期刊
JOURNAL OF LIGHTWAVE TECHNOLOGY
卷 37, 期 18, 页码 4770-4775出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JLT.2019.2919765
关键词
Fiber Bragg gratings (FBGs); fiber sensors; high-volume manufacturing services; silicon on insulator; silicon photonics; waveguides; wavelength division multiplexing; wavelength meters
资金
- Regione Toscana PAR FAS
- Regione Toscana POR FESR
- EU FP7 Project IRIS [619194]
A wavelength division multiplexed fiber Bragg grating (FBG) sensor interrogator using an integrated unbalanced Mach-Zehnder interferometer followed by an arrayed waveguide grating on silicon-on-insulator platform is presented. The Bragg wavelength shift is determined through the phase-generated carrier demodulation technique, allowing accurate dynamic FBG interrogation. The performance of the proposed device was validated by comparing the measurements with a commercial FBG readout unit based on a spectrometer, serving as a reference. Experimental results demonstrate a dynamic strain resolution of 4.56 n epsilon/root Hz and minimum detectable strain down to similar to 0.49 mu epsilon at 1-kHz bandwidth.
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