Noise character analysis and the restraint of self-pulsation laser diodes

Abstract:

We calculate the Langevin noise sources of self-pulsation laser diodes,analyze the effects of active region noise and saturable-absorption region noise on the power fluctuation as well as period fluctuation,and propose a novel method to restrain the noise effects.A visible SIMULINK model is established to simulate the system,The results indicate that the effects of noise in absorption region can be ignored; that with the increase of DC injecting current,the noise effects enhance power jitter,and nevertheless,the period jitter is decreased; and that with external sinusoidal current modulating the selfpulsation laser diode,the noise-induced power jitter and period jitter can be suppressed greatly.This work is valuable for clock recovery in all-optical network.

Key words:laser diodes;restraint;analysis;character;network;clock recovery;external;injecting current;jitter;increase;results;absorption region;visible;SIMULINK;model;established;simulate;system;novel;method