Temperature insensitive fiber optical displacement sensors based on double fiber Bragg gratings

Ming Jiang; Liuzhu Cui; Rong Liu

doi:10.1002/mop.28052

Temperature insensitive fiber optical displacement sensors based on double fiber Bragg gratings

Ming Jiang^*, Liuzhu Cui, Rong Liu

^*Corresponding author for this work

School of Automation

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

A temperature insensitive fiber optical displacement sensor based on double Bragg gratings is presented and experimentally demonstrated. The sensor is constructed by a trapezoid slid block and two isosceles cantilevered beams, and two fiber Bragg gratings (FBG) that are glued on the two beams. The displacement can be measured by interrogating the wavelength difference of the two FBGs, and the temperature dependence is greatly reduced. Experimental results show that a displacement sensitivity of 120 pm/mm and a temperature dependence of 2.1 pm/°C are achieved.

Original language	English
Pages (from-to)	304-306
Number of pages	3
Journal	Microwave and Optical Technology Letters
Volume	56
Issue number	2
DOIs	https://doi.org/10.1002/mop.28052
Publication status	Published - Feb 2014

Keywords

displacement
fiber Bragg grating
fiber optical sensor

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10.1002/mop.28052

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abstract = "A temperature insensitive fiber optical displacement sensor based on double Bragg gratings is presented and experimentally demonstrated. The sensor is constructed by a trapezoid slid block and two isosceles cantilevered beams, and two fiber Bragg gratings (FBG) that are glued on the two beams. The displacement can be measured by interrogating the wavelength difference of the two FBGs, and the temperature dependence is greatly reduced. Experimental results show that a displacement sensitivity of 120 pm/mm and a temperature dependence of 2.1 pm/°C are achieved.",

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AU - Jiang, Ming

AU - Cui, Liuzhu

AU - Liu, Rong

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N2 - A temperature insensitive fiber optical displacement sensor based on double Bragg gratings is presented and experimentally demonstrated. The sensor is constructed by a trapezoid slid block and two isosceles cantilevered beams, and two fiber Bragg gratings (FBG) that are glued on the two beams. The displacement can be measured by interrogating the wavelength difference of the two FBGs, and the temperature dependence is greatly reduced. Experimental results show that a displacement sensitivity of 120 pm/mm and a temperature dependence of 2.1 pm/°C are achieved.

AB - A temperature insensitive fiber optical displacement sensor based on double Bragg gratings is presented and experimentally demonstrated. The sensor is constructed by a trapezoid slid block and two isosceles cantilevered beams, and two fiber Bragg gratings (FBG) that are glued on the two beams. The displacement can be measured by interrogating the wavelength difference of the two FBGs, and the temperature dependence is greatly reduced. Experimental results show that a displacement sensitivity of 120 pm/mm and a temperature dependence of 2.1 pm/°C are achieved.

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KW - fiber Bragg grating

KW - fiber optical sensor

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Temperature insensitive fiber optical displacement sensors based on double fiber Bragg gratings

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Keywords

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