Jitter Measurements in Gain Switched DFB Semiconductor Lasers Coupled to Optical Fibers

Abstract

Time jitter measurements in a repeatedly gain switched laser diode subject to a weak optical feedback are reported in this work. Reflections were induced by the tip of an optical fiber placed at a very short distance (10 μm) from the output laser facet. The results point out the importance of controlling the reflections due to optical elements inside dense packaged devices.