2005
DOI: 10.1109/lpt.2005.857985
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Temperature-insensitive fiber Bragg grating liquid-level sensor based on bending cantilever beam

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Cited by 109 publications
(15 citation statements)
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“…Consequently, when the displacement increases, a dramatically weakened ghost resonance results as shown in figure 4. Compared to the same BCB but with a straight FBG [16], the ghost resonance in a TFBG shows improved sensitivity to displacement due to the double effects of the non-uniform strain-gradient and modulated internal tilt angle. Meanwhile, as TFBG works on transmission, it takes advantage of a higher power working level compared to a reflection-based FBG and shows a much larger dynamic response range in power-referenced displacement measurement, as shown in figure 7.…”
Section: Sensing Principlementioning
confidence: 99%
“…Consequently, when the displacement increases, a dramatically weakened ghost resonance results as shown in figure 4. Compared to the same BCB but with a straight FBG [16], the ghost resonance in a TFBG shows improved sensitivity to displacement due to the double effects of the non-uniform strain-gradient and modulated internal tilt angle. Meanwhile, as TFBG works on transmission, it takes advantage of a higher power working level compared to a reflection-based FBG and shows a much larger dynamic response range in power-referenced displacement measurement, as shown in figure 7.…”
Section: Sensing Principlementioning
confidence: 99%
“…In environments that require ultra-high liquid level sensitivity like medical testing, the common capacitance, resistance, magnetostriction, and ultrasonic sensors have various defects and cannot meet the requirements of liquid level measurement [13] . In recent years, various optical fiber liquid level sensors were proposed, such as fiber Bragg gratings (FBGs) [14,15] , long period fiber gratings (LPFGs) [16,17] , Michelson interferometers (MIs) [18] , and Mach-Zehnder interferometers (MZIs) [19,20] . Especially, the sensor based on a multimode fiber (MMF) structure has attracted more and more attention because of its advantages such as simple structure, low cost, and convenient manufacture.…”
Section: Introductionmentioning
confidence: 99%
“…Optical fiber sensors have been widely applied in the field of sensing, due to their small size, high sensitivity, electromagnetic immunity, corrosion resistance, and capacity forremote sensing. In recent decades, various types of optical fiber sensors have been developed, such as fiber gratings [1,2], fiber interferometers [3,4], and micro-cavities [5,6]. Of these, in-line fiber interferometers have received great attention by virtue of their simple all -fiber structure, ease of implementation, and high sensitivity.…”
Section: Introductionmentioning
confidence: 99%