Title :
Multiplexed MoirÉ Long Period Grating Temperature Sensors
Author :
Childs, Paul ; Gao, Kan ; Peng, Gang-Ding
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing
Abstract :
Spectrally overlapping long period gratings (LPGs) are demultiplexed for the first time using a Moire grating structure so as to encode spectral differences between all of the gratings. Results of performing thermal tests showed that the system noise was 1.2 K and the crosstalk between two sensors was below a correlation level of 0.1 K.
Keywords :
diffraction gratings; fibre optic sensors; temperature sensors; Moire grating; multiplexed moire long period grating; temperature sensors; thermal tests; Bragg gratings; Crosstalk; Fiber gratings; Optical fiber sensors; Optical fiber testing; Optical propagation; Resonance; Sensor systems; Temperature sensors; Wavelength division multiplexing; Harmonic analysis; MoirÉ gratings; long period grating (LPG); optical fiber sensors;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2008.923268
