Title :
Optimal spectral and power parameters for all-optical wavelength shifting: single stage, fanout, and cascadability
Author :
Willner, Alan E. ; Shieh, William
Author_Institution :
Dept. of Electr. Eng. Syst., Univ. of Southern California, Los Angeles, CA, USA
fDate :
5/1/1995 12:00:00 AM
Abstract :
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
Keywords :
carrier density; laser noise; laser theory; optical frequency conversion; optical pumping; optical saturation; optical switches; semiconductor lasers; spectral line shift; all-optical wavelength shifting; cascadability; extinction ratios; fanout; figures-of-merit; gain saturation; gain-saturated semiconductor-optical-amplifier; injected carrier density; optical pumping; optimal spectral parameters; power parameters; signal-to-noise ratios; single stage; spectral shifting; wavelength-shifted signal; Bandwidth; Broadcasting; Charge carrier density; Extinction coefficients; Extinction ratio; High power amplifiers; Noise figure; Probes; Semiconductor optical amplifiers; Signal to noise ratio;
Journal_Title :
Lightwave Technology, Journal of
