Abstract
Radio-frequency (rf) beat frequencies between two longitudinal modes and two polarization modes of a birefringent dual-longitudinal-mode moiré distributed-feedback fiber laser are employed to measure strain and temperature simultaneously. Operating entirely in the rf domain, this approach potentially allows one to employ low-cost and precise rf measuring techniques. A strain–temperature cross sensitivity of the strain- and the thermo-optic coefficients, which can be neglected in wavelength-based grating sensors, has been observed. The achieved sensor accuracy was ±15 µ∊ and ±0.2 °C.
© 2001 Optical Society of America
Full Article | PDF ArticleMore Like This
Oliver Hadeler, Erland Rønnekleiv, Morten Ibsen, and Richard I. Laming
Appl. Opt. 38(10) 1953-1958 (1999)
Yan-Nan Tan, Yang Zhang, Long Jin, and Bai-Ou Guan
Opt. Express 19(21) 20650-20656 (2011)
Liang Gao, Lin Chen, Long Huang, and Xiangfei Chen
Opt. Express 20(20) 22517-22522 (2012)