800nm FBG sensing interrogation system based on tilted FBG
Bo Liu , Rui Suo , Kai-ming Zhou , Long Jin , Jian Zhang , Yan-ge Liu , Gui-yun Kai , Xiao-yi Dong
Optoelectronics Letters ›› 2007, Vol. 3 ›› Issue (1) : 62 -64.
800nm FBG sensing interrogation system based on tilted FBG
An 800 nm band fiber Bragg grating sensing interrogation system using tilted FBG as the core wavelength division component is presented. A charge coupled device (CCD) linear array is put on the focal plane of the lens to detect the light. TFBG is used to tap light out of the fiber core to fiber cladding. The sensing wavelength is 795 to 830 nm, with accuracy of 20 pm and scan speed 100Hz. Using FBG sensor, we achieve the temperature sensitivity of 1.8 °C and strain sensitivity of 18 μ ɛ.
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K. Zhou, Aston University, UK., Unpublished work |
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