Electro-optical switching using coupled photonic crystal waveguides | Zendy

Ahmed Sharkawy | Zendy; Shouyuan Shi | Zendy; Dennis W. Prather | Zendy; Richard Soref | Zendy

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Electro-optical switching using coupled photonic crystal waveguides

Author(s) -

Ahmed Sharkawy,

Shouyuan Shi,

Dennis W. Prather,

Richard Soref

Publication year - 2002

Publication title -

optics express

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.10.001048

Subject(s) - optical switch , materials science , optics , photonic crystal , conductance , optoelectronics , insertion loss , silicon photonics , silicon , coupling coefficient of resonators , finite difference time domain method , hexagonal lattice , photonics , resonator , physics , condensed matter physics , antiferromagnetism

We present an electro-optical switch implemented in coupled photonic crystal waveguides. The switch is proposed and analyzed using both the FDTD and PWM methods. The device is designed in a square lattice of silicon posts in air as well as in a hexagonal lattice of air holes in a silicon slab. The switching mechanism is a change in the conductance in the coupling region between the waveguides and hence modulating the coupling coefficient and eventually switching is achieved. Conductance is induced electrically by carrier injection or is induced optically by electron-hole pair generation. Low insertion loss and optical crosstalk in both the cross and bar switching states are predicted.

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