Fiber-optic acoustic pressure sensor based on large-area nanolayer silver diaghragm

作者：Feng Xu, Jinhui Shi, Kui Gong, Hefei Li, Rongqing Hui, Benli Yu · 发表于：Optics Letters · 年份：2014 · DOI：10.1364/ol.39.002838 · 被引用次数：221 · 研究领域：Advanced Fiber Optic Sensors、Advanced Fiber Laser Technologies、Mechanical and Optical Resonators

A fiber-optic acoustic pressure sensor based on a large-area nanolayer silver diaphragm is demonstrated with a high dynamic pressure sensitivity of 160 nm/Pa at 4 kHz frequency. The sensor exhibits a noise limited detectable pressure level of 14.5 μPa/Hz(1/2). Its high dynamic pressure sensitivity and simple fabrication process make it an attractive tool for acoustic sensing and photo-acoustic spectroscopy.