Design of 60° Bent Ridge Waveguides Assisted by Hexagonal-lattice Cylinders

Novel 60° bent ridge waveguides with several layers of hexagonal-lattice dielectric cylinders around the bend corners are proposed in this paper. The finite-difference time-domain (FDTD) simulations show that just one or two layers of cylinders on the hexagonal array are sufficient to assist in turn...

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Bibliographic Details
Published inJournal of optical communications Vol. 34; no. 2; pp. 81 - 84
Main Authors Lee, Keh-Yi, Wu, Guo-Jung, Lin, Hong-Li, Liu, Chi-Kan
Format Journal Article
LanguageEnglish
Published Berlin De Gruyter 24.06.2013
Walter de Gruyter GmbH
Subjects
crystals
curvatures
Cylinders
loss
Optical reflection
theory
Waveguides
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Summary:Novel 60° bent ridge waveguides with several layers of hexagonal-lattice dielectric cylinders around the bend corners are proposed in this paper. The finite-difference time-domain (FDTD) simulations show that just one or two layers of cylinders on the hexagonal array are sufficient to assist in turning the guided wave into the 60° bending section. On the other hand, more than three layers of hexagonal-lattice cylinders may result in larger optical reflection such that less power reaches the output port.
ISSN:0173-4911
2191-6322
DOI:10.1515/joc-2011-0033