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Multiplexed MoirÉ Long Period Grating Temperature Sensors

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3 Author(s)
Childs, P. ; Dept. of Electron. Eng., Tsinghua Univ., Beijing ; Kan Gao ; Gang-Ding Peng

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.

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Lightwave Technology, Journal of  (Volume:26 ,  Issue: 17 )