Abstract

Multisection DFB lasers showing high-speed self-pulsations (SP) have opened a new field for the optical clock recovery at high bit rates. The basic effect was discovered in 1992 with 2-section devices [1]. Since then, optimization of the devices led to much improvement and the system capability has been demonstrated [2]. The present generation of devices is AR-coated and consists of two DFB sections and one phase section integrated in between (Fig. 1). The two DFB sections are basically identical, only lengths and pump levels are different.

© 1999 Optical Society of America