title: Optical fiber strain sensor using fiber resonator based on frequency comb Vernier spectroscopy.
abstract: A novel (to our best knowledge) optical fiber strain sensor using a fiber ring resonator based on frequency comb Vernier spectroscopy is proposed and demonstrated. A passively mode-locked optical fiber laser is employed to generate a phased-locked frequency comb. Strain applied to the optical fiber of the fiber ring resonator can be measured with the transmission spectrum. A good linearity is obtained between displacement and the inverse of wavelength spacing with an R(2) of 0.9989, and high sensitivities better than 40 pm/με within the range of 0 to 10 με are achieved. The sensitivity can be proportionally improved by increasing the length of the optical fiber ring resonator.
authors: Wuhan National Laboratory for Optoelectronics, School of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
authors: Liang
authors: L
authors: Zhang
authors: Ping
authors: P
authors: Lu
authors: Li
authors: L
authors: Chen
authors: Chaoran
authors: C
authors: Huang
authors: Deming
authors: D
authors: Liu
authors: Shibin
authors: S
authors: Jiang