Optics and Precision Engineering, Volume. 32, Issue 17, 2708(2024)
Radio-frequency heterodyne detection of fiber-optic ultrasonic sensor
Fig. 1. Optical fiber ultrasonic sensing system and demodulation method
Fig. 3. Comparison of performance of optical fiber ultrasonic sensors with two demodulation techniques
Fig. 5. Comparison of imaging results and SNR at different intestinal locations. (a), (b) are vascular structures near the anus, (e)、(f) are vascular structures about 1cm from the anus , (c) Signal strength data extracted from white boxes (a) and (b), (g) Signal strength data extracted from white boxes (c) and (f), (d) is the signal-to-noise ratio at the ordinate corresponding to points ①, ②, ③, and ④ in (c), (h) is the signal-to-noise ratio at the ordinate corresponding to ①, ②, ③, and ④ points in (g)
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Wuxing LIUFU, Yizhi LIANG, Junjie CAO, Xiaoxuan ZHONG, Jinying LI, Wei HUANG, Long JIN. Radio-frequency heterodyne detection of fiber-optic ultrasonic sensor[J]. Optics and Precision Engineering, 2024, 32(17): 2708
Category: Precision Measurement and Sensing
Received: May. 20, 2024
Accepted: --
Published Online: Nov. 18, 2024
The Author Email: LIANG Yizhi (liangyizhi88528@gmail.com)