Mid-IR supercontinuum generated in low-dispersion Ge-on-Si waveguides pumped by sub-ps pulses

作者：Yang, Minghui; Guo, Yuhao; Wang, Jing; Han, Zhaohong; Wada, Kazumi; Kimerling, Lionel C.; Agarwal, Anuradha M.; Michel, Jurgen; Li, Guifang; Zhang, Lin^*

来源：Optics Express, 2017, 25(14): 16116-16122.

DOI：10.1364/OE.25.016116

• MU-M
• SILICON
• FIBER
• WAVELENGTHS
• GERMANIUM

Ge-on-Si is an attractive material platform for mid-IR broadband sources on a chip because of its wide transparency window, high Kerr nonlinearity and CMOS compatibility. We present a low-loss Ge-on-Si waveguide with flat and low dispersion from 3 to 11 mu m, which enables a coherent supercontinuum from 2 to 12 mu m, generated using a sub-ps pulsed pump. We show that 700-fs pump pulses with a low peak power of 400 W are needed to generate such a wide supercontinuum, and the waveguide length is around 5.35 mm.

• 出版日期2017-7-10
• 单位天津大学