High-sensitivity, high-frequency extrinsic Fabry-Perot interferometric fiber-tip sensor based on a thin silver diaphragm

Optics Letters
Fawen GuoJinsong Huang

Abstract

We propose and demonstrate a fiber-tip sensor based on an ultra-thin silver diaphragm for highly sensitive and high frequency ultrasonic detection. The diaphragm is prepared by the vacuum thermal deposition method and then transferred to the fiber tip. The sensor demonstrated in this letter has a 300 nm thick diaphragm with an inner diameter of 75 μm, leading to a static pressure sensitivity of 1.6 nm/kPa and a resonant frequency of 1.44 MHz. This sensor has potential applications in many fields such as structural health monitoring and medical ultrasonography.

References

Jun 10, 2005·Applied Optics·Edvard Cibula, Denis Donlagić
Sep 1, 2005·Optics Letters·Denis Donlagic, Edvard Cibula
Apr 8, 2006·Optics Letters·Xingwei WangAnbo Wang

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Citations

May 3, 2018·Optics Express·Zhihua ShaoXueguang Qiao
Nov 30, 2019·The Review of Scientific Instruments·Jun TangJun Liu
Oct 18, 2016·Advanced Materials·Feifan YuRuitao Lv
Nov 10, 2016·Applied Optics·Philip G Westergaard, Mikael Lassen
Nov 2, 2019·Optics Letters·Jingcheng ZhouXingwei Wang

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