How to obtain high spectral resolution of SBS-based distributed sensing by using nanosecond pulses | Zendy

V. P. Kalosha | Zendy; E. A. Ponomarev | Zendy; Liang Chen | Zendy; Xiaoyi Bao | Zendy

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How to obtain high spectral resolution of SBS-based distributed sensing by using nanosecond pulses

Author(s) -

V. P. Kalosha,

E. A. Ponomarev,

Liang Chen,

Xiaoyi Bao

Publication year - 2006

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.14.002071

Subject(s) - brillouin scattering , optics , laser linewidth , nanosecond , brillouin zone , materials science , image resolution , resolution (logic) , spectral resolution , pulse (music) , scattering , optical fiber , physics , laser , spectral line , detector , astronomy , artificial intelligence , computer science

The ultimate spectral and spatial resolutions of distributed sensing based on stimulated Brillouin scattering (SBS) in optical fibers is shown for several-nanosecond Stokes pulses. Precise measurements of the local Brillouin frequency, with a spectral resolution close to the natural linewidth and, simultaneously, the spatial resolution of the pulse length are provided by AC detection of the output pump in the case of a finite cw component (base) of the Stokes pulse. Simulation examples of SBS-based sensing for fibers containing sections with different Brillouin frequencies are presented, demonstrating the high resolution of the sensing.

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