Ultrasonic signal detection based on Fabry–Perot cavity sensor

Visual Computing for Industry, Biomedicine, and Art

Wu Yang¹  Wei Song¹  Jiaqi Zeng¹  Chonglei Zhang¹ 

[1] Nanophotonics Research Center, Shenzhen University, 518000, Shenzhen, China;

关键词: Fabry–Perot microcavity;    Double-clad fiber;    Acoustic sensor;    Endoscopic photoacoustic imaging;    Two-photon 3D lithography machine;    Full-optical detection;   

DOI  :  10.1186/s42492-021-00074-0

来源: Springer

【 摘 要 】

Acoustic/ultrasonic sensors are devices that can convert mechanical energy into electrical signals. The Fabry–Perot cavity is processed on the end face of the double-clad fiber by a two-photon three-dimensional lithography machine. In this study, the outer diameter of the core cladding was 250 μm, the diameter of the core was 9 μm, and the microcavity sensing unit was only 30 μm. It could measure ultrasonic signals with high precision. The characteristics of the proposed ultrasonic sensor were investigated, and its feasibility was proven through experiments. Its design has a small size and can replace a larger ultrasonic detector device for photoacoustic signal detection. The sensor is applicable to the field of biomedical information technology, including medical diagnosis, photoacoustic endoscopy, and photoacoustic imaging.

【 授权许可】

CC BY