Title :
Hybrid Silicon Colliding-Pulse Mode-Locked Lasers With On-Chip Stabilization
Author :
Srinivasan, Sudharsanan ; Norberg, Erik ; Komljenovic, Tin ; Davenport, Michael ; Fish, Gregory ; Bowers, John E.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of California, Santa Barbara, Santa Barbara, CA, USA
Abstract :
We investigate the design of hybrid silicon colliding-pulse mode-locked laser diodes and the dependence on quantum well design. We show the reduction in microwave linewidth using two techniques. First, reducing the number of quantum wells reduces the confinement factor thereby lowering the spontaneous emission contribution to the linewidth. Second, a ~4-cm long on-chip feedback cavity is used to provide optical feedback to stabilize the laser and further reduce the linewidth. The linewidth achieved at 17.36 GHz using the above two techniques is 29 kHz.
Keywords :
elemental semiconductors; integrated optoelectronics; laser cavity resonators; laser feedback; laser mode locking; laser stability; microwave photonics; quantum well lasers; silicon; spontaneous emission; Si; confinement factor; frequency 17.36 GHz; hybrid silicon colliding-pulse mode-locked laser diodes; laser stabilization; microwave linewidth; on-chip feedback cavity; on-chip stabilization; optical feedback; quantum well design; spontaneous emission contribution; Cavity resonators; Laser feedback; Laser mode locking; Masers; Optical feedback; Semiconductor optical amplifiers; Colliding pulse mode-locking; Mode-locked lasers; Photonic integrated circuits; Semiconductor lasers; colliding pulse mode-locking; mode-locked lasers; photonic integrated circuits;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/JSTQE.2015.2432018
