Multichannel Integrated Tunable Dispersion Compensator Employing a Thermooptic Lens

We present a new design for an integrated tunable dispersion compensator which can use low index-step waveguides, has low loss, is periodic with spacing 200 GHz, requires only one electrical drive signal, has a millisecond tuning time, and can be integrated with other functions. We also demonstrate the first silica thermooptic continuous lens.