Title :
All-optical synchronization and multiplication of the frequency of mode-locked signals
Author :
Phelan, Paul ; Farrell, Gerald ; Hegarty, John
Author_Institution :
Dept. of Phys., Trinity Coll., Dublin, Ireland
Abstract :
The authors report all-optical synchronized multiplication by rational fractions of the modulation frequency of optical signals in self-pulsing two-section semiconductor laser diodes. The effect is based on the overlap of harmonics of the input signal with harmonics of the self-pulsation. This new generic function is illustrated with mode-locked inputs rich in harmonics, where fractions of 1, 2, and 3/2 are generated, and a number of applications for this effect are identified.<>
Keywords :
laser mode locking; optical modulation; semiconductor lasers; all-optical synchronized multiplication; generic function; input signal; mode-locked inputs; mode-locked signals; modulation frequency; optical signals; rational fractions; self-pulsation harmonics; self-pulsing two-section semiconductor laser diodes; signal harmonics overlap; Clocks; Distributed Bragg reflectors; Electrons; Frequency modulation; Frequency synchronization; Laser mode locking; Laser modes; Laser theory; Optical fiber polarization; Tunable circuits and devices;
Journal_Title :
Photonics Technology Letters, IEEE
