In-Fiber Gratings for Simultaneous Monitoring Temperature and Strain in Ultrahigh Temperature

Yang, Hangzhou; Qiao, Xue Guang; Wang, Yu Peng; Ali, Muhammad Mahmood; Lai, Ming Kuen; Lim, Kok-Sing; Ahmad, Harith

doi:10.1109/lpt.2014.2361768

Cited by 44 publications

(10 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They share similar strain sensitivities but different temperature sensitivities for different orders of modes. These properties are exploited for discrimination measurement between temperature and strain [21]. This finding has inspired us to use FMFBG in our work on RI and temperature sensing.…”

Section: Introductionmentioning

confidence: 93%

“…Particularly in the case of single element sensor with multi-parameter sensing ability, the sensitivities of each parameter may be the functions of other parameters. For accurate discriminative measurement, cross sensitivity should be taken into measurement with the aid of 3 × 3 characteristic matrix [21]. Simulation on the proposed sensor is performed to identify the transverse mode of each Bragg wavelengths.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Cladless few mode fiber grating sensor for simultaneous refractive index and temperature measurement

Yang

Ali

Islam

et al. 2015

Sensors and Actuators A: Physical

Self Cite

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Cladless few mode fiber grating sensor for simultaneous refractive index and temperature measurement

Yang

Ali

Islam

et al. 2015

Sensors and Actuators A: Physical

Self Cite

View full text Add to dashboard Cite

“…Optical fiber sensors have attracted significant research interest and have been widely used to monitor the health of smart engineering structures due to their unique advantages of compact size, low cost, high sensitivity, and immunity to electromagnetic interference [ 1 , 2 , 3 , 4 ].Curvature, bending, and strain of engineering structures are important parameters closely associated with the mechanical loading and health condition of the structures. Many sensors based on optical fibers have been proposed for bending or strain measurement, such as Long period Grating (LPG) [ 5 , 6 ], FBG [ 7 , 8 , 9 ], and Mach-Zehnder interferometers [ 10 , 11 , 12 , 13 ], etc.…”

Section: Introductionmentioning

confidence: 99%

Curvature and Temperature Measurement Based on a Few-Mode PCF Formed M-Z-I and an Embedded FBG

Liu

Yang

Qiao

et al. 2017

Sensors

Self Cite

View full text Add to dashboard Cite

We have experimentally demonstrated an optical fiber Mach-Zehnder interferometer (MZI) structure formed by a few-mode photonic crystal fiber (PCF) for curvature measurement and inscribed a fiber Bragg grating (FBG) in the PCF for the purpose of simultaneously measuring temperature. The structure consists of a PCF sandwiched between two multi-mode fibers (MMFs). Bending experimental results show that the proposed sensor has a sensitivity of −1.03 nm/m−1 at a curvature range from 10 m−1 to 22.4 m−1, and the curvature sensitivity of the embedded FBG was −0.003 nm/m−1. Temperature response experimental results showed that the MZI’s wavelength, λa, has a sensitivity of 60.3 pm/°C, and the FBG’s Bragg wavelength, λb, has sensitivity of 9.2 pm/°C in the temperature range of 8 to 100 °C. As such, it can be used for simultaneous measurement of curvature and temperature over ranges of 10 m−1 to 22.4 m−1 and 8 °C to 100 °C, respectively. The results show that the embedded FBG can be a good indicator to compensate the varying ambient temperature during a curvature measurement.

show abstract

“…In general, a typical SHM system comprises the integration of sensor techniques [1], smart materials, data interrogation and transmission, computational power, and processing ability inside the structures. Among these components in an SHM system, sensor technique plays an important role in monitoring not only the structural status—such as stress, displacement, acceleration, and vibration [2,3,4]—but also the influential environment parameters, for instance, wind speed, temperature, and others [5,6]. Reinforced concrete (RC) beam vibration detection provides tremendous information that indicates the health of a building.…”

Section: Introductionmentioning

confidence: 99%

Tapered Polymer Fiber Sensors for Reinforced Concrete Beam Vibration Detection

Luo

Ibrahim

et al. 2016

Sensors

View full text Add to dashboard Cite

In this study, tapered polymer fiber sensors (TPFSs) have been employed to detect the vibration of a reinforced concrete beam (RC beam). The sensing principle was based on transmission modes theory. The natural frequency of an RC beam was theoretically analyzed. Experiments were carried out with sensors mounted on the surface or embedded in the RC beam. Vibration detection results agreed well with Kistler accelerometers. The experimental results found that both the accelerometer and TPFS detected the natural frequency function of a vibrated RC beam well. The mode shapes of the RC beam were also found by using the TPFSs. The proposed vibration detection method provides a cost-comparable solution for a structural health monitoring (SHM) system in civil engineering.

show abstract

In-Fiber Gratings for Simultaneous Monitoring Temperature and Strain in Ultrahigh Temperature

Cited by 44 publications

References 13 publications

Cladless few mode fiber grating sensor for simultaneous refractive index and temperature measurement

Cladless few mode fiber grating sensor for simultaneous refractive index and temperature measurement

Curvature and Temperature Measurement Based on a Few-Mode PCF Formed M-Z-I and an Embedded FBG

Tapered Polymer Fiber Sensors for Reinforced Concrete Beam Vibration Detection

Contact Info

Product

Resources

About