Broadband Si-on-LiNbO3 Modulator with Low Insertion Loss and High Slope Efficiency

A novel broad-bandwidth modulator is proposed that has the potential for achieving low switching voltage in conjunction with low optical insertion loss. This is in stark contrast to conventional modulator designs that typically offer lower switching voltage only at the expense of higher insertion loss. Combining this novel modulator with a commercial diode laser is estimated to achieve a modulation slope efficiency of ~ 10 W/A. In Phase I Photonic Systems, Inc. will analyze and optimize the novel modulator geometry. Key parameters will be confirmed via measurements on a phase modulator that will also be fabricated as part of Phase I. Phase II will extend the novel modulator concept to the implementation of an intensity modulator with a bandwidth of 20 GHz.