Abstract
Practical, high-speed optical communication systems require stable, wavelength-tunable, high-speed optical signal generators. Dispersion-tuned harmonically mode-locked fiber ring lasers (HMLFRLs) have been proved to be able to achieve high repetition rate and smooth wavelength tuning.1,2 However, harmonic mode locking often causes supermode noise (SMN).3 Several methods have been proposed to suppress the SMN.4–6 But either high optical power or a complex electro-mechanical feedback system is required for these approaches.
© 2002 Optical Society of America
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