Title :
Nonlinear dynamics of optically injected self-pulsating laser diodes
Author :
Lim, C.G. ; Iezekiel, S. ; Snowden, C.M.
Author_Institution :
Sch. of Electron. & Electr. Eng., Leeds Univ., UK
fDate :
5/1/2001 12:00:00 AM
Abstract :
The behavior of a 1.55-μm InGaAsP distributed feedback (DFB) self-pulsating (SP) laser diode (LD) when injected with either unmodulated or modulated light from an external LD is investigated numerically. When subjected to weak injection of unmodulated light, the SP-LD exhibits mostly chaotic behavior with some regions of self-sustained-pulsations and multiple-peak periodic oscillations. As the strength of optical injection increases, the SP-LD transits from chaos to multiple-peak periodic oscillations followed by high-frequency self-oscillations before reaching an equilibrium state (i.e., a steady level). When injected with modulated light, the output of the SP-LD is dominated by either quasi-periodicity or chaos depending on the modulation current of the injected optical signal
Keywords :
III-V semiconductors; Q-switching; distributed feedback lasers; gallium arsenide; gallium compounds; indium compounds; laser beams; laser feedback; nonlinear optics; optical chaos; optical modulation; oscillations; semiconductor lasers; 1.55 mum; InGaAsP; InGaAsP laser; chaos; chaotic behavior; distributed feedback self-pulsating laser diode; equilibrium state; external laser diode; high-frequency self-oscillations; injected optical signal; modulated light; modulation current; multiple-peak periodic oscillations; nonlinear dynamics; optical injection; optically injected self-pulsating laser diodes; output; quasi-periodicity; self-sustained-pulsations; unmodulated light; Chaotic communication; Clocks; Diode lasers; Frequency shift keying; Laser stability; Nonlinear optics; Optical feedback; Optical modulation; Optical refraction; Optical variables control;
Journal_Title :
Quantum Electronics, IEEE Journal of
