Bending Sensing Rules for Long-Period Fiber Gratings

Hongxia, 赵洪霞 Zhao; Jilong, 鲍吉龙 Bao; Ying, 陈莹 Chen

doi:10.3788/aos20082809.1681

Cited by 4 publications

(2 citation statements)

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“…The basic structural principle is shown in figure 1. The mathematical model of the central wavelength offset ∆λ B and the deflection at the grating y a can be established as below [11]:…”

Section: Fbg Bending Perception Principlesmentioning

confidence: 99%

Fiber Bragg grating-based biomimetic whisker for shape and texture recognition

2018

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This paper introduces a novel shape and texture recognizing technique based on the design of bionic whisker. Whisker arrays are installed on both sides of the robot. In the experiment, the whisker sweeps around to detect the unidentified object. The center wavelength of fiber Bragg grating (FBG) pasted on the whisker shifts when the whisker touches the obstacle. Shape recognition is realized by processing and further calculating the wavelength shift data. At the same time, the whisker sweeps over the surface texture, and the texture information is obtained by processing the wavelength shift data with the time-frequency analysis method. The results show that the whisker sensor can identify the three-dimensional profile shapes of contacted objects and the texture features of touched surfaces effectively. K: Data analysis; Detector design and construction technologies and materials 1Corresponding author.

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Section: Fbg Bending Perception Principlesmentioning

confidence: 99%

Fiber Bragg grating-based biomimetic whisker for shape and texture recognition

2018

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“…Since long-period fiber gratings (LPFGs) were successfully written into a glass fiber by Vengsarkar et al in 1995 [1], the researches on fiber optical sensing of LPFGs [2][3][4][5] have gained a strong interest among the researchers. A LPFG couples the fundamental core mode of an optical fiber to its co-propagating cladding modes.…”

Section: Introductionmentioning

confidence: 99%

A Demodulation Scheme for High-Sensitivity Temperature Sensing Based on Long Period Fiber Grating

Zhao

Wei

Ding

2011

AMR

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Long Period Fiber Grating (LPFG) sensors have wide range of potential applications; low-cost and high-sensitivity demodulation technology is the key of its practical applications. In this paper, an interferometer is comprised of an all-fiber loop mirror and two identical LPFGs, a tunable F-P filter is used to perform wavelength scanning one of the interference peaks, two negative pulse interval formed by signal light in the drive signal period are measured by means of detector and oscilloscope to realize signal demodulation. This demodulation system was used to detect the temperature parameter. The results showed that the sensing sensitivity of this system was demonstrated to be 0.08349 ms/°C, experimentally, which was 2.3 times higher than a single LPFG using the same demodulation technology.

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Characteristics of dual-peak resonance in a tilted long-period fiber grating sensing film sensor

Sang

Ling

2017

J. Opt. Soc. Am. B

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Bending Sensing Rules for Long-Period Fiber Gratings

Cited by 4 publications

References 0 publications

Fiber Bragg grating-based biomimetic whisker for shape and texture recognition

Fiber Bragg grating-based biomimetic whisker for shape and texture recognition

A Demodulation Scheme for High-Sensitivity Temperature Sensing Based on Long Period Fiber Grating

Characteristics of dual-peak resonance in a tilted long-period fiber grating sensing film sensor

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