Engineering of orbital angular momentum supermodes in coupled optical waveguides

A. Turpin, G. Pelegrí, J. Polo, J. Mompart, V. Ahufinger

Research output: Contribution to journalArticleResearchpeer-review

8 Citations (Scopus)

Abstract

© The Author(s) 2017. 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 twodimensional 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.
Original languageEnglish
Article number44057
JournalScientific Reports
Volume7
DOIs
Publication statusPublished - 1 Jan 2017

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