Abstract
We demonstrate herein a novel interrogation system for an identical weak fiber Bragg grating (FBG) array based on an active mode locking laser cavity. The system can successfully and efficiently interrogate over 17 identical FBGs by detecting their mode-locked frequencies. The results confirm the large capacity (>17 identical FBGs), high interrogation speed (>5 kHz), high signal-to-noise ratio (>25 dB), and high linearity (R2 = 0.9998) of the proposed interrogator configuration.
© 2018 The Author(s)
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