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Proceedings Paper

Light trapping with a few cavities
Author(s): Clayton R. Otey; Michelle L. Povinelli; Shanhui Fan
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Paper Abstract

We describe a dynamically-tuned system capable of capturing light pulses incident from a waveguide in a pair of microcavities. We use coupled mode theory to design a method for determining how to tune the microcavity resonant frequencies. The results show that pulses can be captured almost completely, with arbitrarily small reflected power. We optimize the pulse capture bandwidth by varying the cavity coupling constants and show that the maximum bandwidth is comparable to the resonant-frequency tuning range. We demonstrate near complete pulse capture in FDTD simulations of a two cavity 2D photonic crystal implementation of the system. Current technology would allow for capture of pulses with widths as low as ~100ps, with a holding time limited only by cavity loss rates.

Paper Details

Date Published: 2 February 2009
PDF: 15 pages
Proc. SPIE 7226, Advances in Slow and Fast Light II, 72260Q (2 February 2009); doi: 10.1117/12.816328
Show Author Affiliations
Clayton R. Otey, Stanford Univ. (United States)
Michelle L. Povinelli, Univ. of Southern California (United States)
Shanhui Fan, Stanford Univ. (United States)

Published in SPIE Proceedings Vol. 7226:
Advances in Slow and Fast Light II
Selim M. Shahriar; Philip R. Hemmer; John R. Lowell, Editor(s)

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