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High-resolution measurement and spectral overlap of cross-phase modulation induced spectral broadening

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4 Author(s)
Keang-Po Ho ; Dept. of Inf. Eng., Chinese Univ. of Hong Kong, Shatin, China ; Haito Yu ; Lian-Kuan Chen ; Tong, Frank

Cross-phase modulation induced spectral broadening in WDM systems is measured using a high-resolution optical spectrum analyzer. The measured spectra are consistent with recently developed theoretical models. Using the theoretical models, the spectral overlap between two adjacent WDM channels is estimated for a typical 10-Gb/s system having 50 GHz of channel spacing. For -20 dB overlap, the product of number of fiber spans and optical power per channel must be less than 18.1 and 15.5 dBm for standard and nonzero-dispersion-shifted fiber, respectively.

Published in:

Photonics Technology Letters, IEEE  (Volume:12 ,  Issue: 11 )

Date of Publication:

Nov. 2000

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