Compact Fiber Sensor With High Spatial Resolution for Simultaneous Strain and Temperature Measurement

Cao, Zhen; Ji, Xiaochun; Wang, Rui; Zhang, Zhao; Shui, Tao; Xu, Feng; Yu, Benli

doi:10.1109/jsen.2012.2237092

Cited by 31 publications

(8 citation statements)

References 11 publications

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“…Among others, a hybrid sensing scheme combining BOTDA in a loss configuration and SpRS requiring two separate lasers for the two scattering phenomena has been proposed [32], but it does not allow concurrent measurements as the source has to be used alternatively. A method for complete discrimination of strain and temperature based on a polarization maintaining fiber [33], and distributed measurement of Brillouin frequency shift and birefringence at short distances has been demonstrated [34] as well as one for simultaneous measurement of the Rayleigh and SpBS components [35]. Another investigation involved the study of fibers with multiple acoustic modes for simultaneous strain and temperature measurements [36].…”

Section: Pulse Coding In Rdts and Addressing Cross-sensitivity Betweementioning

confidence: 99%

Application of Raman and Brillouin Scattering Phenomena in Distributed Optical Fiber Sensing

2019

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Section: Pulse Coding In Rdts and Addressing Cross-sensitivity Betweementioning

confidence: 99%

Application of Raman and Brillouin Scattering Phenomena in Distributed Optical Fiber Sensing

2019

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“…Comparing to other types of optical fiber sensors, the MZI typed sensors are well-known for their good qualities of low cost, robustness, simple structure and easy fabrication process, which make them suitable for various applications, like temperature, RI, strain, and so on. However, researchers also noticed that the conventional MZI typed sensing systems illuminated by broadband light sources [ 21 , 22 , 23 , 24 , 25 ] have to suffer the problem of low measurement resolution and a big difficulty in remote sensing. Recently, the focus on the combination of FRL and MZI find a new way to solve such problems.…”

Section: Sensing Applicationsmentioning

confidence: 99%

Optical Fiber Sensors Based on Fiber Ring Laser Demodulation Technology

Xie

Zhang

Wang

et al. 2018

Sensors

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A review for optical fiber sensors based on fiber ring laser (FRL) demodulation technology is presented. The review focuses on the principles, main structures, and the sensing performances of different kinds of optical fiber sensors based on FRLs. First of all, the theory background of the sensors has been discussed. Secondly, four different types of sensors are described and compared, which includes Mach–Zehnder interferometer (MZI) typed sensors, Fabry–Perot interferometer (FPI) typed sensors, Sagnac typed sensors, and fiber Bragg grating (FBG) typed sensors. Typical studies and main properties of each type of sensors are presented. Thirdly, a comparison of different types of sensors are made. Finally, the existing problems and future research directions are pointed out and analyzed.

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“…The elastooptical effect is stronger for the light closer to the edge of the cladding, which makes the corroded fiber optic sensor sensitive to the strain. Cao et al [15] measured the strain sensing by a photosensitive fiber (PSF) core-offset splicing structure sensor and gained a sensitivity of −0.64 pm/ . Xu et al [16] used the SMF-PCF-SMF structure to measure the strain and got the sensitivity of 3.02 pm/ .…”

Section: Experiments Processmentioning

confidence: 99%

Temperature Insensitive Strain Sensor with Asymmetrical Cascading Structure Based on Photonic Crystal Fiber in Chemical Corrosion

Yang

et al. 2017

Journal of Sensors

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In this paper, a corroded photonic crystal fiber (PCF) sensor is presented on the basis of core-offset splicing and waist-enlarged fiber taper corroded by hydrofluoric acid (HF). The Mach-Zehnder interference theory is used to analyze the relationship between transmission spectrum and strain. The final results obtained from experiments show that the strain sensor's sensitivity is about −6.57 pm/ and the linearity is 0.99962 within the range of 0∼1000 , while the sensor is corroded by HF for 35 minutes at room temperature. In the temperature range of 20 ∘ C∼80 ∘ C, the sensor's sensitivity to temperature is only 1.63 pm/ ∘ C, which is insensitive to temperature. Because of its advantage compared to traditional optical fiber sensors, this sensor can avert the cross-sensitive problem when temperature and strain are measured together and has some other advantages including easily fabricated, simple structure and accurate sensitivity. It can be used in many fields, such as industrial production, monitoring, and aerospace.

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Compact Fiber Sensor With High Spatial Resolution for Simultaneous Strain and Temperature Measurement

Cited by 31 publications

References 11 publications

Application of Raman and Brillouin Scattering Phenomena in Distributed Optical Fiber Sensing

Application of Raman and Brillouin Scattering Phenomena in Distributed Optical Fiber Sensing

Optical Fiber Sensors Based on Fiber Ring Laser Demodulation Technology

Temperature Insensitive Strain Sensor with Asymmetrical Cascading Structure Based on Photonic Crystal Fiber in Chemical Corrosion

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