posted on 2024-10-31, 17:38authored byMarcello Ferrera, Christian Reimer, Alessia Pasquazi, Marco Peccianti, Matteo Clerici, Lucia Caspani, Sai Chu, Brent Little, Roberto Morandotti, David Moss
We report an on-chip all-optical CMOS-compatible radio frequency spectrum analyzer with a bandwidth exceeding 2.5 THz, and use it to measure the intensity power spectra of mode-locked lasers with repetition rates up to 400 GHz.