M. Hammer, L. Ebers, and J. Förstner, “Hybrid coupled mode modelling of the evanescent excitation of a dielectric tube by semi-guided waves at oblique angles,” Optical and Quantum Electronics, vol. 52, 2020.
LibreCat: /record/20189
DOI: 10.1007/s11082-020-02595-z

L. Ebers, M. Hammer, and J. Förstner, “Spiral modes supported by circular dielectric tubes and tube segments,” Optical and Quantum Electronics, vol. 49, no. 4, p. 49:176, 2017.
LibreCat: /record/3830
DOI: 10.1007/s11082-017-1011-x