Nonlinear phase shifts induced by semiconductor optical amplifiers with control pulses at repetition frequencies in the 40–160-GHz range for use in ultrahigh-speed all-optical signal processing
JOSA B, Vol. 19, Issue 11, pp. 2573-2589 (2002)
http://dx.doi.org/10.1364/JOSAB.19.002573
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Abstract
In a semiconductor optical amplifier (SOA) with copropagating optical pump pulses, the application of a nonlinear phase shift to optical signals provides the driving force for all-optical interferometric switching. We study, both analytically and experimentally, the dependencies of the nonlinear phase shift on the driving frequency (42–168 GHz) and on the SOA parameters. We have found that the nonlinear phase shift (ΔΦNL) decreases with the driving frequency but that this decrease is only linear, i.e., ΔΦNL∝f−1. We have also found that the nonlinear phase shift in the SOA linearly increases with the injection current (Iop), i.e., ΔΦNL∝Iop, even in this ultrahigh-frequency range.
© 2002 Optical Society of America
[Optical Society of America ]
OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(120.5060) Instrumentation, measurement, and metrology : Phase modulation
(190.5970) Nonlinear optics : Semiconductor nonlinear optics including MQW
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(320.7080) Ultrafast optics : Ultrafast devices
(320.7160) Ultrafast optics : Ultrafast technology
Citation
Yoshiyasu Ueno, Shigeru Nakamura, and Kazuhito Tajima, "Nonlinear phase shifts induced by semiconductor optical amplifiers with control pulses at repetition frequencies in the 40–160-GHz range for use in ultrahigh-speed all-optical signal processing," J. Opt. Soc. Am. B 19, 2573-2589 (2002)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-19-11-2573
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