Fiber optic Fabry-Perot sensor for surface tension analysis

Marquez-Cruz, Violeta; Hernández‐Cordero, Juan

doi:10.1364/oe.22.003028

Cited by 23 publications

(11 citation statements)

References 16 publications

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“…Further, different techniques have been used to measure the CA of a liquid by immersing an optical fiber in a sample of the liquid. For example, Zhou et al [14] and Márquez-Cruz et al [15] have measured the dynamic and the static CA, respectively, using a fiber probe when it was (vertically) immersed in the test liquid. Shen et al [16], and Liu et al [17] have described an alternative technique where a tilted fiber Bragg grating was immersed horizontally into the liquid.…”

Section: Introductionmentioning

confidence: 99%

Monitoring of the Critical Meniscus of Very Low Liquid Volumes Using an Optical Fiber Sensor

et al. 2020

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A novel sensing system based on single mode optical fiber in reflective configuration has been developed to measure the critical meniscus height (CMH) of low volumes of liquids, which is then used to calculate the contact angle. The sensing system has been designed especially for very low volumes of liquids (e.g. bioliquids) and the work has demonstrated that measurements are possible with a minimum liquid volume of 5 µL. The sensing system is based on monitoring the spectral variation induced by the difference in the refractive index regions surrounding the fiber tip, at the air-liquid or liquid-liquid interfaces. From the experiments performed in water, (by immersing and extracting the fiber sensor in the liquid sample), it can be concluded that the CMH forming on the fiber decreases as the temperature increases. The change of temperature (in this experiment from 22 to 60 ℃) does not influence the CMH of the sample used in the evaluation (P3 mineral oil), giving an indication of its thermal stability. In addition, a fixed fiber was used to measure the variation in the liquid level when another fiber is immersed in the liquid. The error in the liquid level obtained in the work was small, at 0.34 ± 0.04 %. Such a sensor, allowing accurate measurements with very small quantities is especially useful where liquid sample volumes are limited e.g. biologically sourced liquids or specialized, expensive industrial material in the liquid phase.

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Section: Introductionmentioning

confidence: 99%

Monitoring of the Critical Meniscus of Very Low Liquid Volumes Using an Optical Fiber Sensor

et al. 2020

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“…Recently, a paradigm change occurred when optical structures, whose response depends non-trivially on the surface tension, were used to measure the surface tension of liquids. For example, the transmissivity/reflectivity of in-fiber Fabry–Perot (FP) cavities have been associated with the interfacial surface properties of liquids involved in the architecture [ 13 , 14 ]. In the first of these approaches [ 13 ], the FP cavity is formed by a remnant pendant drop that attaches to the end facet of an optical fiber after the fiber was previously immersed into the liquid and then extracted from it.…”

Section: Introductionmentioning

confidence: 99%

“…For example, the transmissivity/reflectivity of in-fiber Fabry–Perot (FP) cavities have been associated with the interfacial surface properties of liquids involved in the architecture [ 13 , 14 ]. In the first of these approaches [ 13 ], the FP cavity is formed by a remnant pendant drop that attaches to the end facet of an optical fiber after the fiber was previously immersed into the liquid and then extracted from it. In this case, the shape of the pendant droplet, and thus the thickness of the FP, depends on the particularities of the wetting process for the specific liquid used.…”

Section: Introductionmentioning

confidence: 99%

All-Fiber Measurement of Surface Tension Using a Two-Hole Fiber

Guzmán-Sepúlveda

May-Arrioja

Fuentes-Fuentes

et al. 2020

Sensors

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An all-fiber approach is presented to measure surface tension. The experimental realization relies on the use of a specialty fiber, a so-called two-hole fiber (THF), which serves a two-fold purpose: providing a capillary channel to produce bubbles while having the means to measure the power reflected at the end facet of the fiber core. We demonstrate that provided a controlled injection of gas into the hollow channels of the THF, surface tension measurements are possible by simply tracking the Fresnel reflection at the distal end of the THF. Our results show that the characteristic times involved in the bubble formation process, from where the surface tension of the liquids under test is retrieved, can be measured from the train of pulses generated by the continuous formation and detachment of bubbles.

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“…Due to their small size and strong anti-interference ability, Fabry–Perot (F–P) sensors have become one of the most promising fiber-optic sensors [3,4,5]. Moreover, their applications have been found in a broad range of areas, including industry [6,7], aerospace [8], and national defense [9,10]. More importantly, they have a rather high resolution, which is the most prominent feature of the F–P sensors.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Fiber Optic Sensor, Based on the Fabry–Perot Interference, Assisted with Fluorescent Material for the Simultaneous Measurement of Temperature and Pressure

Jiang

Lin

Huang

et al. 2019

Sensors

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Herein we design a fiber sensor able to simultaneously measure the temperature and the pressure under harsh conditions, such as strong electromagnetic interference and high pressure. It is built on the basis of the fiber-optic Fabry–Perot (F–P) interference and the temperature sensitive mechanism of fluorescent materials. Both halogen lamps and light-emitting diodes (LED) are employed as the excitation light source. The reflected light from the sensor contains the low coherent information of interference cavity and the fluorescent lifetime. This information is independent due to the separate optical path and the different demodulation device. It delivers the messages of pressure and temperature, respectively. It is demonstrated that the sensor achieved pressure measurement at the range of 120–400 KPa at room temperature with a sensitivity of 1.5 nm/KPa. Moreover, the linearity of pressure against the cavity length variation was over 99.9%. In the meantime, a temperature measurement in the range of 25–80 °C, with a sensitivity of 0.0048 ms/°C, was obtained. These experimental results evince that this kind of sensor has a simple configuration, low-cost, and easy fabrication. As such, it can be particularly applied to many fields.

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Fiber optic Fabry-Perot sensor for surface tension analysis

Cited by 23 publications

References 16 publications

Monitoring of the Critical Meniscus of Very Low Liquid Volumes Using an Optical Fiber Sensor

Monitoring of the Critical Meniscus of Very Low Liquid Volumes Using an Optical Fiber Sensor

All-Fiber Measurement of Surface Tension Using a Two-Hole Fiber

Hybrid Fiber Optic Sensor, Based on the Fabry–Perot Interference, Assisted with Fluorescent Material for the Simultaneous Measurement of Temperature and Pressure

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