A Fabry-Perot (F-P) etalon and a semiconductor optical amplifier (SOA) were combined to preprocess the data signals before clock recovery. With this technology in the 10-Gb/s clock recovery utilizing injection mode-locked laser (IMLL) based on SOA, the amplitude fluctuation and timing jitters caused by the pattern effect in recovered clock pulses were greatly reduced, experimentally. It also demonstrated that clock could be recovered from the very degraded signals.
© 2005 Chinese Optics Letters
(060.4510) Fiber optics and optical communications : Optical communications
(140.3520) Lasers and laser optics : Lasers, injection-locked
(250.5980) Optoelectronics : Semiconductor optical amplifiers
(320.7130) Ultrafast optics : Ultrafast processes in condensed matter, including semiconductors
Tong Wang, Caiyun Lou, Li Huo, and Yizhi Gao, "Novel approach to reduce the pattern effect in 10-Gb/s clock recovery," Chin. Opt. Lett. 2, 69-71 (2004)