Flatness of planar Fabry-Pérot cavities: a critical parameter for high sensitivity sensors for photoacoustic imaging (Conference Presentation)

2020 ◽  
Author(s):  
Dylan Marques ◽  
James A. Guggenheim ◽  
Rehman Ansari ◽  
Edward Z. Zhang ◽  
Paul C. Beard ◽  
...  
Keyword(s):  
Critical Parameter ◽  
Photoacoustic Imaging ◽  
High Sensitivity ◽  
Fabry Perot

High-sensitivity fiber-optic Fabry-Perot transverse load sensor based on bubble microcavity

2022 ◽  
pp. 113375
Author(s):  
Xiaoli Zhang ◽  
Xinlei Zhou ◽  
Shuo Wang ◽  
Pengcheng Tao ◽  
Fengxiang Ma ◽  
...  
Keyword(s):  
Fiber Optic ◽  
High Sensitivity ◽  
Transverse Load ◽  
Fabry Perot ◽  
Load Sensor

High sensitivity, low temperature-crosstalk strain sensor based on a microsphere embedded Fabry–Perot interferometer

2020 ◽  
Vol 310 ◽  
pp. 112048
Author(s):  
Ke Tian ◽  
Meng Zhang ◽  
Jibo Yu ◽  
Yuxuan Jiang ◽  
Haiyan Zhao ◽  
...  
Keyword(s):  
Low Temperature ◽  
Strain Sensor ◽  
High Sensitivity ◽  
Fabry Perot

scholarly journals An all-Optical Photoacoustic Sensor for the Detection of Trace Gas

Sensors ◽  
2020 ◽  
Vol 20 (14) ◽  
pp. 3967
Author(s):  
Thomas Lauwers ◽  
Alain Glière ◽  
Skandar Basrour
Keyword(s):  
High Sensitivity ◽  
Element Model ◽  
Remote Detection ◽  
Trace Gas ◽  
Lumped Element ◽  
Highly Sensitive ◽  
Fabry Perot ◽  
All Optical ◽  
Lumped Element Model ◽  
Acoustic Sensitivity

A highly sensitive Fabry–Perot based transduction method is proposed as an all-optical alternative for the detection of trace gas by the photoacoustic spectroscopy technique. A lumped element model is firstly devised to help design the whole system and is successfully compared to finite element method simulations. The fabricated Fabry–Perot microphone consists in a hinged cantilever based diaphragm, processed by laser cutting, and directly assembled at the tip of an optical fiber. We find a high acoustic sensitivity of 630 mV/Pa and a state-of-the-art noise equivalent pressure, as low as ~   2   μ Pa / Hz at resonance. For photoacoustic trace gas detection, the Fabry–Perot microphone is further embedded in a cylindrical multipass cell and shows an ultimate detection limit of 15 ppb of NO in nitrogen. The proposed optical trace gas sensor offers the advantages of high sensitivity and easy assembling, as well as the possibility of remote detection.

High-Sensitivity Gas Pressure Fabry–Perot Fiber Probe With Micro-Channel Based on Vernier Effect

2019 ◽  
Vol 37 (14) ◽  
pp. 3444-3451 ◽  
Author(s):  
Zhe Li ◽  
Yan-Xin Zhang ◽  
Wei-Gang Zhang ◽  
Ling-Xin Kong ◽  
Tie-Yi Yan ◽  
...  
Keyword(s):  
High Sensitivity ◽  
Gas Pressure ◽  
Micro Channel ◽  
Fiber Probe ◽  
Fabry Perot ◽  
Vernier Effect
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