A highly sensitive optical fiber strain sensor based on cascaded multimode fiber and photonic crystal fiber

Yang, Fan; Wang, Z.K.; Wang, D.N.

doi:10.1016/j.yofte.2018.11.029

Cited by 27 publications

(7 citation statements)

References 21 publications

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“…A temperature sensitivity of 0.0123 nm/ • C and a curvature sensitivity of −5.05 dB/m −1 have been obtained [25]. Another multimode-interference-based fiber sensor consisting of cascaded MMF and photonic crystal fiber (PCF) fusion spliced with two sections of SMF was demonstrated by Yang et al, which has obtained a strain sensitivity of −14.89 pm/μ and a temperature sensitivity of −243.8 pm/ • C [26].…”

Section: Introductionmentioning

confidence: 99%

Optical Fiber Sensor for Temperature and Strain Measurement Based on Multimode Interference and Square-Core Fiber

et al. 2021

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A variety of specialty fibers such as no-core fiber (NCF) have already been studied to reveal their sensing abilities. In this work, we investigate a specialty fiber, square-core fiber, for temperature and strain sensing. A simple single-mode–multimode–single-mode (SMS) fiber sensor was fabricated, consisting of a 30-cm-long square-core fiber. The experimental results indicate that the maximal wavelength-temperature and wavelength-strain sensitivities are −15.3 pm/∘C and −1.5 pm/με, respectively, while the maximal power-temperature and power-strain sensitivities are 0.0896 dBm/∘C and 0.0756 dBm/με. Analysis of the results suggests that the fiber sensor has the potential to be used as a high-sensitivity temperature sensor with a low strain sensitivity.

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Section: Introductionmentioning

confidence: 99%

Optical Fiber Sensor for Temperature and Strain Measurement Based on Multimode Interference and Square-Core Fiber

et al. 2021

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“…13,14) Nowadays, various strain sensors based on all-fiber PCF-MZIs have been reported, including tapered PCF forms, [15][16][17] modified PCF with femtosecond laser pulses, 14) films coated 7) and partially filled PCF interferometer, 18) cascaded structure with different fibers. [19][20][21] Among them, the tapered structure introduced up-tapered joints, 15) S-tapered 16) and waist-enlarged tapers 22) in the device design. These structures were helpful to enhance the higher-order mode coupling and strain sensitivity, but increased the complexity of fabrication and induced the mechanical strength of the device.…”

Section: Introductionmentioning

confidence: 99%

Highly sensitive strain sensor based on PCF-based fiber-inline Mach–Zehnder interferometer

Li¹,

Dong²,

liao³

et al. 2022

Jpn. J. Appl. Phys.

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A highly sensitive strain sensor based on a photonic crystal fiber (PCF) Mach-Zehnder interferometer (MZI) was proposed. The MZI was formed by splicing two sections of no-core fibers (NCFs) with a piece of PCF between two single mode fibers (SMFs). The sensor has exhibited a high fringe visibility of up to 22 dB in air and a high strain sensitivity of 2.09 pm/με in the range of 0~2973 με. The strain characteristics of the sensor with different length of PCF were also investigated. Moreover, a wavelength hysteresis of less than 0.2 nm and a temperature sensitivity of 11.28 pm/℃ were measured. Additionally, the sensor has advantages of easy fabrication, larger strain measurement, high extinction ratio, and high resolution, which shows great potential in the field of strain measurement.

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“…In recent years, all‐fiber sensors have attracted everyone's attention in daily life due to their compact structure, small size, light weight, high sensitivity, immunity to electromagnetic interference, low cost, and so on. At the same time, they have been widely used in various sensing fields, including temperature, 1‐3 refractive index, 4,5 pressure, 6,7 humidity, 8,9 and strain 10,11 . Many fiber structures have been proposed and used in the sensing field.…”

Section: Introductionmentioning

confidence: 99%

“…At the same time, they have been widely used in various sensing fields, including temperature, [1][2][3] refractive index, 4,5 pressure, 6,7 humidity, 8,9 and strain. 10,11 Many fiber structures have been proposed and used in the sensing field. The most typical are long-period fiber gratings, fiber Bragg gratings, and fiber interferometers, including Mach-Zehnder interferometer, Fabry-Perot interferometer, Michelson interferometer, and Sagnac interferometer.…”

Section: Introductionmentioning

confidence: 99%

Optical fiber temperature sensor with insensitive refractive index and strain based on phase demodulation

Nan

Liu

et al. 2020

Micro & Optical Tech Letters

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We propose and experimentally demonstrate a temperature sensor based on a suspended-core microstructure optical fiber (SCMF). The sensor is constructed by fusion splicing a piece of SCMF between two up-tapers which act as light beam couplers. The Mach-Zehnder interference (MZI) is formed by the silica core modes and the air cladding modes in the SCMF. The sensitivity of −0.011 rad/ C in the temperature range of 20 C to 90 C is achieved, which is more accurate and stable than conventional wavelength tracking method due to the phase demodulation method can avoid the effects of spectral noise, dip selection, and wavelength sampling rate on the wavelength tracking. In addition, our proposed sensor is inert to external environments such as strain and refractive index, which can well solve the problem of crosstalk during temperature sensing.

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A highly sensitive optical fiber strain sensor based on cascaded multimode fiber and photonic crystal fiber

Cited by 27 publications

References 21 publications

Optical Fiber Sensor for Temperature and Strain Measurement Based on Multimode Interference and Square-Core Fiber

Optical Fiber Sensor for Temperature and Strain Measurement Based on Multimode Interference and Square-Core Fiber

Highly sensitive strain sensor based on PCF-based fiber-inline Mach–Zehnder interferometer

Optical fiber temperature sensor with insensitive refractive index and strain based on phase demodulation

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