All-optical technique for modulation format conversion from on-off-keying to alternate-mark-inversion

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Dailey, James M.
Webb, Rod P.
Manning, Robert J.
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Optical Society of America
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We propose and numerically investigate for the first time a novel all-optical on-off-keying to alternate-mark-inversion modulation format converter operating at 40 Gbps employing a semiconductor optical amplifier (SOA)-based Mach-Zehnder interferometer (MZI). Wedemonstrate that this SOA-MZI operates as a pulse subtractor, and in the absence of patterning will produce perfectly phase inverted pulses regardless of the individual SOA phase excursions. We use a comprehensive computer model to illustrate the impact of patterning on the output phase modulation which is quantified through the definition of the phase compression factor.
Semiconductor optical amplifiers , All-optical devices , Modulation , Nonlinear optical signal processing
Dailey, J.M., Webb, R.P., Manning, R.J. (2010) 'All-optical technique for modulation format conversion from on-off-keying to alternate-mark-inversion'. Optics Express, 18 (21):21873-21882. doi: 10.1364/OE.18.021873
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