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High fidelity waveguides through vitreous media recomposition for next generation photonic devices

T. Toney Fernandez*, Andrew Ross-Adams, Mark Bakovic, Jens Ulrich Thomas, Oliver Hochrein, Hadi Mahmodi, Irina Kabakova, Karen Privat, Michael Withford, Simon Gross

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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Abstract

A newly designed optical aluminosilicate glass that supports femotsecond laser written ultra-low loss optical waveguides is presented in this paper. Propagation losses as low as −0.020 ± 0.003 and −0.037 ± 0.003 dB cm−1 at 1310 and 1550 nm, respectively, are enabled by engineering the glass composition. Raman, Brillouin and electron microscopies are used to understand the origins of femtosecond laser-induced refractive index changes.

Original languageEnglish
Article number2403427
Pages (from-to)1-11
Number of pages11
JournalAdvanced Optical Materials
Volume13
Issue number20
DOIs
Publication statusPublished - 11 Jul 2025

Bibliographical note

© 2025 The Author(s). Advanced Optical Materials published by Wiley-VCH GmbH. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

Keywords

  • Brillouin scattering
  • electron probe microanalysis
  • photonic integrated circuits
  • refractive index engineering
  • ultra-low loss optical waveguides
  • ultrafast light–matter interaction

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