Title :
Ultrafast graphene photodetector for on-chip broadband auto-correlator
Author :
Ren-Jye Shiue ; Yuanda Gao ; Hone, James ; Englund, Dirk
Abstract :
We report an integrated graphene photodetector on top of a silicon waveguide with a maximum responsivity of 0.36 A/W and a 3dB high-speed cut-off frequency of 42 GHz. Furthermore, nonlinear photocurrent in graphene under pulse excitation enables direct on-chip characterization of ultrafast pulses.
Keywords :
elemental semiconductors; graphene; graphene devices; high-speed optical techniques; integrated optoelectronics; optical waveguides; photoconductivity; photodetectors; silicon; C-Si; high-speed cut-off frequency; integrated graphene photodetector; nonlinear photocurrent; on-chip broadband autocorrelator; pulse excitation; silicon waveguide; ultrafast graphene photodetector; ultrafast pulses; Detectors; Graphene; Nonlinear optics; Optical waveguides; Photoconductivity; Photodetectors; Silicon;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2015 Conference on
Conference_Location :
San Jose, CA
