Polarization of Brillouin scattered light in silica nanofibers

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TitrePolarization of Brillouin scattered light in silica nanofibers
Type de publicationConference Paper
Year of Publication2020
AuteursBuret C, Hauden M, Chretien J, Godet A, Sylvestre T, Beugnot J-C, Huy KPhan
EditorSchunemann PG, Schepler KL
Conference NameNONLINEAR FREQUENCY GENERATION AND CONVERSION: MATERIALS AND DEVICES XIX
PublisherSPIE
Conference Location1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
ISBN Number978-1-5106-3292-9
Mots-clésacoustic modes, Backward Brillouin scattering, ellipticity, Polarization, silica nanofiber
Résumé

We investigate both theoretically and experimentally the polarization properties of Brillouin light scattering in silica optical nanofibers. Our results show that while all hybrid acoustic waves scatter light without altering the state of polarization, one of the surface acoustic wave generates a depolarized Stokes light. Because of the slight ellipticity of the nanofiber, the surface wave is actually split into two torso-radial modes which give rise to polarization scrambling of the backward Brillouin Stokes signal. Our model also predicts that the polarization of the scattered light can be restored for one specific pump polarization.

DOI10.1117/12.2544894