[16p-K305-1~16] 3.13 Silicon photonics, Photonics-electronics convergence, Optical control

1:45 PM - 2:00 PM JST(4:45 AM - 5:00 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[16p-K305-2] Low-loss, low-power MOSCAP optical phase shifter using InP membrane waveguide

〇Hiroya Sakumoto¹, Tipat Piyapatarakul¹, Kasidit Toprasertpong¹, Shinichi Takagi¹, Mitsuru Takenaka¹ (1.The Univ. of Tokyo)

Keywords:

Silicon photonics,III-V semiconductor,Phase shifter

We propose a low-loss, low-power consumption MOS-type optical phase shifter operating on an InP membrane waveguide and demonstrate its operation on a ring resonator. By using a 700 nm thick cladding layer, we suppressed optical loss and utilized the large plasma dispersion effect of InP to obtain a phase shift by accumulating electrons on the surface of the InP membrane waveguide. From the resonance wavelength shift of the ring resonator, we demonstrated low-loss and low-power consumption optical phase shifter operation with a modulation efficiency of 1.9 V·cm, an optical loss of 0.48 dB/π, and a power consumption of less than 1 pW at an applied voltage of 5 V.