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Optimal spectral and power parameters for all-optical wavelength shifting: single stage, fanout, and cascadability

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2 Author(s)
Willner, A.E. ; Dept. of Electr. Eng. Syst., Univ. of Southern California, Los Angeles, CA, USA ; Shieh, W.

We analyze a gain-saturated semiconductor-optical-amplifier (SOA) all-optical wavelength shifter with respect to its spectral and power characteristics as well as its capability for high fanout and cascadability. The extinction and signal-to-noise ratios, the two main figures-of-merit for a wavelength-shifted signal, are determined by accounting for gain saturation and spectral shifting which occur due to the depletion of the injected carrier density

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Lightwave Technology, Journal of  (Volume:13 ,  Issue: 5 )