Si photonic wire waveguides

Toshihiko Baba

doi:10.1117/12.559215

8 October 2004 Si photonic wire waveguides

Toshihiko Baba

Proceedings Volume 5515, Nanoengineering: Fabrication, Properties, Optics, and Devices; (2004) https://doi.org/10.1117/12.559215
Event: Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States

Abstract

Due to their ultrahigh index contrast structure, Si photonic wire waveguides realize various micro-components, which enable us to design and fabricate compact photonic devices and circuits. We have already demonstrated them theoretically and experimentally in some journal papers and two SPIE proceedings. In this work, I pick up other two topics; one is the polarization crosstalk, and the other is a Mach-Zehnder interferometer. The former will be a significant problem that degrades the performance of functional circuits based on polarization-dependent devices. It was experimentally meas-ured, and its reduction method was theoretically investigated by the three-dimensional finite-difference time domain method. The latter device is a basic element of functional circuits. By employing micro-bends and micro-couplers, a high extinc-tion ratio of over 15 dB and a large diffraction order of 300 were achieved within a small foot space of 20 times 20 square microns.

Citation Download Citation

Toshihiko Baba "Si photonic wire waveguides", Proc. SPIE 5515, Nanoengineering: Fabrication, Properties, Optics, and Devices, (8 October 2004); https://doi.org/10.1117/12.559215

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