NDLI: A Novel Boundary Element Method Using Surface Conductive Absorbers for Full-Wave Analysis of 3-D Nanophotonics

Content Provider	IEEE Xplore Digital Library
Author	Lei Zhang Jung Hoon Lee Oskooi, A. Hochman, A. White, J.K. Johnson, S.G.
Copyright Year	1983
Abstract	Fast surface integral equation (SIE) methods seem to be ideal for simulating 3-D nanophotonic devices, as such devices generate fields in both the interior device volume and in the infinite exterior domain. SIE methods were originally developed for computing scattering from structures with finite surfaces, and since SIE methods automatically represent the infinite extent of the exterior scattered field, there was no need to develop numerical absorbers. Numerical absorbers are needed when SIE methods are used to simulate nanophotonic devices that process or couple light, to provide nonreflecting termination at the optical ports of such devices. In this paper, we focus on the problem of developing an approach to absorbers that are suitable for port termination, yet preserve the surface-only discretization and the geometry-independent Green's function properties of the SIE methods. Preserving these properties allows the absorber approach to be easily incorporated in commonly used fast solvers. We describe our solution to the absorber problem, that of using a gradually increasing surface conductivity, and show how to include surface conductivity in SIE methods. We also analyze numerical results using our absorber approach to terminate a finite-length rectangular cross section dielectric waveguide. The numerical results demonstrate that our surface-conductivity absorber can easily achieve a reflected power of less than 10^-7, and that the magnitude of the transition reflection is proportional to 1/L^2d+2, where L is the absorber length and d is the order of the differentiability of the surface conductivity function.
Sponsorship	IEEE Lasers and Electro-Optics Society Optical Society of America
Starting Page	949
Ending Page	959
Page Count	11
File Size	802643
File Format	PDF
ISSN	07338724
Volume Number	29
Issue Number	7
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-04-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Surface waves Conductivity Optical surface waves Optical waveguides Surface impedance Waveguide theory Magnetic resonance imaging surface integral equation Boundary element method nanophotonics reflections surface conductive absorber
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics

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