27 February 2018 Simultaneous bending-curvature and temperature measurements based on a fiber Bragg grating and a Mach–Zehnder interferometer
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Abstract
A design for simultaneous bending-curvature and temperature measurement using a fiber Bragg grating (FBG) inserted between two peanut-shaped structures is presented. The peanut-shaped structure is fabricated in the single-mode fiber by a fusion splicer and then connected with another peanut-shaped structure to form a Mach–Zehnder interferometer (MZI). By measuring the wavelength variation of the MZI and FBG in the spectral response of this configuration, simultaneous bending-curvature and temperature measurement is obtained. The experiment results show that curvature sensitivity is −27.58  nm  /  m  ?  1 and FBG is 0.03869 and 0.01217  nm  /    °  C.
© 2018 Society of Photo-Optical Instrumentation Engineers (SPIE)
Jun Huang, Jun Huang, Shenneng Huang, Shenneng Huang, Changyu Shen, Changyu Shen, Yongxing Jin, Yongxing Jin, } "Simultaneous bending-curvature and temperature measurements based on a fiber Bragg grating and a Mach–Zehnder interferometer," Optical Engineering 57(2), 020501 (27 February 2018). https://doi.org/10.1117/1.OE.57.2.020501 . Submission: Received: 27 December 2017; Accepted: 13 February 2018
Received: 27 December 2017; Accepted: 13 February 2018; Published: 27 February 2018
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