Gain Equalization by Mitigating Self-Filtering Effect in a Chain of Cascaded EDFA's for WDM Transmissions

Jinghui Li, Farideh Khaleghi, Mohsen Kavehrad

    Research output: Contribution to journalArticle

    4 Scopus citations

    Abstract

    A simple method of alternatively using high-inversion and moderate-inversion erbium-doped fiber amplifiers (EDFA's) in an optical amplifier chain is presented to mitigate the self-filtering effect and equalize both signal power and signal-to-noise ratio (SNR) of multiple wavelength channels in wavelength-division multiplexing (WDM) transmission systems. The performance of the compensated system with alternatively used high-and moderate-inversion amplifiers is compared with the uncompensated ones where only moderate-or high-inversion amplifiers are employed. The result shows that the compensated system has a flatter gain profile, a lesser signal power spread, and SNR degradation.

    Original languageEnglish (US)
    Pages (from-to)2191-2196
    Number of pages6
    JournalJournal of Lightwave Technology
    Volume13
    Issue number11
    DOIs
    StatePublished - Nov 1995

    All Science Journal Classification (ASJC) codes

    • Atomic and Molecular Physics, and Optics

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