Open AccessPhotonic crystal couplers for slow light
Author(s) -
Andrey A. Sukhorukov,
Sangwoo Ha,
Kokou B. Dossou,
L. C. Botten,
Andrei V. Lavrinenko,
Dmitry N. Chigrin,
Yuri S. Kivshar
Publication year - 2008
Publication title -
proceedings of spie, the international society for optical engineering/proceedings of spie
Language(s) - English
Resource type - Conference proceedings
SCImago Journal Rank - 0.192
H-Index - 176
eISSN - 1996-756X
pISSN - 0277-786X
DOI - 10.1117/12.772232
Subject(s) - photonic crystal , finite difference time domain method , slow light , optics , photonics , photonic integrated circuit , coupling (piping) , optoelectronics , physics , yablonovite , symmetry (geometry) , enhanced data rates for gsm evolution , materials science , telecommunications , computer science , mathematics , metallurgy , geometry
We propose a general approach to the design of directional couplers in photonic-crystals operating in the slow- light regime. We predict, based on a general symmetry analysis, that robust switching of slow-light pulses is possible between antisymmetrically coupled photonic crystal waveguides. We demonstrate, through numerical Bloch mode frequency-domain and finite-difference time-domain (FDTD) simulations that, for all pulses with strongly reduced group velocities at the photonic band-gap edge, complete switching occurs at a fixed coupling length of just a few unit cells of the photonic crystal.
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