Short bends using curved mirrors in silicon waveguides for terahertz waves
OPTICS EXPRESS(2022)
摘要
Dielectric waveguides are capable of confining and guiding terahertz waves along sub-wavelength sized structures. A small feature size allows for a denser integration of different photonic components such as modulators, beam-splitters, wavelength (de)multiplexers and more. The integration of components on a small scale requires bending of the waveguides. In this paper we demonstrate a very short silicon 90 degrees-bend, based on total internal reflection on an elliptically curved outer facet and a rounding of the inner corner joining two waveguides, with an average loss of 0.14 dB per bend in the 600-750 GHz range. (C) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
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