Optical fiber strain sensor with double S-tapers

Yan, Shibo; Zhao, Yong; Chen, M.-Q.; Liu, Q.

doi:10.1080/10739149.2020.1840387

Cited by 10 publications

(4 citation statements)

References 24 publications

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“…Table 2 includes a direct comparison of the sensing performance of the sensors described in this study with other sensors for dual parametric measurements of strain and temperature. Compared to some sensing configurations that have been reported [14,15], the strain sensitivity of the sensors proposed in this thesis is relatively low, but they suffer from a certain amount of temperature crosstalk that cannot be resolved at present. Compared to previous work on simultaneous strain and temperature measurements using cascaded FBG and LPG, the incorporation of the AR effect appears to be more convenient and much less costly.…”

Section: Repeatability Measurementmentioning

confidence: 90%

“…The following year, the same authors developed a dual S-tapered fiber strain sensor with a strain sensitivity of 6.63 pm/µε. Both of these tapered structures exhibit low temperature sensitivity, thereby eliminating the need to consider temperature-induced cross-talk [14][15][16]. Another approach is to use a cascade structure to achieve simultaneous measurement of temperature and the desired physical parameters.…”

Section: Introductionmentioning

confidence: 99%

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Dual-Parameter Sensor for Temperature and Strain Measurement Based on Antiresonance Effect and Few-Mode Fiber

et al. 2023

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A simple and novel hybrid interferometer based on the antiresonance (AR) effect and Mach–Zehnder interference (MZI), which enables simultaneous measurement of temperature and strain, is proposed and investigated. The sensor is made by cascading a 30 cm section of a few-mode fiber (FMF) and a 3.376 mm hollow-core fiber (HCF) through a single-mode fiber (SMF). The FMF and SMF are fused without misalignment to excite two stable modes, thereby forming a Mach–Zehnder interferometer. Concurrently, the introduction of HCF can effectively excite the AR effect, which is manifested in the transmission spectrum as two different dips at the same time caused by the difference in the two physical mechanisms, showing diverse responses to both external temperature and strain. This difference can be used to construct a cross-coefficient matrix to implement the simultaneous measurement of temperature and strain. The experimental results demonstrate that the AR effect and MZI correspond to strain sensitivities of –0.87 and –2.29 pm/µε, respectively, and temperature sensitivities of 15.68 and –13.93 pm/°C, respectively. Furthermore, the sensor is also tested for repeatability, and the results show that it has good repeatability and great potential in sensing applications.

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Section: Repeatability Measurementmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Dual-Parameter Sensor for Temperature and Strain Measurement Based on Antiresonance Effect and Few-Mode Fiber

et al. 2023

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“…Fiber optic sensors have been widely used in civil engineering, aerospace, biomedicine, and other fields due to their high sensitivity, strong anti-interference ability and good reversibility [1]- [3]. Fiber sensors based on interferometers [4]- [7] are widely designed because their principles are usually simple and spectrums are clear for observing. There are several types of the fiber interferometers, Fabry-Pérot (F-P) [4],…”

Section: Introductionmentioning

confidence: 99%

“…Mach Zehnder (M-Z) interferometers [6], [7], fiber ring resonators [8] and fiber loop (Sagnac) interferometers are the most common. Among them, fiber loop interferometers are usually based on birefringence characteristics of the fibers embedded in the loop, they are polarization independent, both the phase differences and extinction ratio of interference dips can be tuned flexibly.…”

Section: Introductionmentioning

confidence: 99%