Title :
"Rational harmonic mode-locking" in a phase-modulated fiber laser
Author :
Yang, Shiquan ; Bao, Xiaoyi
Author_Institution :
Dept. of Phys., Univ. of Ottawa, Ont.
fDate :
6/1/2006 12:00:00 AM
Abstract :
The repetition rate multiplication was observed in a phase-modulated mode-locking fiber laser when the modulation frequency was detuned by a fraction of the fundamental frequency. This phenomenon is quite similar to the rational harmonic mode-locking in amplitude modulated lasers, which almost everybody believed could not exist when applying phase modulation. The harmonics of the amplified driving signal is the reason behind this phenomenon. Because most RF amplifiers cannot avoid generating high-order harmonics of the amplifying signal, the "rational harmonic mode-locking" can be obtained in most phase-modulation fiber lasers when the driving signal is amplified, even in some cases when using linear amplifiers
Keywords :
fibre lasers; laser mode locking; optical communication equipment; optical modulation; phase modulation; amplitude modulated lasers; fiber laser; phase modulation; rational harmonic mode-locking; repetition rate multiplication; Amplitude modulation; Fiber lasers; Frequency modulation; Laser mode locking; Optical fiber communication; Optical pulses; Phase modulation; Pulse amplifiers; Pulse modulation; Radiofrequency amplifiers; Electrical amplifier; fiber laser; frequency detuning; mode-locking laser; phase modulation;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.876742
