Rational harmonic mode-locking of Erbium-doped fiber laser at 40 GHz using a loss-modulated Fabry-P?rot laser diode
Journal
IEEE Photonics Technology Letters
Journal Volume
16
Journal Issue
8
Pages
1810-1812
Date Issued
2004
Author(s)
Abstract
Rational harmonic mode-locking of an Erbium-doped fiber ring laser (EDFL) at repetition frequency of 40 GHz is demonstrated by using a purely loss-modulated Fabry-Pe/spl acute/rot laser diode (FPLD) at 1 GHz. The FPLD is neither lasing nor gain-switching, which requires a threshold modulation power of 18 dBm to initiate harmonic mode-locking of the EDFL. After chirp compensation, the nearly transform-limited pulsewidth and spectral linewidth of 3 ps and 1.3 nm are obtained at repetition frequency of 40 GHz, which corresponds to a time-bandwidth product of 0.31. The EDFL gradually evolves from harmonic mode-locking to injection-locking mode as the FPLD changes from loss-modulation to gain-switching mode by increasing its dc driving current.
SDGs
Type
journal article