A Novel Scheme For Two-Level Stabilization of Semiconductor Mode-Locked Lasers Using Simultaneous Optical Injection and Optical Feedback
01 January 2013
We introduce a novel scheme for simultaneous reduction of time-bandwidth product and RF linewidth of quantum-dash two-section mode-locked lasers using optical injection-locking and selective optical feedback. The optical injection-locked laser double-locked with optical feedback showed chirp reduction by 2× and RF linewidth reduction from MHz range to few kHz. This stabilization technique is implemented in an all optical arrangement without a need to optical/electrical conversion in the feedback loop which is ideal for high repetition rate devices.