Chaotic Brillouin optical correlation-domain analysis
نویسندگان
چکیده
منابع مشابه
Brillouin Optical Correlation Domain Analysis in Composite Material Beams
Structural health monitoring is a critical requirement in many composites. Numerous monitoring strategies rely on measurements of temperature or strain (or both), however these are often restricted to point-sensing or to the coverage of small areas. Spatially-continuous data can be obtained with optical fiber sensors. In this work, we report high-resolution distributed Brillouin sensing over st...
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Brillouin optical correlation-domain analysis (B-OCDA) allows for distributed measurements of strain and temperature with sub-cm resolution. Time-multiplexing techniques have previously extended B-OCDA to the monitoring of many km of fiber and two million resolution points. Thus far, however, the number of scans of correlation peaks positions, necessary to cover the fiber under test, was restri...
متن کاملMeasurement Range Enlargement in Brillouin Optical Correlation Domain Analysis Using Multiple Correlation Peaks
So far, Brillouin scattering based sensors have been studied as promising technology for a distributed temperature or strain measurement in structural health monitoring [1-10]. Intrinsically, Brillouin scattering is an effect caused by acoustic vibrations in the medium when laser light travels in a medium such as an optical fiber. Since the sound wave is traveling, light is also subjected to a ...
متن کاملProposal of Brillouin optical correlation-domain reflectometry (BOCDR).
We propose a Brillouin optical correlation-domain reflectometry (BOCDR), which can measure the distribution of strain and/or temperature along an optical fiber from a single end, by detecting spontaneous Brillouin scattering with controlling the interference of continuous lightwaves. In a pulse-based conventional Brillouin optical time-domain reflectometry (BOTDR), it is difficult in principle ...
متن کاملHigh-resolution Brillouin optical correlation domain analysis with no spectral scanning.
Distributed Brillouin fiber sensors typically rely on the reconstruction of the steady-state Brillouin gain spectrum (BGS), through spectral scanning of the frequency offset between the pump and signal waves. In this work, we propose and demonstrate an alternative approach, in which the local Brillouin frequency shift (BFS) is extracted from temporal transient analysis of the step response of t...
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ژورنال
عنوان ژورنال: Optics Letters
سال: 2018
ISSN: 0146-9592,1539-4794
DOI: 10.1364/ol.43.001722