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Integrated acousto-optical mode-convertors with weighted coupling using surface acoustic wave directional couplers

Integrated acousto-optical mode-convertors with weighted coupling using surface acoustic wave directional couplers

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© The Institution of Electrical Engineers
Published

Acoustic directional couplers for guided surface acoustic waves have been developed for application in a weighted acousto-optical TE-TM convenor in LiNbO3. Tapering of the coupling strength is achieved by longitudinally sin2-varying acoustic power providing a filter response with strongly suppressed sidelobes.

Inspec keywords: surface acoustic wave devices; integrated optics; acousto-optical devices

Other keywords: LiNbO3; suppressed sidelobes; filter response; guided surface acoustic waves; acousto-optical mode-convertors; coupling strength; SAW directional couplers; weighted coupling

Subjects: Integrated optics; Acousto-optical devices; Acoustic wave devices

References

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      • E.G.H. Lean , C.G. Powell . Optical probing of surface acoustic waves. Proc. IEEE , 1939 - 1947
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      • D.A. Smith , J.J. Johnson , B.L. Heffner , K.-W. Cheung , J.E. Baran . Two-stage integrated optical acoustically tunable optical filter with enhanced sidelobe suppression. Electron. Lett. , 398 - 399
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      • K.-W. Cheung . Acoustooptic tunable filters in narrowband WDM networks: system issues and network applications. IEEE J. Sel. Areas Commun. , 1015 - 1025
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      • H. Herrmann , P. Müller-Reich , V. Reimann , R. Ricken , H. Seibert , W. Sohler . Integrated optical, TE- and TM-pass, acoustically tunable, double-stage wavelength filters in LiNbO3. Electron. Lett. , 7 , 642 - 644
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