Transmission of optical vortices through fiber loop resonators

In this Letter, we study the propagation of optical vortices (OVs) through the loop resonator (LR) on a multimode fiber. We demonstrate the existence of a special resonance, which is in the inversion of the topological charge of the transmitted OV. Near the resonance, the output orbital angular mome...

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Bibliographic Details
Published in:Optics letters 2019-08, Vol.44 (16), p.4044-4047
Main Authors: Alexeyev, C N, Barshak, E V, Lapin, B P, Yavorsky, M A
Format: Article
Language:English
Subjects:
Angular momentum
Multiplexing
Orbital resonances (celestial mechanics)
Resonators
Vortices
Wave filters
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Summary:In this Letter, we study the propagation of optical vortices (OVs) through the loop resonator (LR) on a multimode fiber. We demonstrate the existence of a special resonance, which is in the inversion of the topological charge of the transmitted OV. Near the resonance, the output orbital angular momentum (OAM) is sensitive to wavelength-scale variations of the LR's optical path length, which can be used for super-efficient OAM control. We also show the feasibility of a combined wavelength and OAM division multiplexing in comb filters on such LRs.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.44.004044