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A Stable Ultrahigh Extinction Silicon Photonic Amplitude Modulator

Cai, Hong; Liu, Sheng; Pomerene, Andrew P.; Trotter, Douglas C.; Starbuck, Andrew L.; Dallo, Christina M.; Hood, Dana H.; DeRose, Christopher T.; Lentine, Anthony L.

We demonstrate the ultrahigh extinction operation of a silicon photonic (SiP) amplitude modulator (AM) employing a cascaded Mach-Zehnder interferometer. By carrying out optimization sweeps without significantly degrading the extinction, the SiP AM is robust to environment changes and maintained >52 dB extinction for >6 hrs.