MIMO Channel for Modal Multiplexing in Highly Overmoded Optical Waveguides
Authors
Daniel Lenz, Boris Rankov, Daniel Erni, Werner Bächtold, and Armin WittnebenReference
2004 International Zurich Seminar on Communications, IZS, Feb. 2004.[BibTeX, LaTeX, and HTML Reference]
Abstract
In order to meet the increasing demand for data rate in modern multi-processor systems optical transmission has become an important technology. Due to cost reasons only highly multimodal waveguides comes into question for mass-producible board level interconnects. We present the idea of an optical multiple-input multiple-output (MIMO) channel by having more than one data source at the channel input and a multi-segmented photodetector at the channel output. We develop channel models for the optical MIMO channel and show that orthogonality between modes in a highly multimodal waveguide can be exploited to submit independent data streams over different mode groups modal multiplexing. Our performance results in terms of bit error rates show that the MIMO scheme outperforms the SISO scheme when the data rate is the same. Hence, optical MIMO schemes allows either to increase the data rate by keeping the amount of intersymbol interference (ISI) constant or to reduce the ISI by keeping the data rate constant.Keywords
optical MIMO, optical channel model, intersymbol interference, rectangular waveguide, optical interconnects
Download this document:
Copyright Notice: © 2004 D. Lenz, B. Rankov, D. Erni, W. Bächtold, and A. Wittneben.
This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.