Experimental demonstration of dynamic network equalization of three 2.5-Gb/s WDM channels over 1000 km using acoustooptic tunable filters
- 1 September 1996
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 8 (9) , 1243-1245
- https://doi.org/10.1109/68.531850
Abstract
We have experimentally demonstrated the dynamic equalization of the nonuniform EDFA gain and WDM-network channel-power variations by using acoustooptic tunable filters (AOTF's) with active feedback. The AOTF's have multiple independent passbands and act as dynamic wavelength-dependent loss elements. After 1000 km transmission in a recirculating loop, the power differential is reduced from 20 dB to 1 dB for three 2.5-Gb/s WDM channels covering an 8-nm wavelength range, and a 10/sup -9/ BER can be achieved for all channels.Keywords
This publication has 14 references indexed in Scilit:
- Interchannel interference in multiwavelength operation of integrated acousto-optical filters and switchesJournal of Lightwave Technology, 1995
- Transmission of many WDM channels through a cascade of EDFA's in long-distance links and ring networksJournal of Lightwave Technology, 1995
- Circulating loop transmission experiments for the study of long-haul transmission systems using erbium-doped fiber amplifiersJournal of Lightwave Technology, 1995
- Multiwavelength fiber-amplifier cascades for networksPublished by Optica Publishing Group ,1994
- Optical power equalization for multiwavelength fiber-amplifier cascades using periodic inhomogeneous broadeningIEEE Photonics Technology Letters, 1993
- Gain-filtering stability in ultralong-distance linksPublished by Optica Publishing Group ,1993
- 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
- Propagation of signal and noise in concatenated erbium-doped fiber optical amplifiersJournal of Lightwave Technology, 1991