English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

We investigate the role of polarization effects in orbital angular momentummodes of an optical fiber. Specifically, we revisit the removal of thedegeneracy of the $HE$ and the $EH$ vector modes that exists within the weaklyguiding approximation (WGA); within WGA, these two vector modes coalesce into asingle spatial (scalar) orbital angular momentum (OAM) mode, defined by acommon topological charge and associated with left or right circularpolarization. While the polarization term of the vector wave equation acting asa Hermitian perturbation operator accounts for the splitting of the $HE$ andthe $EH$ vector modes, its extension to explain the accompanying fieldcorrection, called the polarization-induced field, encounters hurdles; thisfield is characterized by a topological charge differing by two in magnitude.The problems are critically examined with a possible remedy and itsimplications.

Polarization-Induced Interaction as a Perturbation within Orbital Angular Momentum(OAM) Modes of an Optical Fiber