Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Increased polarization crosstalk in planar silica waveguides with high index contrast and non-vertical side walls

Not Accessible

Your library or personal account may give you access

Abstract

Modes in optical waveguide with two-dimensional confinement are not strictly TE or TM but hybrid in nature, which means that all the six components of the vector magnetic and electric fields are present. For the fundamental quasi-TE (Hy11) mode the Hy component is the dominant one and the non-dominant Hx component is often very small. Similarly, for the fundamental quasi-TM (Hx11) mode its Hx component is the dominant and the Hy component is the non-dominant one. In this study the modal hybridness is defined as the ratio of the non-dominant to the dominant field components, i.e. Hx/Hy and Hy/Hx for the quasi-TE and TM modes, respectively. Modal hybridness is higher for semiconductor waveguides compared to silica waveguides because of their high index contrast, An. It has also been shown that a waveguide with a slanted sidewall, where structural symmetry is broken, and when two fundamental modes are nearly phase-matched, modal hybridness is enhanced considerably, and these features have been exploited to design passive polarization rotators [1].

© 2002 Optical Society of America

PDF Article
More Like This
Compact Passive Polarization Converter using Slanted Semiconductor Rib Waveguides

B. M. A. Rahman, N. Somasiri, and M. Rajarajan
IThB5 Integrated Photonics Research (IPR) 2000

Compact Polarization Rotators Using Bent Optical Waveguides

S. S. A. Obayya, B. M. A. Rahman, and K. T. V. Grattan
ITuB6 Integrated Photonics Research (IPR) 2001

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved