Using a Fiber Loop and Fiber Bragg Grating as a Fiber  Optic Sensor to Simultaneously Measure Temperature  and Displacement

Chang, Yao-Tang; Yen, Chih-Ta; Wu, Yue-Shiun; Cheng, Hsu-Chih

doi:10.3390/s130506542

Cited by 19 publications

(13 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This approach can be combined with most interferometric and grating principles that are otherwise utilized for measurement of other parameters (temperature, pressure, etc.). 1,[133][134][135][136][137][138][139][140][141][142][143][144][145][146][147][148] In more advanced designs, measurement of the reflection ratio from two adjacent sensors' surfaces is utilized to reduce the sensitivity of the measurement to variability in interrogator-to-sensor interconnection losses and source variability. This is achieved through proper signal processing that utilizes IDFT of back-reflected spectrum to determine and compare reflectance from multiple sensors' surfaces, 134,135,139 as shown in Fig.…”

Section: Multiparameter Sensors Based On Combinations Of Interferometmentioning

confidence: 99%

Multiparameter fiber-optic sensors: a review

2019

View full text Add to dashboard Cite

Needs for sensor miniaturization, versatile sensing solutions, and improved measurements' performances in difficult operating environments have recently driven considerable research in optical fiber sensor for multiparameter measurements. Multiparameter sensors not only enable new sensors' functionalities, but can also improve achievable measurement performances for some frequently measured parameters considerably. This study provides a review of work in the field of miniature fiber-optic sensors that allows independent and simultaneous measurements of two or more different physical or chemical parameters. Sensor designs and corresponding signal processing schemes are reviewed and compared.

show abstract

Section: Multiparameter Sensors Based On Combinations Of Interferometmentioning

confidence: 99%

Multiparameter fiber-optic sensors: a review

2019

View full text Add to dashboard Cite

show abstract

“…Owing to the cross-sensitivity of temperature and mechanic parameters, some difficulties arise when the fiber grating sensors are applied for measuring temperature and mechanic parameters, respectively. In order to resolve this problem, some methods such as two FBGs [1], hybrid FBG/ Lyot fiber filter [2] and hybrid FBG/ fiber loop [3] have been reported. These methods provided some approached to distinguish the cross-sensitivity effect between temperature and mechanic parameters.…”

Section: Introductionmentioning

confidence: 99%

Fiber Bragg grating sensor for simultaneous measurement of temperature and force using polymer open loop

Huang

Zhang

2014

SPIE Proceedings

View full text Add to dashboard Cite

A fiber Bragg grating (FBG) sensor for simultaneous measurement of temperature and force is proposed and demonstrated. Where a part of uniform FBG (about one half length of an FBG) is attached on the polymer open loop, the FBG is divided into two parts which has an equal length. So the two parts can be regarded as two FBGs. Because of the difference of the Young's modulus and the thermal expansion coefficients for two parts of the FBG, the two Bragg reflection wavelengths are shift when the temperature and force are applied on the sensor. Simultaneous measurement of temperature and force is demonstrated experimentally. The experimental results show that the linear response to temperature and force are achieved. The value of applied temperature and force can be obtained from the two Bragg wavelength shift via the coefficient matrix. This study provides a simple and economical method to measure temperature and force simultaneously.

show abstract

“…Recently, sensors based on the bent fiber have been extensively investigated due to their easy fabrication method and simple configuration. Acoustic, temperature, displacement sensors have already been reported using bending-induced birefringence in a fiber [1][2][3][4][5][6]. Evanescent wave sensor [7] and refractive index (RI) sensor [8] have also been realized based on the bending-induced transmission loss.…”

Section: Introductionmentioning

confidence: 99%

High sensitivity refractive index sensor based on the semicircular bent fiber

Zhang

2018

J. Phys. Commun.

View full text Add to dashboard Cite

A refractive index sensor based on a semicircular bent fiber is presented. The interference occurs between the cladding mode excited in the bending region and the core mode. The experimental results show that the resonant dip wavelength decreases linearly with the increase of the refractive index of the surrounding environment and the sensitivity of the sensor increases linearly with the increasing of the bending radius. A high sensitivity of 1031 nm per refractive index unit is obtained over the refractive index range of 1.3324 to 1.3435 by using a bent fiber with a bending radius of 500 μm.

show abstract

Using a Fiber Loop and Fiber Bragg Grating as a Fiber Optic Sensor to Simultaneously Measure Temperature and Displacement

Cited by 19 publications

References 10 publications

Multiparameter fiber-optic sensors: a review

Multiparameter fiber-optic sensors: a review

Fiber Bragg grating sensor for simultaneous measurement of temperature and force using polymer open loop

High sensitivity refractive index sensor based on the semicircular bent fiber

Contact Info

Product

Resources

About