Suspended mid-infrared waveguides for stimulated brillouin scattering

Schmidt, MK; Poulton, CG; Mashanovich, GZ; Reed, GT; Eggleton, BJ; Steel, MJ

Suspended mid-infrared waveguides for stimulated brillouin scattering

Schmidt, MK Poulton, CG

Mashanovich, GZ Reed, GT Eggleton, BJ Steel, MJ

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Publication Type:: Journal Article
Citation:: Optics Express, 2019, 27 (4), pp. 4976 - 4989
Issue Date:: 2019-01-01

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Field	Value	Language
dc.contributor.author	Schmidt, MK	en_US
dc.contributor.author	Poulton, CG https://orcid.org/0000-0002-2707-3424	en_US
dc.contributor.author	Mashanovich, GZ	en_US
dc.contributor.author	Reed, GT	en_US
dc.contributor.author	Eggleton, BJ	en_US
dc.contributor.author	Steel, MJ	en_US
dc.date.issued	2019-01-01	en_US
dc.identifier.citation	Optics Express, 2019, 27 (4), pp. 4976 - 4989	en_US
dc.identifier.uri	http://hdl.handle.net/10453/134236
dc.description.abstract	© 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement. We theoretically investigate a new class of silicon waveguides for achieving Stimulated Brillouin Scattering (SBS) in the mid-infrared (MIR). The waveguide consists of a rectangular core supporting a low-loss optical mode, suspended in air by a series of transverse ribs. The ribs are patterned to form a finite quasi-one-dimensional phononic crystal, with the complete stopband suppressing the transverse leakage of acoustic waves, confining them to the core of the waveguide. We derive a theoretical formalism that can be used to compute the opto-acoustic interaction in such periodic structures, and find forward intramodal-SBS gains up to 1750 m -1 W -1 , which compares favorably with the proposed MIR SBS designs based on buried germanium waveguides. This large gain is achieved thanks to the nearly complete suppression of acoustic radiative losses.	en_US
dc.relation	http://purl.org/au-research/grants/arc/DP160101691
dc.relation.ispartof	Optics Express	en_US
dc.relation.isbasedon	10.1364/OE.27.004976	en_US
dc.rights	© 2019 Optical Society of America. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved.	en_US
dc.subject.classification	Optics	en_US
dc.title	Suspended mid-infrared waveguides for stimulated brillouin scattering	en_US
dc.type	Journal Article
utslib.citation.volume	4	en_US
utslib.citation.volume	27	en_US
utslib.for	0205 Optical Physics	en_US
utslib.for	0906 Electrical and Electronic Engineering	en_US
utslib.for	1005 Communications Technologies	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
utslib.copyright.status	open_access
pubs.issue	4	en_US
pubs.publication-status	Published	en_US
pubs.volume	27	en_US

Abstract:

© 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement. We theoretically investigate a new class of silicon waveguides for achieving Stimulated Brillouin Scattering (SBS) in the mid-infrared (MIR). The waveguide consists of a rectangular core supporting a low-loss optical mode, suspended in air by a series of transverse ribs. The ribs are patterned to form a finite quasi-one-dimensional phononic crystal, with the complete stopband suppressing the transverse leakage of acoustic waves, confining them to the core of the waveguide. We derive a theoretical formalism that can be used to compute the opto-acoustic interaction in such periodic structures, and find forward intramodal-SBS gains up to 1750 m -1 W -1 , which compares favorably with the proposed MIR SBS designs based on buried germanium waveguides. This large gain is achieved thanks to the nearly complete suppression of acoustic radiative losses.

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http://hdl.handle.net/10453/134236