Fiber Bragg grating temperature sensor with controllable sensitivity.
We demonstrate a fiber Bragg grating (FBG) sensor with controllable sensitivity by connecting two metal strips that have different temperature-expansion coefficients. By changing the lengths of the metal strips we successfully controlled and improved the temperature sensitivity to 3.3 times of that of bare FBG.
Jung
J
J
School of Electrical Engineering, Seoul National University, Kwanak-Gu Shinlim-Dong, Seoul 151-742, Korea.
Nam
H
H
Lee
B
B
Byun
J O
JO
Kim
N S
NS