Tailoring the directive nature of optical waveguide antennas

H. Farheen; L. Yan; T. Leuteritz; S. Qiao; F. Spreyer; C. Schlickriede; V. Quiring; C. Eigner; C. Silberhorn; T. Zentgraf; S. Linden; V. Myroshnychenko; J. Förstner

doi:10.1117/12.2658921

17 March 2023 Tailoring the directive nature of optical waveguide antennas

H. Farheen, L. Yan, T. Leuteritz, S. Qiao, F. Spreyer, C. Schlickriede, V. Quiring, C. Eigner, C. Silberhorn, T. Zentgraf, S. Linden, V. Myroshnychenko, J. Förstner

Author Affiliations +

Proceedings Volume 12424, Integrated Optics: Devices, Materials, and Technologies XXVII; 124241E (2023) https://doi.org/10.1117/12.2658921
Event: SPIE OPTO, 2023, San Francisco, California, United States

Conference Poster

Abstract

We demonstrate the numerical and experimental realization of optimized optical traveling-wave antennas made of low-loss dielectric materials. These antennas exhibit highly directive radiation patterns and our studies reveal that this nature comes from two dominant guided TE modes excited in the waveguide-like director of the antenna, in addition to the leaky modes. The optimized antennas possess a broadband nature and have a nearunity radiation efficiency at an operational wavelength of 780 nm. Compared to the previously studied plasmonic antennas for photon emission, our all-dielectric approach demonstrates a new class of highly directional, low-loss, and broadband optical antennas.

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H. Farheen, L. Yan, T. Leuteritz, S. Qiao, F. Spreyer, C. Schlickriede, V. Quiring, C. Eigner, C. Silberhorn, T. Zentgraf, S. Linden, V. Myroshnychenko, and J. Förstner "Tailoring the directive nature of optical waveguide antennas", Proc. SPIE 12424, Integrated Optics: Devices, Materials, and Technologies XXVII, 124241E (17 March 2023); https://doi.org/10.1117/12.2658921

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