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Losses and orbital part of the Poynting vector of air-core modes in hollow-core fibers
G.K. Alagashev 1, S.S. Stafeev 2, A.D. Pryamikov 1

1 Prokhorov General Physics Institute of RAS,
119991, Moscow, Russia, Valilova St. 38;
2 Image Processing Systems Institute, NRC "Kurchatov Institute",
443001, Samara, Russia, Molodogvardeiskaya St. 151

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DOI: 10.18287/2412-6179-CO-1349

Pages: 192-196.

Full text of article: English language.

Abstract:
In our earlier works, we investigated a relationship between the formation of vortices in the transverse component of the Poynting vector of core modes and the regimes of strong localization of these modes in solid core micro-structured optical fibers. In this paper, we consider the behavior of the orbital part of the Poynting vector of fundamental and high-order modes in hollow-core fibers, and make comparisons with similar fundamental core mode behavior in solid core micro-structured optical fibers. We then demonstrated the impact of the “negative” curvature of the core-cladding boundary of a hollow-core fiber on the behavior of the orbital part of the Poynting vector of the air-core modes.

Keywords:
micro-structured optical fibers, singular optics, core modes, spin and orbital parts of the Poynting vector, light localization.

Citation:
Alagashev GK, Stafeev SS, Pryamikov AD. Losses and orbital part of the Poynting vector of air-core modes in hollow-core fibers. Computer Optics 2024; 48 (2): 192-196. DOI: 10.18287/2412-6179-CO-1349.

Acknowledgements:
The work was funded Russian Science Foundation under project # 22-22-00575.

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