Taper-less III-V/Si Hybrid MOS Optical Phase Shifter using Ultrathin InP Membrane
Shuhei Ohno, Qiang Li, Naoki Sekine, Junichi Fujikata, Masataka Noguchi, Shigeki Takahashi, Kasidit Toprasertpong, Shinichi Takagi, Mitsuru Takenaka · 2020
We present proof-of-concept taper-less III-V/Si hybrid MOS optical phase shifter. An ultrathin InP membrane enables low insertion loss despite no taper, with keeping high modulation efficiency owing to strong electron confinement at the MOS interface.