Micron-size bending radii in silica-based waveguides

Milos Popovic; Kazumi Wada; Shoji Akiyama; Hermann A. Haus; Jurgen Michel

doi:10.1117/12.433272

18 June 2002 Micron-size bending radii in silica-based waveguides

Milos Popovic, Kazumi Wada, Shoji Akiyama, Hermann A. Haus, Jurgen Michel

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.

Citation Download Citation

Milos Popovic, Kazumi Wada, Shoji Akiyama, Hermann A. Haus, and Jurgen Michel "Micron-size bending radii in silica-based waveguides", Proc. SPIE 4640, Integrated Optics: Devices, Materials, and Technologies VI, (18 June 2002); https://doi.org/10.1117/12.433272

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