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Ultrafast optical time demultiplexers using semiconductor optical amplifiers

Kang, K.I. and Glesk, Ivan and Prucnal, P.R. (1996) Ultrafast optical time demultiplexers using semiconductor optical amplifiers. International Journal of High Speed Electronics and Systems, 7 (1). pp. 125-151. ISSN 0129-1564

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The operating principle of the utilization of resonant optical nonlinearities in recently demonstrated ultra-fast all-optical interferometric switching devices is presented. Optimum switching windows expected from these devices are investigated with a simple theoretical analysis. The experimental results of these devices are presented along with the nonlinear optical properties of a semiconductor optical amplifier. The information from the experimental results of the nonlinear optical properties are used to address a problem associated with a saturation of the semiconductor optical amplifier by an incoming ultra-high bit rate data stream. We also discuss the advantages and disadvantages in different operation modes — same or different wavelengths for the control and data signals. Finally, we discuss the relative advantages and disadvantages among these devices.