Abstract

Pairing high-quality factor $(Q)$ silicon-on-insulator microring resonators with rapidly tunable organic electrooptic claddings has allowed the first demonstration of a silicon-organic hybrid electrooptic reconfigurable optical add/drop multiplexer (ROADM). A coplanar electrode geometry provides up to 0.36 GHz/V of electrooptic voltage tuning for each channel, corresponding to an electrooptic coefficient of $r_{33}=64 \hbox{pm/V}$ at wavelengths around 1550 nm. Individual ring resonator devices have 40-$\mu{\hbox {m}}$ ring radii, 2.7-nm free spectral range, and tuning ranges of 180 GHz. The $1\times 4\times 1$ ROADM has a footprint of less than 1 ${\hbox {mm}}^{2}$ and has been shown to reconfigure in less than a microsecond.

© 2009 IEEE

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