Yang Lu, Lifan Li, Qiuyang Huang, Jianfei Wang, Xiaoyang Hu, Mo Chen, Zhou Meng. Reducing Crosstalk Induced by Rayleigh Backscattering Light-Waves in a Quasi-Distributed Acoustic Sensing System[J]. Acta Optica Sinica, 2024, 44(1): 0106029
- Acta Optica Sinica
- Vol. 44, Issue 1, 0106029 (2024)
Fig. 1. Schematics of qDAS system based on wFBG
Fig. 2. Experimental results of reflected light pulse sequence intensity and demodulation signal. (a) Waterfall plot of time-domain intensity; (b) distribution map of PSD along fiber array at 1 kHz
Fig. 3. Simulation results of
Fig. 4. Simulation results of
Fig. 5. Schematic diagram of frequency spectrum of interference pulse
Fig. 6. Simulation results of normalized PSD of
Fig. 7. Distribution of PSD along fiber array at 1 kHz of demodulated phase signals under condition of applying cosine phase modulation
Fig. 8. Experimental results on relationship between crosstalk value and magnitude of driving cosinusoidal electrical signal
Set citation alerts for the article
Please enter your email address
© Copyright 2018-2021 | Chinese Laser Press. All Rights Reserved 沪ICP备15018463号-20