A zeroth-order modification of coupled mode theory for waveguide gratings

Seyedeh Mahsa Kamali; Ehsan Arbabi; Lynford L. Goddard

doi:10.1109/LPT.2015.2392626

A zeroth-order modification of coupled mode theory for waveguide gratings

Seyedeh Mahsa Kamali, Ehsan Arbabi, Lynford L. Goddard

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

Abstract

This letter demonstrates the importance of selecting the correct unperturbed structure for coupled mode theory calculations of waveguide gratings. Neglecting the spatial dependence of the average value of the perturbation can cause considerable inaccuracies in the analysis of many common structures. Here, we show the improvement that can be achieved by including this zeroth-order modification and how to choose the proper unperturbed structure through several practical device examples.

Original language	English (US)
Article number	7010020
Pages (from-to)	790-793
Number of pages	4
Journal	IEEE Photonics Technology Letters
Volume	27
Issue number	7
DOIs	https://doi.org/10.1109/LPT.2015.2392626
State	Published - Apr 1 2015

Keywords

Bragg gratings
Computational
Distributed feedback devices
Optical Waveguides
electromagnetics

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

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10.1109/LPT.2015.2392626

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A zeroth-order modification of coupled mode theory for waveguide gratings

Abstract

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