18 June 2002 Micron-size bending radii in silica-based waveguides
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Proceedings Volume 4640, Integrated Optics: Devices, Materials, and Technologies VI; (2002) https://doi.org/10.1117/12.433272
Event: Symposium on Integrated Optoelectronic Devices, 2002, San Jose, California, United States
Abstract
Sharp bends in low index contrast waveguides using tapered air trenches are proposed. To minimize cladding-trench junction loss, cladding tapers are designed to provide adiabatic mode shaping between low and high index contrast regions. Drastic reduction in effective bend radius is predicted. We present 2D FDTD/EIM simulations of bends in representative silica index contrasts. Substrate loss in air trenches of finite depth is investigated, and the required trench depth, given an acceptable substrate loss, is calculated. Fabrication steps are described.
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Milos Popovic, Milos Popovic, Kazumi Wada, Kazumi Wada, Shoji Akiyama, Shoji Akiyama, Hermann A. Haus, Hermann A. Haus, Jurgen Michel, Jurgen Michel, } "Micron-size bending radii in silica-based waveguides", Proc. SPIE 4640, Integrated Optics: Devices, Materials, and Technologies VI, (18 June 2002); doi: 10.1117/12.433272; https://doi.org/10.1117/12.433272
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