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WENHUA WANG1,2, QINGXU YU1,* , XINSHENG JIANG3
Optical fiber sensors for ultrasonic signals detection have become a research focus in the past years. In this paper, a novel structure of the diaphragm based extrinsic Fabry-Pérot interferometric (DEFPI) optical fiber ultrasonic sensor with a through vent hole of the fused silica ferrule was present. In this sensor system, the amplified spontaneous emission ASE optical source and the Fabry-Pérot filter are used to adjust the wavelength of the operation point of the sensor. We performed the ultrasonic distance detection experiment from 1 cm to 31 cm and the sensor sensitivity experiment, and the pressure sensitivity of the sensor is 9.68 nm/kPa (66.69 nm/psi) The sensitivity of the fusion silica structure DEFPI optical fiber is much higher than that of the HCPCF ILFP (hollow core photonic crystal fiber in line fiber optic Fabry Pérot) and the fiber Bragg grating (FBG)..
Optical fiber sensors, Ultrasonic sensor, Extrinsic Fabry-Pérot interferometer, Diaphragm.
WENHUA WANG, QINGXU YU, XINSHENG JIANG, High sensitivity d iaphragm based extrinsic Fabry-Pérot interferometric optical fiber underwater ultrasonic sensor, Optoelectronics and Advanced Materials - Rapid Communications, 6, 7-8, July-August 2012, pp.697-702 (2012).
Submitted at: Feb. 4, 2012
Accepted at: July 19, 2012
Optoelectronics and Advanced Materials - Rapid Communications
(2022): 0.5 - 2022 Journal Citation Reports (Clarivate Analytics, 2023)
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