Fabry-Perot cavity based on air bubble for high sensitivity lateral load and strain measurements

2017 ◽  
Author(s):  
Susana Novais ◽  
Marta S. Ferreira ◽  
João L. Pinto
Keyword(s):  
High Sensitivity ◽  
Lateral Load ◽  
Strain Measurements ◽  
Air Bubble ◽  
Fabry Perot

High-sensitivity strain sensor with an in-fiber air-bubble Fabry-Perot interferometer

2018 ◽  
Vol 113 (18) ◽  
pp. 181901 ◽  
Author(s):  
Kun Zhou ◽  
Ming-Zhong Ai ◽  
Zhong-Hua Qian ◽  
Xin-Xia Gao ◽  
Zhi-Hao Hu ◽  
...  
Keyword(s):  
Strain Sensor ◽  
High Sensitivity ◽  
Air Bubble ◽  
Fabry Perot

High-sensitivity chirped tapered fiber-Bragg-grating-based Fabry–Perot cavity for strain measurements

2020 ◽  
Vol 45 (10) ◽  
pp. 2838
Author(s):  
Konrad Markowski ◽  
Piotr Araszkiewicz ◽  
Juliusz Bojarczuk ◽  
Krzysztof Perlicki
Keyword(s):  
Fiber Bragg Grating ◽  
High Sensitivity ◽  
Bragg Grating ◽  
Strain Measurements ◽  
Tapered Fiber ◽  
Fabry Perot

Interferometric calibration of a strainmeter transducer

1971 ◽  
Vol 61 (4) ◽  
pp. 937-955
Author(s):  
Stanley Smookler ◽  
John V. Kline
Keyword(s):  
Thermal Expansion ◽  
Theoretical Analysis ◽  
Interference Pattern ◽  
Central Zone ◽  
Steel Tube ◽  
Peak Width ◽  
Strain Measurements ◽  
Fabry Perot

abstract A capacitive-strainmeter transducer is calibrated using a variable-spacing, Fabry-Perot interferometer. Optical flats are mounted on a spring parallelogram. Thermal expansion of a steel tube deforms the parallelogram, smoothly displacing one of the optical flats. This modulates the intensity of the 5016 àline, observed at the central zone of the interference pattern, and thus produces sharp peaks on a pen recorder. A theoretical analysis of the peak width, based on the work of Chabbal (1958), agrees with that recorded by the interferometer. This calibration permits earth-strain measurements to an accuracy of 1 per cent.

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.

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