Fiber optic-based laser interferometry array for three-dimensional ultrasound sensing

Highly sensitive microfiber ultrasound sensor for photoacoustic imaging

“…Fiber optic sensors 3,4 provide a compelling alternative for ultrasound detection owing to the advantages of their small size, broad bandwidth and excellent immunity to electromagnetic interference. However, the sensitivity of a traditional optical fiber ultrasonic sensor is relatively low due to the large Young's modulus of the silica fiber, thus limiting its application in weak photoacoustic signal detection.…”

Optical ultrasound sensors for photoacoustic imaging: a narrative review

“…In 1973, Thomson et al (53) firstly demonstrated an FP resonator to detect acoustic surface vibration. This kind of sensor has been gradually developed in terms of physical structure (54,55), compositive materials (56)(57)(58)(59) and new technologies (60)(61)(62)(63). FP sensors with excellent performances are suitable for photoacoustic endoscopy in medical applications (61,64).…”

Highly sensitive and miniature microfiber-based ultrasound sensor for photoacoustic tomography

“…Until now, optical fiber sensors including interferometric and non-interferometric sensors have been proposed and applied in ultrasound detection. Among these various sensors, Fabry-Pérot interferometer (FPI) 12,14,16 and Mach-Zehnder interferometer (MZI) 17−19 are extensively studied and widely utilized in ultrasound detection. High finesse fiber based FPI owns the superiorities of high sensitivity and compact structure.…”