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Numerical simulation of ultra-compact electro-optic modulator based on nanoscale plasmon metal gap waveguides

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2 Author(s)
Inoue, S.-I. ; Inst. for Mater. Chem. & Eng., Kyushu Univ., Fukuoka, Japan ; Yokoyama, S.

An ultra-compact Mach-Zehnder (MZ) electro-optic (EO) modulator composed of nanoscale metal gap waveguides is numerically demonstrated. Propagation of surface plasmon polaritons in nano-size channels and their EO modulations is investigated by the finite-difference time-domain method considering the Lorentz-Drude model. The half-wave voltage (V pi) of the resulting MZ modulator for push-pull operation is 1.73 V using the interference arm with a sub-micron length (500-nm).

Published in:

Electronics Letters  (Volume:45 ,  Issue: 21 )