Title :
Bit correlation and memory effects in high-speed pump modulation of a fiber laser
Author :
Garreau, J.C. ; Wang, Peng-Ye ; Glorieux, P.
Author_Institution :
Lab. de Spectrosc. Hertzienne, Univ. des Sci. et Tech. de Lille Flandres Artois, Villeneuve d´´Ascq, France
fDate :
4/1/1994 12:00:00 AM
Abstract :
In the context of optical communications, we study experimentally the behavior of a pump-modulated fiber laser at frequencies close to the relaxation oscillation frequency. We show that correlations can appear between successive “1” bits in various situations. This “memory effect” can be interpreted using a simple deterministic model, and we show that this effect is related to the behavior of the population inversion, which does not follow adiabatically the photon number. Our results also suggest the existence of an optimum pump bias value for optical communications, slightly below threshold
Keywords :
fibre lasers; high-speed optical techniques; optical communication equipment; optical correlation; optical modulation; optical pumping; population inversion; bit correlation; high-speed pump modulation; memory effects; optical communications; optimum pump bias value; photon number; population inversion; pump-modulated fiber laser; relaxation oscillation frequency; simple deterministic model; Fiber lasers; Frequency; Laser excitation; Laser noise; Laser theory; Optical fiber communication; Optical pulses; Pulse modulation; Pump lasers; Spontaneous emission;
Journal_Title :
Quantum Electronics, IEEE Journal of
