THE EFFECT OF EXTERNAL OPTICAL FEEDBACK ON TIMING JITTER IN MODULATEDLASER-DIODES

Laser diodes with optical feedback are numerically modeled using singl e-mode rate equations. The effects of the optical feedback on the puls e turn-on delay and timing jitter are examined, for gain-switching, pe riodic and pseudorandom modulation formats. It is shown that there is a change in turn-on delay and a considerable increase in the timing ji tter due to the changes in the output power distributions as optical f eedback increases. The cause of the increased jitter is found to be th e additional intensity noise introduced by the optical feedback.