Silica-on-silicon planar lightwave circuit (PLC) technology is well established and provides a low loss and stable photonic device platform. However, limitations in size and integration of active components remain. Engineering of the layer structure in silica PLCs to achieve high-index contrast, compact device architectures and monolithically integrated optical nonlinearities is described. Modeling of properties of doped-silica layers provides a design strategy for optimization of waveguide loss and birefringence. Optical nonlinearities in poled silica layers have been demonstrated, and recent work to incorporate these into functional device structures and exploit them for high speed modulation is reported.

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Keywords Doped silica, Modulators, Multilayers, Optical nonlinearities, Planar lightwave circuits, Silica-on-silicon
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Conference Optical Components and Materials IX
Callender, C.L., Dumais, P., Blanchetiere, C., Jacob, S., Ledderhof, C., Smelser, C, … Albert, J. (2012). Compact silica-on-silicon planar lightwave circuits for high speed optical signal processing. Presented at the Optical Components and Materials IX. doi:10.1117/12.907443