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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 16, Iss. 9 — Sep. 1, 1998
  • pp: 1570–

Simple Model of Optical Amplifier Chains to Evaluate Penalties in WDM Systems

Fabrizio Forghieri, R. W. Tkach, and D. L. Favin

Journal of Lightwave Technology, Vol. 16, Issue 9, pp. 1570- (1998)


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Abstract

A simple model to evaluate the penalty due to amplifier gainshape in a wavelength division multiplexing (WDM) optical system is proposed. The model requires only knowledge of the overall gain of the amplifier chain for all channels and provides signal-to-noise ratio (SNR) penalties for given launched powers. It also provides the input power distribution required for SNR equalization, and the associated SNR penalty, by solving an eigenvalue/eigenvector problem. The penalty predicted by the model agrees well with recent field measurements on a transoceanic cable. The model can also be applied to predict the gainshape of the amplifier chain from a measurement of the output noise spectrum with no input signal. The capacity of a long amplifier chain can thereby be determined from the receiving terminal only.

[IEEE ]

Citation
Fabrizio Forghieri, R. W. Tkach, and D. L. Favin, "Simple Model of Optical Amplifier Chains to Evaluate Penalties in WDM Systems," J. Lightwave Technol. 16, 1570- (1998)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-16-9-1570

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