SOA-Based Actively Mode-Locked Fiber Ring Laser by Forward Injecting an External Pulse Train

Shuangyi Yan, Jian-Guo Zhang, Wei Zhao

Research output: Contribution to journalArticle (Academic Journal)peer-review

Abstract

An actively mode-locked fiber ring laser based on cross-gain modulation (XGM) in a semiconductor optical amplifier (SOA) is demonstrated to operate stably with a simple configuration. By forward injecting an easily-generated external pulse train, the mode-locked fiber laser can generate an optical-pulse sequence with pulsewidth about 6 ps and average output power about 7.9 mW. The output pulses show an ultra-low RMS jitter about 70.7 fs measured by a RF spectrum analyzer. The use of the proposed forward-injection configuration can realize the repetition-rate tunability from 1 to 15 GHz for the generated optical-pulse sequences. By employing a wavelength-tunable optical band-pass filter in the laser cavity, the operation wavelength of the designed SOA-based actively mode-locked fiber laser can be tuned continuously in a wide span between 1528 and 1565 nm. The parameters of external-injection optical pulses are studied experimentally to optimize the mode-locked fiber laser.
Original languageEnglish
Pages (from-to)87-92
Number of pages6
JournalOptics Communications
Volume283
Issue number1
DOIs
Publication statusPublished - 1 Jan 2010

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