Experimental demonstration of dynamic equalization of three 2.5-Gbit/s WDM channels over 1000 km using acousto-optic tunable filters

Author

Huang, S.H. ; Zou, X.Y. ; Hwang, S.-M. ; Willner, A.E. ; Bao, Z. ; Smith, D.A.

Author_Institution

Dept. of Electr. Eng., Univ. of Southern California, Los Angeles, CA, USA

fYear

1996

fDate

25 Feb.-1 March 1996

Firstpage

186

Lastpage

188

Abstract

We demonstrate experimentally the dynamic equalization of the nonuniform EDFA gain by using acoustic-optic tunable filters with active feedback. After 1000 km transmission in a recirculating-loop experiment, the maximum power differential is reduced from 20 dB to 1 dB for three 2.5-Gbit/s WDM channels covering an 8-nm wavelength range. The active feedback is verified and ensures proper system performance when the power of any individual channel varies over time, as is likely in a dynamically-reconfigurable WDM network.

Keywords

acousto-optical filters; fibre lasers; optical feedback; optical fibre networks; tuning; wavelength division multiplexing; 1000 km; 2.5 Gbit/s; 8-nm wavelength range; WDM channels; acousto-optic tunable filters; active feedback; dynamic equalization; dynamically-reconfigurable WDM network; maximum power differential; nonuniform EDFA gain; power; recirculating-loop experiment; system performance; Bit error rate; Brillouin scattering; Broadcasting; Erbium-doped fiber amplifier; Laser noise; Multimedia communication; Optical filters; Optical receivers; Preamplifiers; Wavelength division multiplexing;

fLanguage

English

Publisher

ieee

Conference_Titel

Optical Fiber Communications, 1996. OFC '96

Print_ISBN

1-55752-422-X

Type

conf

DOI

10.1109/OFC.1996.908212

Filename

908212