One of the most promising technologies in optical networks is the use of wavelength-division multiplexing (WDM), in which many different-wavelength channels are simultaneously transmitted along the optical fiber. One key underlying technology which has enabled these systems is the introduction of the erbium-doped fiber amplifier EDFA. A glaring disadvantage of the EDFA is that the gain is not uniform with wavelength, causing a significant power and signal-to-noise ratio (SNR) differential among many channels. We will discuss our demonstrations of dynamically equalizing three 2.5 Gbit/s WDM channels in which the channel power differential is reduced from 20 dB to only 1 dB over a distance of 2,500 km by placing an acousto optical filter in an EDFA.


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    Title :

    Dynamic channel equalization in reconfigurable WDM networks using acousto-optic tunable filters


    Contributors:
    Willner, A.E. (author) / Huang, S.H. (author) / Zou, X.Y. (author) / Hwang, S.-M. (author) / Smith, D.A. (author) / Bao, Z. (author)


    Publication date :

    1996-01-01


    Size :

    257936 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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