Harmonie injection-locking behavior of frequency-detuned optical pulse in erbium-doped fiber laser
Journal
Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Journal Volume
43
Journal Issue
8 A
Pages
5204-5208
Date Issued
2004
Author(s)
Liao, Y.-S.
Abstract
The harmonic injection-locking dynamics of a gain-switched laser diode (GSLD) pulse-injection-locked Erbium-doped fiber amplifier-based laser (EDFL) are studied. Under GSLD injection with a pulsewidth and an average power of 17.6ps and 0.2 mW, respectively, at a repetition frequency corresponding to the 223rd harmonic (996.8635971 MHz) of the EDFL, the pulsewidth, peak power, and phase noise of the injection-locked EDFL are broadening from 34.3 ps to 130 ps, decreasing from 1.8 W to 500 mW, and increasing from -101.5 dBc/Hz to -86 dBc/Hz, respectively, as the repetition frequency detunes toward the injection-locking margin. The injection-locking range is from -13 kHz to +27 kHz. The peak power of the broadened pulses is greatly reduced to one third of that at the zero-detuning condition even with a detuning frequency of ±5 kHz. The injection-locked EDFL pulse-train eventually disappears as the repetition frequency of the GSLD detuned beyond the injection-locking bandwidth. The timing jitter of the GSLD harmonic injection-locked EDFL remains unchanged (<0.5 ps) within a positive detuning frequency of <25 kHz, which is less stable at a negatively frequency-detuned regime.
Subjects
Detuning frequency; Erbium-doped fiber laser; Gain-switched laser diode; Harmonic injection-locked
SDGs
Other Subjects
Bandwidth; Erbium; Injection lasers; Natural frequencies; Semiconductor doping; Semiconductor lasers; Switching; Detuning frequencies; Erbium-doped fiber lasers; Gain-switched laser diodes (GSLD); Harmonic injection-locking; Fiber lasers
Type
journal article