Characterization of cascaded forward Brillouin scattering seeded by backward stimulated Brillouin scattering in optical fibers

Neisei Hayashi; Yosuke Mizuno; Heeyoung Lee; Kentaro Nakamura; Sze Yun Set; Shinji Yamashita

doi:10.1587/elex.17.20200139

This article has now been updated. Please use the final version.

Characterization of cascaded forward Brillouin scattering seeded by backward stimulated Brillouin scattering in optical fibers

Neisei Hayashi, Yosuke Mizuno, Heeyoung Lee, Kentaro Nakamura, Sze Yun Set, Shinji Yamashita

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Keywords: Brillouin scattering, optical fiber sensing, temperature sensing

JOURNAL FREE ACCESS Advance online publication

Article ID: 17.20200139

DOI https://doi.org/10.1587/elex.17.20200139

The final version of this article is now available: Vol. 17 (2020), No. 12 pp. 20200139-20200139

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Abstract

We present a method for generating cascaded forward Brillouin scattering (CFBS) on the basis of a counter-propagated pump-probe technique with backward stimulated Brillouin scattering used as its seed. The CFBS, induced by forward stimulated Brillouin scattering (FSBS), is generated via the energy transfer from the probe light to other acoustic resonance frequencies. The CFBS spectrum generated in a 390-m-long highly nonlinear fiber exhibits a high signal-to-noise ratio (SNR), and the center frequencies of its acoustic resonance peaks agree with theoretical values. In addition, the SNR dependence on pump/probe powers and the CFBS frequency shift dependence on temperature are investigated.

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