Engineering of orbital angular momentum supermodes in coupled optical waveguides

Turpin, A. , Pelegrí, G., Polo, J., Mompart, J. and Ahufinger, V. (2017) Engineering of orbital angular momentum supermodes in coupled optical waveguides. Scientific Reports, 7, 44057. (doi: 10.1038/srep44057) (PMID:28443618) (PMCID:PMC5405417)

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Abstract

In this work we demonstrate the existence of orbital angular momentum (OAM) bright and dark supermodes in a three-evanescently coupled cylindrical waveguides system. Bright and dark supermodes are characterized by their coupling and decoupling from one of the waveguides, respectively. In addition, we demonstrate that complex couplings between modes of different waveguides appear naturally due to the characteristic spiral phase-front of OAM modes in two-dimensional configurations where the waveguides are arranged forming a triangle. Finally, by adding dissipation to the waveguide uncoupled to the dark supermode, we are able to filter this supermode out, allowing for the design of OAM mode cloners and inverters.

Item Type:Articles
Additional Information:The authors gratefully acknowledge financial support through the Spanish Ministry of Science and Innovation (MINECO) (Contract No. FIS2014-57460P) and the Catalan Government (Contract No. SGR2014-1639). J.P. acknowledges financial support from the MICINN through the Grant No. BES-2012-053447. G.P. acknowledges financial support from the MICINN through the Grant No. BES-2015-073772.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Turpin, Dr Alejandro
Authors: Turpin, A., Pelegrí, G., Polo, J., Mompart, J., and Ahufinger, V.
College/School:College of Science and Engineering > School of Computing Science
College of Science and Engineering > School of Physics and Astronomy
Journal Name:Scientific Reports
Publisher:Nature Research
ISSN:2045-2322
ISSN (Online):2045-2322
Copyright Holders:Copyright © 2017 The Authors
First Published:First published in Scientific Reports 7: 44057
Publisher Policy:Reproduced under a Creative Commons License

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