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{\hbox {Er}}^{3+}-{\hbox {Tm}}^{3+} -Codoped Tellurite Fiber Amplifiers for WDM Systems: A Theoretical Analysis of BER and Bandwidth

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3 Author(s)
Wenhui Xu ; State Key Lab. of Adv. Opt. Commun. Syst. & Networks,, Shanghai Jiao Tong Univ., Shanghai ; Yaming Lin ; Chun Jiang

WDM systems cascaded by Er3-Tm3+-codoped tellurite fiber amplifiers pumped by 800- and 980-nm lasers are analyzed for the first time in this paper. We use an amplifier model based on propagation and population-rate equations that are solved numerically using the Runge-Kutta algorithm and Newton's iterative method. In addition to analyzing the performance of the 800-nm pump, we also study the performance improvement after adding a new pump of 980 nm. With this new 980-nm pump, channels in the 1420-1620-nm wavelength region can reach a bit error rate (BER) less than 1times10-9, with a transmission distance of 400 km.

Published in:

Quantum Electronics, IEEE Journal of  (Volume:45 ,  Issue: 1 )

Date of Publication:

Jan. 2009

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