Silicon-integrated nonlinear III-V photonics

• DOI: 10.1364/prj.446898
• Publication Date: 2021-12-21T21:01:08Z
• Authors: Weiqiang Xie; Chao Xiang; Lin Chang; Warren Jin; Jonathan Peters; John E. Bowers
• Keywords: 0301 basic medicine; 0303 health sciences; 03 medical and health sciences; 7. Clean energy

Mainstream silicon photonic integrated circuits are based on compact and low-loss silicon-on-insulator (SOI) waveguide platforms. However, monolithic SOI-based photonics provides only a limited number of functional device types. Here, to extend the on-chip capabilities, we propose general heterogeneous integration approach embed highly nonlinear III-V (AlGaAs) into SOI platform. We develop AlGaAs-on-SOI with Si waveguides showcase sub-milliwatt-threshold ( <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="m1"> <mml:mrow> <mml:mo form="prefix">∼</mml:mo> <mml:mn>0.25</mml:mn> <mml:mtext> </mml:mtext> <mml:mi>mW</mml:mi> </mml:mrow> </mml:math> ) Kerr frequency comb generation in ultrahigh- id="m2"> <mml:mi>Q</mml:mi> AlGaAs microrings id="m3"> over id="m4"> <mml:msup> <mml:mn>10</mml:mn> <mml:mn>6</mml:mn> </mml:msup> at telecom bands. Our demonstration complements existing mature technology efficient functionalities provided by propels conventional emerging applications towards fully chip-based engines.