Optical Waveguiding

Authored by: Slawomir Sujecki

Handbook of Optoelectronic Device Modeling and Simulation

Print publication date:  October  2017
Online publication date:  October  2017

Print ISBN: 9781498749466
eBook ISBN: 9781315152301
Adobe ISBN:

10.1201/9781315152301-4

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Abstract

Optical waveguides are essential elements of many optoelectronic devices. Their primary role is shaping, confining, and guiding of an optical beam along a selected direction. The design and modeling of optical waveguides is based on the application of the macroscopic Maxwell's equations. This approach consists of approximating the microscopic electromagnetic fields that vary on the atomic scale with fields that are averaged over several atomic layers. Considering that an atom's diameter is up to several tenths of a nanometer while the optical waveguides contain structural details with dimensions smaller than 10 nm (e.g., quantum wells of a laser diode), the application of the macroscopic Maxwell equations to the design and modeling of optical waveguides is at its limit. This limitation should be borne in mind throughout this chapter.

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