“Scientists break high speed light modulation record — Twice” : Science Daily
“Han Wui Thenworks to create faster, cheaper network technology”: Illinois ECE Headline News
Publication download link: Applied Physics Letters
“4.3 GHz optical bandwidth light emitting transistor”
G. Walter, C. H. Wu, H. W. Then, M. Feng, and N. Holonyak, Jr., Appl. Phys. Lett. 94, 241101 (2009)