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Proceedings Paper

Analysis of one-way coupling between asymmetric highly multimode waveguides
Author(s): DeGui Sun; Jeffery J. Maki; Ray T. Chen
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Paper Abstract

In this paper, a unidirectional electrooptic modulator based on an asymmetrical highly multi-mode wavedguide coupler is proposed. The energy distribution of all the guided modes within a highly multi-mode waveguide is studied and a new conclusion is obtained. Furthermore, the whole coupling process among all the guided modes between two nonidentical highly multi-mode waveguides is analyzed and the total coupling efficiency is calculated. To achieve high switching performance in a guided-wave coupler, a larger guide is made to have a dumping effect, which can be implemented by using an absorbing material or a grating. Based on the dumping effect, the dumping process is theoretically modeled and the dumping efficiency is simulated. Not only can a high dumping efficiency of 100 percent be achieved, but a high electrooptic modulation depth more than 90 percent can also be implemented.

Paper Details

Date Published: 6 June 1997
PDF: 11 pages
Proc. SPIE 2994, Physics and Simulation of Optoelectronic Devices V, (6 June 1997); doi: 10.1117/12.275578
Show Author Affiliations
DeGui Sun, Univ. of Texas at Austin (United States)
Jeffery J. Maki, Radiant Research, Inc. (United States)
Ray T. Chen, Univ. of Texas at Austin (United States)


Published in SPIE Proceedings Vol. 2994:
Physics and Simulation of Optoelectronic Devices V
Marek Osinski; Weng W. Chow, Editor(s)

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