Open AccessFew-mode fiber with inverse-parabolic graded-index profile for transmission of OAM-carrying modes
Author(s) -
Bora Ung,
Pravin Vaity,
L. Wang,
Younès Messaddeq,
Leslie A. Rusch,
Sophie LaRochelle
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.018044
Subject(s) - optics , physics , transmission (telecommunications) , inverse , fiber , mode volume , mode (computer interface) , angular momentum , graded index fiber , optical fiber , materials science , fiber optic sensor , mathematics , geometry , telecommunications , classical mechanics , computer science , composite material , operating system
A novel type of few-mode fiber, characterized by an inverse-parabolic graded-index profile, is proposed for the robust transmission of cylindrical vector modes as well as modes carrying quantized orbital angular momentum (OAM). Large effective index separations between vector modes (>2.1 × 10(-4)) are numerically calculated and experimentally confirmed in this fiber over the whole C-band, enabling transmission of OAM(+/-1,1) modes for distances up to 1.1 km. Simple design rules are provided for the optimization of the fiber parameters.