Title :
Analysis and control of transient dynamics of EDFA pumped by 1480- and 980-nm lasers
Author :
Tian, Cechan ; Kinoshita, Susumu
Author_Institution :
Photonics Networking Lab., Fujitsu Network Commun. Inc., Richardson, TX, USA
Abstract :
The transient responses of Er-doped fiber amplifier (EDFA) to fast channel adding/dropping processes have been studied and analyzed. The result shows that the speed in which we can control EDFA with a feedback circuit is limited by the physical processes involved in the amplification. We demonstrated that with the combination of electrical feedforward and feedback, the power excursion caused by fast channel adding/dropping processes can be minimized.
Keywords :
erbium; optical communication equipment; optical feedback; optical fibre amplifiers; telecommunication channels; transients; wavelength division multiplexing; Er-doped fiber amplifier; control EDFA; electrical feedback; electrical feedforward; fast channel adding/dropping processes; feedback circuit; power excursion; transient dynamics; Erbium-doped fiber amplifier; Erbium-doped fiber lasers; Feedback circuits; Laser excitation; Laser feedback; Optical control; Optical feedback; Power amplifiers; Pump lasers; Transient analysis;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2003.815649
