Liquid level sensor based on fiber ring laser with single-mode-offset coreless-single-mode fiber structure

Wang, Zixiao; Zhang, Tan; Xing, Rui; Liang, Linjun; Qi, Yanhui; Jian, Shuisheng

doi:10.1016/j.optlastec.2016.05.001

Cited by 20 publications

(3 citation statements)

References 22 publications

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“…Two years later, knowing the difficulties in fabricating liquid level sensors based on optical fiber, Wang et al [ 44 ] presented an easy-making and low-cost reflective liquid level sensor based on FRL with a single-mode-offset coreless-single-mode (SOCS) fiber structure. The ending-reflecting structure simplified the fabrication process of this sensor.…”

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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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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“…In the last decades, several research groups have employed different optical fiber structures as sensing heads in fiber laser sensors: tapers [27], multimode interference filters [28], and all fiber interferometers [29][30][31][32]; these elements improve the possibility of tuning a lasing mode. As a consequence, multiple parameters have been detected using fiber laser sensors: refractive index [33,34], curvature [35,36], strain [37][38][39], temperature [40][41][42][43][44], magnetic field [45,46], liquid level [27,47], torsion [48], rotation [49], gas concentration [29,50], gas pressure [51,52], relative humidity [32,53], and ultrasound [54].…”

Section: Introductionmentioning

confidence: 99%

Fiber Laser Sensor Configurations for Refractive Index, Temperature and Strain: A Review

et al. 2023

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Fiber laser sensors have been present for almost four decades as versatile sensing devices with a simple demodulation process, high sensitivity, and competitive resolution. This work discusses the most representative fiber laser sensor configurations employed for detecting critical parameters such as temperature, refractive index, and strain. However, essential information about other interesting parameters that have been measured is considered in this manuscript. Concurrently, the sensing elements and principle operation are described. Furthermore, these configurations are analyzed in terms of their principle of operation, sensitivity, gain medium, and wavelength operation range. According to the literature reviewed, fiber laser sensors offer the possibility of new interrogation techniques and simultaneous, independent detection. Considering interferometric fiber sensors, the fiber laser sensors offer high brightness, good output power, and high resolution. As a result, it is demonstrated that fiber laser sensors are a robust alternative for multiple sensing applications.

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“…FBGs are typically unsensitive to the presence of a surrounding liquid, because the light is usually confined to the core of the fiber. However, fibers can be made sensitive to the presence of a liquid, for example, by using long-period gratings (LPGs) [ 6 , 7 ], laterally-etched FBGs [ 8 ], tilted FBGs [ 9 ], coreless fibers [ 10 , 11 ], etc. On the other hand, the presence of a liquid can be indirectly estimated by measuring a different magnitude, for example, Diaz et al [ 12 ] used an FBG on a diaphragm to measure the hydrostatic pressure and calculate the liquid level.…”

Section: Introductionmentioning

confidence: 99%

Fiber-Optic Liquid Level Sensing by Temperature Profiling with an FBG Array

Barone

Signorini

Ntibarikure

et al. 2018

Sensors

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We describe a fiber-optic system to measure the liquid level inside a container. The technique is based on the extraction of the temperature profile of the fiber by using a fiber Bragg grating (FBG) array. When the temperatures of the liquid and the gas are different, the liquid level can be estimated. We present a physical model of the system and the experimental results and we compare different algorithms to extract the liquid level from the temperature profile. We also show how air convection influences the temperature profile and the level of estimation accuracy. We finally show dynamic response measurements which are used to obtain the response time of the sensor. Turbomachinery monitoring is proposed as one possible application of the device.

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Liquid level sensor based on fiber ring laser with single-mode-offset coreless-single-mode fiber structure

Cited by 20 publications

References 22 publications

Optical Fiber Sensors Based on Fiber Ring Laser Demodulation Technology

Optical Fiber Sensors Based on Fiber Ring Laser Demodulation Technology

Fiber Laser Sensor Configurations for Refractive Index, Temperature and Strain: A Review

Fiber-Optic Liquid Level Sensing by Temperature Profiling with an FBG Array

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