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Acoustic dispersion measurement for a single‐mode‐fiber‐based acoustooptic tunable filter excited by flexural acoustic wave
Author(s) -
Zhang Hao,
Liu Bo,
Lin Wei,
Dong Hongguang,
Liu Lihui
Publication year - 2012
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.26790
Subject(s) - acoustics , materials science , acoustic dispersion , acoustic wave , cladding (metalworking) , dispersion (optics) , optics , phase velocity , physics , metallurgy
An experimental approach to directly measure acoustic dispersion for a single‐mode‐fiber‐based acoustooptic tunable filter excited by flexural acoustic wave has been proposed and experimentally demonstrated. The cladding modes that participate in the mode coupling process have been ascertained by using the phase matching condition. And based on experimental observation of transmission spectral response to applied frequency, acoustic phase velocity as a function of applied radiation frequency signal frequency has been obtained. Furthermore, averaged acoustic dispersion across different cladding modes indicates that acoustic round frequency linearly increases with the increment of acoustic propagation constant with a coefficient of determination of 0.99941. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1281–1285, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26790