[19p-E206-1~19] 3.15 Silicon photonics

[19p-E206-7] [Highlight] Study on Electro-Absorption Optical Modulator, Using Ge/Si Rib Waveguide III

〇Junichi Fujikata¹, Masataka Noguchi¹, Kazuki Kawashita², Katamawari Riku², Hideki Ono¹, Daisuke Shimura¹, Hiroyuki Takahashi¹, Hiroki Yaegashi¹, Yasuhiko Ishikawa², Takahiro Nakamura¹ (1.PETRA, 2.Toyohashi Univ. Tech.)

Keywords:Ge electro-absorption modulator, Franz-Keldysh effect

We studied on an electro-absorption optical modulator, using a Ge/Si rib waveguide. We analyzed the relationship between C and L wavelength band operation and crystalline quality of a Ge layer. We also demonstrated high-speed optical modulation of 56 Gpbs.