Experimental demonstration of active equalization and ASE suppression of three 2.5-Gb/s WDM-network channels over 2500 km using AOTF as transmission filters
- 1 March 1997
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 9 (3) , 389-391
- https://doi.org/10.1109/68.556083
Abstract
By using acoustooptic tunable filters with active feedback, we have experimentally demonstrated the dynamic channel-power equalization of the nonuniform EDFA gain as well as interchannel ASE suppression. The AOTF's have multiple independent passbands and act as dynamic wavelength-dependent loss elements. After 2500 km, the power differential is reduced from over 20 dB to /spl sim/1 dB for three 2.5-Gb/s WDM channels covering an /spl sim/8-nm wavelength range, and a 10/sup -9/ BER can be achieved for all channels.Keywords
This publication has 7 references indexed in Scilit:
- Experimental demonstration of dynamic network equalization of three 2.5-Gb/s WDM channels over 1000 km using acoustooptic tunable filtersIEEE Photonics Technology Letters, 1996
- Transmission of many WDM channels through a cascade of EDFA's in long-distance links and ring networksJournal of Lightwave Technology, 1995
- Over 25-nm, 16 wavelength-multiplexed signal transmission through four fluoride-based fiber-amplifier cascade and 440 km standard fiberPublished by Optica Publishing Group ,1994
- Equalization in amplified WDM lightwave transmission systemsIEEE Photonics Technology Letters, 1992
- Gain equalization multiwavelength lightwave systems using acoustooptic tunable filtersIEEE Photonics Technology Letters, 1992
- Erbium-doped fiber amplifier with flattened gain spectrumIEEE Photonics Technology Letters, 1991
- Integrated-optic acoustically-tunable filters for WDM networksIEEE Journal on Selected Areas in Communications, 1990