Abstract
We modelled strong slow wave modulation enhancement in a rib corrugated waveguide with respect to a conventional rib waveguide, both embedded in a reverse biased pn junction. This enhancement is characterized in terms of effective index change versus reverse bias variations from 0V to -10V and for moderate group velocities varying in the range 0.02c to 0.15c. Interaction lengths and insertion losses below 750 microm and 3dB are respectively found for voltage variations in the range -8V to -10V. Furthermore, the device electrical modulation bandwidth is expected to be higher than 10 GHz.
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