Title :
Clock recovery by a fiber ring laser employing a linear optical amplifier
Author :
Tangdiongga, E. ; Turkiewicz, J.P. ; Khoe, G.D. ; de Waardt, H.
Author_Institution :
Telecommun. Technol. & Electromagn. Group, Eindhoven Univ. of Technol., Netherlands
Abstract :
We report on subharmonic optical clock recovery (OCR) at 10 GHz from 160-Gb/s optical time-division multiplexed signals. The OCR circuit is based on a passively mode-locked principle in a fiber ring laser that utilizes fast gain dynamics of a linear semiconductor optical amplifier. To decrease the jitter amount in the clock pulse considerably, postelectrical signal processing is performed. The recovered clock is a 1.8-ps 10-GHz pulse train with 0.37 pulsewidth-bandwidth product.
Keywords :
erbium; laser cavity resonators; laser mode locking; optical fibre amplifiers; ring lasers; semiconductor optical amplifiers; signal processing; synchronisation; time division multiplexing; timing jitter; 1.8 ps; 10 GHz; 160 Gbit/s; EDFA; OCR circuit; SOA; clock pulse; clock recovery; erbium-doped fiber amplifier; fiber ring laser; gain dynamics; jitter; linear optical amplifier; optical time-division multiplexed signals; passively mode-locked laser; postelectrical signal processing; semiconductor optical amplifier; Clocks; Fiber lasers; Optical character recognition software; Optical fiber amplifiers; Optical pulses; Optical signal processing; Pulse amplifiers; Ring lasers; Semiconductor optical amplifiers; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2003.822222
