Balloon-like angle and micro-displacement sensor based on bent single-mode fiber

Ding, Xin; Jin, Tao; Zhang, Rongfu

doi:10.1016/j.yofte.2021.102787

Cited by 21 publications

(4 citation statements)

References 34 publications

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“…When the energy of

and

is equal, the fiber optic interference structure has the highest contrast. The relationship between the bending radius and the resonance depth of the resonant peak has been detailed and explained in our previously published paper [ 37 , 38 , 39 ]. In Figure 3 , we present a comparison of the transmission spectra of the balloon-like structure before and after filling with ethanol.…”

Section: Sensor Fabrication Methods and Experimental Setupmentioning

confidence: 99%

Highly Sensitive Balloon-like Fiber Interferometer Based on Ethanol Coated for Temperature Measurement

Ding,

Lin,

Liu

et al. 2024

Sensors

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A highly sensitivity balloon-like fiber interferometer based on ethanol coating is presented in this paper. The Mach–Zehnder interferometer is formed by bending a single-mode fiber to a balloon-like structure and nested in the Teflon tube. Then, an ethanol solution was filled into the tube of the balloon-like fiber interferometer by the capillary effect. Due to the high sensitivity of the refractive index (RI) of ethanol solutions to temperature, when the external temperature varies, the optical path difference changes. The change in temperature can be detected by the shift in the interference spectrum. Limited by the size of the balloon-like structure, three kinds of these structures with different sensitive lengths were prepared to select the best parameters. The sensitive lengths were 10, 15 and 20 mm, respectively, and the RI detection performance of each structure in 10~26% NaCl solutions was investigated experimentally. The results show that when the sensitive length is 20 mm, the RI sensitivity of the sensor is the highest, which is 212.88 nm/RIU. Ultimately, the sensitive length filled with ethanol is 20 mm. The experimental results show that the temperature sensitivity of the structure is 1.145 nm/°C in the range of 28.1 °C~35 °C, which is 10.3 times higher than that of an unfilled balloon-like structure (0.111 nm/°C). The system has the advantages of low cost and easy fabrication, which can potentially be used in high-precision temperature monitoring processes.

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“…When the energy of

and

Section: Sensor Fabrication Methods and Experimental Setupmentioning

confidence: 99%

Highly Sensitive Balloon-like Fiber Interferometer Based on Ethanol Coated for Temperature Measurement

Ding,

Lin,

Liu

et al. 2024

Sensors

Self Cite

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“…When displacement is incrementally applied on the sensor, there is a decrease in the bending radius. Since the core is made of air, the RI will remain mostly the same during displacement increase, while the extended cladding layer will increase in effective RI and the compressed cladding layer will decrease in effective RI [1,5], as shown in Fig. 2a.…”

Section: The Proposed Fiber Sensor Has Only One Sensing Element In On...mentioning

confidence: 99%

“…Measurement of displacement is of high demand for opticalbased devices in applications where precise movement control is required such as aeronautics, microimaging, robotics and structural health monitoring [2][3][4]. The displacement fiber sensors usually adopt either a grating structure, such as Bragg gratings, long period and tilted gratings, or an interference-based principle, including multimode, Fabry-Perot, and Mach-Zehnder interferometers (MZI) [5][6][7]. Compared with interference-based fiber sensors, the gratingbased ones require complex fabrication, involving precise phase masks, UV, CO 2 or femtosecond lasers, and a bulky optical setup for grating inscription, also increasing the associated cost [4].…”

Section: The Proposed Fiber Sensor Has Only One Sensing Element In On...mentioning

confidence: 99%

Simultaneous measurement of displacement and temperature using a balloon-like hybrid fiber sensor

Santos¹,

Bierlich²,

Kobelke³

et al. 2022

Opt. Lett.

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A fiber sensor based on a silica capillary in a balloon-like shape for simultaneous measurement of displacement and temperature is proposed and experimentally demonstrated. The sensor is fabricated by splicing a segment of a hollow-core fiber between two single-mode fibers (SMF) and by creating a balloon shape with the capillary at the top-center position. The SMF–capillary–SMF configuration excites an antiresonant (AR) guidance, and the balloon shape enhances the Mach–Zehnder interferometer (MZI). Experimental results show that, for a balloon length of 4.0 cm and a capillary length of 1.2 cm, the AR is insensitive to displacement and its sensitivity to temperature is 14.3 pm/°C, while the MZI has a sensitivity to displacement of 1.68 nm/mm in the range between 0 and 5 mm and a sensitivity to temperature of 28.6 pm/°C, twice the value of the AR. The proposed fiber sensor has only one sensing element in one configuration, which makes it simple to fabricate as well as low cost.

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“…Various configurations based on optical fiber sensors have been reported in literature. Namely, for displacement fiber sensors, these usually adopt either a grating structure, such as Bragg gratings, long period and tilted gratings, or an interference-based principle, including multimode, Fabry-Perot, and Mach-Zehnder interferometers (MZI) [2][3][4]. Regarding the latter interferometer, balloon-like fiber sensors have been developed in different configurations for hybrid measurements [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Capillary based hybrid fiber sensor in a balloon-like shape for simultaneous measurement of displacement and temperature

Santos

Bierlich

Kobelke

et al. 2022

J. Phys.: Conf. Ser.

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In this work, a hybrid sensor based on a silica capillary in a balloon-like shape for simultaneous measurement of displacement and temperature is proposed for the first time, to the best of our knowledge. The sensor is fabricated by splicing a segment of a hollow core fiber between two single mode fibers (SMF) and by bending the fiber in a balloon shape with the capillary at the top-center position. In a transmission scheme, the SMF-capillary-SMF configuration excites an antiresonant (AR) guidance and the balloon shape enhances a Mach-Zehnder interferometer (MZI). The different responses of the interferometers to external displacement and temperature variations are conducive to a hybrid application of the sensor for simultaneous measurement of these parameters. Experimental results show that, for a capillary length of 1.2 cm and a balloon length of 4 cm, AR is insensitive to displacement and its sensitivity to temperature is 14.3 pm/°C, while the MZI has a sensitivity to displacement of 1.68 nm/mm and twice the sensitivity of AR to temperature, of 28.6 pm/°C. The proposed fiber sensor consists of only one sensing element in one configuration exciting two interferometers at the same time, which makes it of simple fabrication as well as low cost.

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Balloon-like angle and micro-displacement sensor based on bent single-mode fiber

Cited by 21 publications

References 34 publications

Highly Sensitive Balloon-like Fiber Interferometer Based on Ethanol Coated for Temperature Measurement

Highly Sensitive Balloon-like Fiber Interferometer Based on Ethanol Coated for Temperature Measurement

Simultaneous measurement of displacement and temperature using a balloon-like hybrid fiber sensor

Capillary based hybrid fiber sensor in a balloon-like shape for simultaneous measurement of displacement and temperature

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