Fabrication of low loss channel waveguide in tungsten-tellurite glass by 11 MeV carbon ion microbeam for telecom C band

0522013 - ÚJF 2020 RIV NL eng J - Journal Article
Banyasz, I. - Szilagyi, E. - Rajta, I. - Nagy, G. U. L. - Pelli, S. - Nunzi-Conti, G. - Berneschi, S. - Havránek, Vladimír - Voseček, Václav - Nagy, N. - Szabó, Z. - Veres, M. - Speghini, A.
Fabrication of low loss channel waveguide in tungsten-tellurite glass by 11 MeV carbon ion microbeam for telecom C band.
Optical Materials: X. Roč. 4, č. 12 (2019), č. článku 100035. ISSN 2590-1478
R&D Projects: GA MŠMT LM2015056; GA MŠMT EF16_013/0001812
Institutional support: RVO:61389005
Keywords : channel waveguides * integrated optics * microstructure fabrication * optical design and fabrication * rare earth doped materials
OECD category: Nuclear physics
Method of publishing: Open access
https://doi.org/10.1016/j.omx.2019.100035

Channel waveguides were directly written in Er: TeO2W2O3 glass using 11 MeV C4+ ion microbeam with fluences in the range of 1·1014–5·1016 ion/cm2. The channel waveguides supported a single guided mode at Lambda = 1540 nm. Propagation losses of the as-irradiated channel waveguides were around 14 dB/cm. A 30-min thermal annealing at 150 °C in air reduced propagation losses at Lambda = 1400 nm to 1.5 dB/cm. This method produced channel waveguides with confinement and propagation losses comparable to or better than other current methods, such as MeV energy focused proton or helium ion beam writing.
Permanent Link: http://hdl.handle.net/11104/0306540