Open AccessTiming jitter reduction of passively mode-locked semiconductor lasers by self- and external-injection: Numerical description and experiments
Author(s) -
Lukas Drzewietzki,
Stefan Breuer,
Wolfgang Elsäßer
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.016142
Subject(s) - jitter , optics , semiconductor laser theory , reduction (mathematics) , laser , pulse (music) , physics , synchronization (alternating current) , phase noise , modulation (music) , spectral density , computer science , channel (broadcasting) , telecommunications , geometry , mathematics , detector , acoustics
In this paper the influence of different feedback (FB) and synchronization schemes on the timing phase noise (TPN) power spectral density (PSD) of a quantum-dot based passively mode-locked laser (MLL) is studied numerically and by experiments. The range of investigated schemes cover hybrid mode-locking, an opto-electrical feedback configuration, an all-optical feedback configuration and optical pulse train injection configuration by means of a master MLL. The mechanism responsible for TPN PSD reduction in the case of FB is identified for the first time for monolithic passively MLL and relies on the effective interaction of the timing of the intra-cavity pulse and the time-delayed FB pulse or FB modulation together with an statistical averaging of the independent timing deviations of both. This mechanism is quantified by means of simulation results obtained by introducing an universal and versatile simple time-domain model.