Generalized normal mode expansion method for open and lossy periodic structures

Sravya Rao; Guillaume Le Saux; Yonatan Sivan; Parry Y. Chen

doi:10.1364/JOSAB.452555

Generalized normal mode expansion method for open and lossy periodic structures

Sravya Rao, Guillaume Le Saux, Yonatan Sivan, Parry Y. Chen

Unit of Photonics and Electro-Optics Engineering

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

We describe and demonstrate the extension of permittivity mode expansion, which is also know as generalized normal mode expansion (GENOME), to open and lossy periodic structures. The resulting expansion gives a complete spatial characterization of any open periodic structure, via the quasi-periodic Green's tensor, by a complete, discrete set of modes rather than a continuum. The method has been validated by comparing our expansion of an open waveguide array with a direct scattering calculation. Good agreement was obtained regardless of the source location or detuning from resonance.

Original language	English
Pages (from-to)	1338-1347
Number of pages	10
Journal	Journal of the Optical Society of America B: Optical Physics
Volume	39
Issue number	5
DOIs	https://doi.org/10.1364/JOSAB.452555
State	Published - 1 May 2022

ASJC Scopus subject areas

Statistical and Nonlinear Physics
Atomic and Molecular Physics, and Optics

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title = "Generalized normal mode expansion method for open and lossy periodic structures",

abstract = "We describe and demonstrate the extension of permittivity mode expansion, which is also know as generalized normal mode expansion (GENOME), to open and lossy periodic structures. The resulting expansion gives a complete spatial characterization of any open periodic structure, via the quasi-periodic Green's tensor, by a complete, discrete set of modes rather than a continuum. The method has been validated by comparing our expansion of an open waveguide array with a direct scattering calculation. Good agreement was obtained regardless of the source location or detuning from resonance.",

author = "Sravya Rao and Saux, {Guillaume Le} and Yonatan Sivan and Chen, {Parry Y.}",

note = "Funding Information: Funding. KAMIN grant; Deutsche Forschungsgemeinschaft (WE 5815/5-1) Publisher Copyright: {\textcopyright} 2022 Optica Publishing Group",

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T1 - Generalized normal mode expansion method for open and lossy periodic structures

AU - Rao, Sravya

AU - Saux, Guillaume Le

AU - Sivan, Yonatan

AU - Chen, Parry Y.

PY - 2022/5/1

Y1 - 2022/5/1

N2 - We describe and demonstrate the extension of permittivity mode expansion, which is also know as generalized normal mode expansion (GENOME), to open and lossy periodic structures. The resulting expansion gives a complete spatial characterization of any open periodic structure, via the quasi-periodic Green's tensor, by a complete, discrete set of modes rather than a continuum. The method has been validated by comparing our expansion of an open waveguide array with a direct scattering calculation. Good agreement was obtained regardless of the source location or detuning from resonance.

AB - We describe and demonstrate the extension of permittivity mode expansion, which is also know as generalized normal mode expansion (GENOME), to open and lossy periodic structures. The resulting expansion gives a complete spatial characterization of any open periodic structure, via the quasi-periodic Green's tensor, by a complete, discrete set of modes rather than a continuum. The method has been validated by comparing our expansion of an open waveguide array with a direct scattering calculation. Good agreement was obtained regardless of the source location or detuning from resonance.

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Generalized normal mode expansion method for open and lossy periodic structures

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