Second-order nonlinearity generation in alkali-glass-based optical fibers

Authors

  • Alicja Anuszkiewicz Institute of Microelectronics and Photonics - Lukasiewicz Research Network
  • Rafał Kasztelanic 1) Lukasiewicz Research Network, Institute of Microelectronics and Photonics, 2) Faculty of Physics, University of Warsaw https://orcid.org/0000-0002-6901-4641
  • Ryszard Buczyński 1) Lukasiewicz Research Network, Institute of Microelectronics and Photonics, 2) Faculty of Physics, University of Warsaw https://orcid.org/0000-0003-2863-725X

DOI:

https://doi.org/10.4302/plp.v17i3.1356

Abstract

We analyzed the mechanism of alkali-ions migration taking part in obtaining the frozen ionic potential responsible for the creation of second-order nonlinearity in optical fibers made of silica and other oxide-based glasses. We confirmed that the presence of alkali ions in the oxide glass, together with a high χ(3) value, allows to obtain ionic potential, even though these ions are structural elements of glass rather than impurities. Creation of second-order susceptibility in glass is possible and, depending on alkali-ion concentration, χ(2) can be higher than for a silica-based fiber of the same geometry. Calculated χ(2) reached 0.58 pm/V, and the maximum value obtained for silica-based fiber for the same thermal poling conditions was only 0.33 pm/V.

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Published

2025-10-01

How to Cite

[1]
A. Anuszkiewicz, R. Kasztelanic, and R. Buczyński, “Second-order nonlinearity generation in alkali-glass-based optical fibers”, Photonics Lett. Pol., vol. 17, no. 3, pp. 70–72, Oct. 2025.

Issue

Vol. 17 No. 3 (2025)

Section

Articles

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Copyright (c) 2025 Alicja Anuszkiewicz, RAFAL KASZTELANIC, RYSZARD BUCZYNSKI

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