Nonlinear-Optical Processing of OAM Light States in a Few-Mode Fiber

Utilizing the phase-matching conditions of inter-modal four-wave mixing in an elliptical-core few-mode fiber supporting three non-degenerate modes, we experimentally demonstrate schemes for generating orbital-angular-momentum (OAM)-entangled photon pairs with high mode purity and for achieving highl...

Full description

Saved in:
Bibliographic Details
Main Authors: Cheng Guo, Afshin Shamsshooli, Francesca Parmigiani, Xiaoying Li, Michael Vasilyev
Format: Article
Language:English
Published: MDPI AG 2025-03-01
Series:Photonics
Subjects:
Online Access:https://www.mdpi.com/2304-6732/12/3/233
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Utilizing the phase-matching conditions of inter-modal four-wave mixing in an elliptical-core few-mode fiber supporting three non-degenerate modes, we experimentally demonstrate schemes for generating orbital-angular-momentum (OAM)-entangled photon pairs with high mode purity and for achieving highly mode-selective frequency conversion of beams in OAM-compatible (LP<sub>11a</sub>, LP<sub>11b</sub>) mode basis. These techniques expand the toolbox for using OAM modes in both classical and quantum communications and information processing.
ISSN:2304-6732