Slow-light regime and critical coupling in highly multimode corrugated waveguides
JOSA B, Vol. 25, Issue 12, pp. C1-C14 (2008)
http://dx.doi.org/10.1364/JOSAB.25.0000C1
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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
OCIS Codes
(050.1940) Diffraction and gratings : Diffraction
(050.2770) Diffraction and gratings : Gratings
(130.2790) Integrated optics : Guided waves
(230.7370) Optical devices : Waveguides
(130.5296) Integrated optics : Photonic crystal waveguides
(050.5298) Diffraction and gratings : Photonic crystals
ToC Category:
Slow Light in Coupled Resonators and Waveguides
History
Original Manuscript: April 21, 2008
Revised Manuscript: June 2, 2008
Manuscript Accepted: June 6, 2008
Published: July 30, 2008
Citation
H. Kurt, H. Benisty, T. Melo, O. Khayam, and C. Cambournac, "Slow-light regime and critical coupling in highly multimode corrugated waveguides," J. Opt. Soc. Am. B 25, C1-C14 (2008)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-25-12-C1
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