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Improving the all-optical response of SOAs using a modulated holding signal

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3 Author(s)
Bischoff, S. ; Res. Center COM, Tech. Univ. of Denmark, Lyngby, Denmark ; Nielsen, M.L. ; Mork, J.

A method for increasing the all-optical modulation bandwidth of semiconductor optical amplifiers (SOAs) by use of a cross-gain-modulated (XGM) holding signal is suggested and analyzed. The bandwidth improvement is numerically demonstrated by studying wavelength conversion in an SOA-based Mach-Zehnder interferometer (MZI) at 160 and 40 Gb/s. The new scheme is predicted to improve the extinction ratio and the minimum mark output power, as well as to reduce the amplitude jitter of the wavelength converted signal.

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Lightwave Technology, Journal of  (Volume:22 ,  Issue: 5 )