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https://hdl.handle.net/20.500.11851/5960
Title: | Slow-Light Regime and Critical Coupling in Highly Multimode Corrugated Waveguides |
Authors: | Kurt, Hamza Benisty, H. Melo, T. Knayam, O. Cambournae, C. |
Publisher: | Optical Society of America (OSA) |
Abstract: | Large and periodically corrugated optical waveguide structures are shown to possess specific modal regimes of slow-light propagation that are easily attainable. The very multimode nature of the coupling is studied by employing coupled-mode theory and the plane-wave expansion method. Given a large enough light cone, associated with a surrounding medium with low enough refractive index, we notably identify a critical slowdown regime with an interesting bandwidth-slowdown product. Essential features of these original systems are further explored: the nature of the coupled modes, the role of gain, symmetry effects, polarization, and relation with photonic-crystal systems. Practical systems are introduced using finite-difference time-domain methods, which provides first-order rules for the use of the above phenomena and their implementation in devices. © 2008 Optical Society of America. |
URI: | https://doi.org/10.1364/JOSAB.25.0000C1 https://hdl.handle.net/20.500.11851/5960 |
ISSN: | 0740-3224 |
Appears in Collections: | Elektrik ve Elektronik Mühendisliği Bölümü / Department of Electrical & Electronics Engineering Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection |
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