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Application of preemphasis to achieve flat output OSNR in time-varying channels in cascaded EDFAs without equalization
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SYSNO ASEP 0303779 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Application of preemphasis to achieve flat output OSNR in time-varying channels in cascaded EDFAs without equalization Author(s) Menif, M. (CA)
Rusch, L. A.
Karásek, Miroslav (URE-Y) RIDSource Title Journal of Lightwave Technology. - : Institute of Electrical and Electronics Engineers - ISSN 0733-8724
Roč. 19, č. 10 (2001), s. 1440-1452Number of pages 13 s. Language eng - English Country US - United States Keywords optical communication ; wavelength division multiplexing ; erbium ; optical fibre amplifiers Subject RIV BH - Optics, Masers, Lasers R&D Projects GA102/99/0393 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z2067918 - URE-Y Annotation We present a new method for optical signal-to noise ratio (OSNR) equalization of wavelength division multiplexed (WDM) channels at the end of a cascade of several erbium-doped amplifiers (EDFAs) by use of preemphasis, as well as the proper chice of EDFA design parameters. Identical OSNR at the end of the cascade ensures better signal detection and quality of service. The dynamics of the equalizing method have been demonstrated by simulation for single- and double-stage amplifier design. Workplace Institute of Radio Engineering and Electronics Contact Petr Vacek, vacek@ufe.cz, Tel.: 266 773 413, 266 773 438, 266 773 488 Year of Publishing 2002
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