Lo, Mu ChiehGuzmán Martínez, Robinson CruzoeAli, MuhsinSantos, RuiAgustin, LucCarpintero del Barrio, Guillermo2017-09-252018-09-252017-09-25Optics Letters, 2017, 42 (19), pp. 3872-3875.0146-9592https://hdl.handle.net/10016/25318We report on an optical frequency comb with 14 nm (∼1.8 THz) spectral bandwidth at a −3 dB level that is generated using a passively mode-locked quantum-well laser in photonic integrated circuits fabricated through an InP generic photonic integration technology platform. This 21.5-GHz colliding-pulse mode-locked laser cavity is defined by on-chip reflectors incorporating intracavity phase modulators followed by an extracavity semiconductor optical amplifier as a booster amplifier. A 1.8-THz-wide optical comb spectrum is presented with an ultrafast pulse that is 0.35 ps wide. The radio frequency beat note has a 3-dB linewidth of 450 kHz and 35-dB SNR.4application/pdfeng© Optical Society of America (OSA), 2017Mode-locked lasersSemiconductor lasersPhotonic integrated circuitsresearch articleElectrónicahttp://dx.doi.org/10.1364/OL.42.003872open access3872193875Optics Letters42AR/0000020350