Dispersionless tunneling of slow light in antisymmetric photonic crystal couplers.
We suggest a novel and general approach to the design of photonic-crystal directional couplers operating in the slow-light regime. We predict, based on a general symmetry analysis, that robust tunneling of slow-light pulses is possible between antisymmetrically coupled photonic crystal waveguides. We demonstrate, through 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.
Centre for Ultrahigh-bandwidth Devices for Optical Systems, Research School of Physical Sciences and Engineering, Australian National University, Canberra, ACT 0200, Australia. sha124@rsphysse.anu.edu.au
Sangwoo
S
Ha
Andrey A
AA
Sukhorukov
Kokou B
KB
Dossou
Lindsay C
LC
Botten
Andrei V
AV
Lavrinenko
Dmitry N
DN
Chigrin
Yuri S
YS
Kivshar
D003198:Computer Simulation; D017076:Computer-Aided Design; D003460:Crystallization / Q000379:methods*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D008027:Light; D008962:Models, Theoretical; D017785:Photons; D012542:Scattering, Radiation; D014159:Transducers