the photonic crystal fiber sensor and fiber Bragg grating (FBG) sensor, respectively, into intensity variation is presented in this paper. The hybrid fiber-optic sensor system...

  • High Temperature Endurable Fiber Optic Accelerometer. Yeon-Gwan Lee; Jin-Hyuk Kim; Chun-Gon Kim // Shock & Vibration;2014, p1 

    This paper presents a low frequency fiber optic accelerometer for application in high temperature environments of civil engineering structures. The reflection-based extrinsic fiber optic accelerometer developed in this study consists of a transmissive grating panel, reflective mirror, and two...

  • Fiber-linked interferometric pressure sensor. Beheim, G.; Fritsch, K.; Poorman, R. N. // Review of Scientific Instruments;Sep87, Vol. 58 Issue 9, p1655 

    A fiber-optic pressure sensor is described which uses a diaphragm to modulate the mirror separation of a Fabry–Perot cavity (the sensing cavity). A multimode optical fiber delivers broadband light to the sensing cavity and returns the spectrally modulated light which the cavity reflects....

  • Temperature-independent polymer optical fiber evanescent wave sensor. Zhong, Nianbing; Liao, Qiang; Zhu, Xun; Zhao, Mingfu; Huang, Yun; Chen, Rong // Scientific Reports;6/26/2015, p11508 

    Although the numerous advantages of polymer optical fibers have been exploited in the fields of sensors and telecommunications, such fibers still experience a critical problem: the temperature dependency. Therefore, we explored the temperature-independent operation of a polymer fiber-optic...

  • Push–pull fiber optic inclinometer based on a Mach–Zehnder optical low-coherence reflectometor. Yuan, Li-Bo // Review of Scientific Instruments;Jun2004, Vol. 75 Issue 6, p2013 

    A push–pull inclinometer based on the gravity-referenced rotation fiber optic sensing system is demonstrated by using a specially designed parallelogram pendulum. It measures the angle variations between a nominally vertical reference line in the civil structure and the direction of...

  • Development of a 2-Channel Embedded Infrared Fiber-Optic Temperature Sensor Using Silver Halide Optical Fibers. Wook Jae Yoo; Kyoung Won Jang; Jeong Ki Seo; Jinsoo Moon; Ki-Tek Han; Jang-Yeon Park; Byung Gi Park; Bongsoo Lee // Sensors (14248220);2011, Vol. 11 Issue 10, p9549 

    A 2-channel embedded infrared fiber-optic temperature sensor was fabricated using two identical silver halide optical fibers for accurate thermometry without complicated calibration processes. In this study, we measured the output voltages of signal and reference probes according to temperature...

  • A Fiber-Optic Microbending Temperature Sensor. Denisov, I. V.; Sedov, V. A.; Rybal'chenko, N. A. // Instruments & Experimental Techniques;Sep/Oct2005, Vol. 48 Issue 5, p683 

    A fiber-optic amplitude sensor based on the effect of microbending-caused upsetting of total internal reflection and intended for temperature monitoring is described. A measuring-system prototype was developed for investigating the sensor characteristics. The measured sensor characteristics show...

  • Spatial Frequency Multiplexing of Fiber-Optic Interferometric Refractive Index Sensors Based on Graded-Index Multimode Fibers. Li Liu; Yuan Gong; Yu Wu; Tian Zhao; Hui-Juan Wu; Yun-Jiang Rao // Sensors (14248220);2012, Vol. 12 Issue 9, p12377 

    Fiber-optic interferometric sensors based on graded-index multimode fibers have very high refractive-index sensitivity, as we previously demonstrated. In this paper, spatial-frequency multiplexing of this type of fiber-optic refractive index sensors is investigated. It is estimated that...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics