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Title: Numerical simulation of a speckle pattern formed by radiation of optical vortices in a multimode optical fibre

Abstract

The formation of optical vortices in optical fibres is studied. Speckle patterns of optical fibres produced due to the interference of guided modes and optical vortices are simulated. The spatial statistical characteristics of speckle structures are obtained. It is shown that speckle structures, formed by the radiation of optical vortices rotating in the same direction, have the characteristic azimuthal angular dimensions of spots that are considerably larger than their axial size, whereas speckle patterns, formed by vortices rotating in the opposite directions, do not virtually differ from speckles produced due to the interference of usual guided modes. A method is proposed to distinguish speckles produced by optical vortices rotating in the same direction from speckles formed by usual guided modes with the predominant excitation of modes with comparatively small azimuthal indices. A comparison with experimental data is performed. (optical fibres)

Authors:
 [1]
  1. St. Petersburg State Technical University, St. Petersburg (Russian Federation)
Publication Date:
OSTI Identifier:
21185836
Resource Type:
Journal Article
Journal Name:
Quantum Electronics (Woodbury, N.Y.)
Additional Journal Information:
Journal Volume: 38; Journal Issue: 2; Other Information: DOI: 10.1070/QE2008v038n02ABEH013581; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7818
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COMPARATIVE EVALUATIONS; EXCITATION; INTERFERENCE; OPTICAL FIBERS; SIMULATION

Citation Formats

Kiesewetter, D V. Numerical simulation of a speckle pattern formed by radiation of optical vortices in a multimode optical fibre. United States: N. p., 2008. Web. doi:10.1070/QE2008V038N02ABEH013581; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA).
Kiesewetter, D V. Numerical simulation of a speckle pattern formed by radiation of optical vortices in a multimode optical fibre. United States. https://doi.org/10.1070/QE2008V038N02ABEH013581; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA)
Kiesewetter, D V. Thu . "Numerical simulation of a speckle pattern formed by radiation of optical vortices in a multimode optical fibre". United States. https://doi.org/10.1070/QE2008V038N02ABEH013581; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA).
@article{osti_21185836,
title = {Numerical simulation of a speckle pattern formed by radiation of optical vortices in a multimode optical fibre},
author = {Kiesewetter, D V},
abstractNote = {The formation of optical vortices in optical fibres is studied. Speckle patterns of optical fibres produced due to the interference of guided modes and optical vortices are simulated. The spatial statistical characteristics of speckle structures are obtained. It is shown that speckle structures, formed by the radiation of optical vortices rotating in the same direction, have the characteristic azimuthal angular dimensions of spots that are considerably larger than their axial size, whereas speckle patterns, formed by vortices rotating in the opposite directions, do not virtually differ from speckles produced due to the interference of usual guided modes. A method is proposed to distinguish speckles produced by optical vortices rotating in the same direction from speckles formed by usual guided modes with the predominant excitation of modes with comparatively small azimuthal indices. A comparison with experimental data is performed. (optical fibres)},
doi = {10.1070/QE2008V038N02ABEH013581; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA)},
url = {https://www.osti.gov/biblio/21185836}, journal = {Quantum Electronics (Woodbury, N.Y.)},
issn = {1063-7818},
number = 2,
volume = 38,
place = {United States},
year = {2008},
month = {2}
}