Recovery dynamics of cross-modulated beam phase in semiconductor amplifiers and applications to all-optical signal processing

An analysis of the cross-phase modulation of a lightwave beam using a short optical pulse excitation is presented as a function of the saturation level of a semiconductor optical amplifier. The optical phase response is characterised by introducing a new recovery time parameter useful for the analys...

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Bibliographic Details
Published in:Optics communications 2001-08, Vol.195 (1), p.167-177
Main Authors: Gutiérrez-Castrejón, R., Occhi, L., Schares, L., Guekos, G.
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Optical communication systems, multiplexers, and demultiplexers
Optical computers, logic elements, interconnects, switches
neural networks
Optical data processing
Optical elements, devices, and systems
Optical fibre switches
Optical frequency conversion
Optics
Phase modulation
Physics
Semiconductor optical amplifiers
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Time-division multiplexing
Transmission and modulation (techniques and equipments)
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Summary:An analysis of the cross-phase modulation of a lightwave beam using a short optical pulse excitation is presented as a function of the saturation level of a semiconductor optical amplifier. The optical phase response is characterised by introducing a new recovery time parameter useful for the analysis of phase modulation-based applications. It is shown that, unlike the 10–90% recovery time, the parameter increases with amplifier saturation. A comparison through computer simulations between the operation characteristics of a wavelength converter and a time-division demultiplexer is carried out in the light of this parameter, which it is shown to be the limiting factor for fast operation of the latter device.
ISSN:0030-4018
1873-0310
DOI:10.1016/S0030-4018(01)01315-3