Sensitivity distribution of a vibration sensor based on Mach-Zehnder interferometer designed inside the window system

Zboril, Ondrej; Nedoma, Jan; Čubík, Jakub; Novák, Martin; Bednarek, Lukas; Fajkus, Marcel; Vašinek, Vladimír

doi:10.1117/12.2239548

Cited by 2 publications

(1 citation statement)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The pencil break signal with a frequency of 9 MHz can be detected on the sensing fiber of 320 km, and the spatial resolution of 31 m can be achieved. In 2016, Zboril et al used Mach-Zehnder optical fiber sensing system to detect acoustic vibrations caused by touching on the window panes [49]. Finally, the results have shown that the system can measure the very weak acoustic vibration generated on the surface of plastic windows, and has high sensitivity, which can be applied to the field of safety protection.…”

Section: ) Mach-zehnder Interferometermentioning

confidence: 99%

A Comprehensive Study of Optical Fiber Acoustic Sensing

et al. 2019

View full text Add to dashboard Cite

The optical fiber acoustic sensing system is suitable for long-distance monitoring of the acoustic signals generated by the external disturbances. According to the continuity of sensing units, quasi-distributed and distributed optical fiber acoustic sensing technologies are differentiated to meet different application requirements. On the one hand, the recent progress of Fabry-Perot interferometer (FPI) focusing on the diaphragm material, and the research hotspots in the field of the continuous Fiber Bragg grating (FBG) array are firstly reviewed. On the other hand, Mach-Zehnder interferometry (MZI), Michelson interferometry (MI), and Sagnac interferometry (SI) have rapidly developed in the aspect of the demodulation algorithm optimization with the purpose of the sensing performance improvement. Moreover, the current primary research works of the phase-sensitive optical time-domain reflectometer (ϕ-OTDR) are the signalto-noise ratio improvement and the mixed optical structure design. Finally, this paper presents an overview of the recent advances of optical fiber acoustic sensing system in the application domains of military defense, structural health monitoring, petroleum exploration, and development. INDEX TERMS Acoustic detection, distributed acoustic sensing, optical fiber sensing, ϕ-OTDR, structural health monitoring.

show abstract

Section: ) Mach-zehnder Interferometermentioning

confidence: 99%