Recent advances in developing nonlinear optical techniques for processing serial digital
information at high speed are reviewed. The field has been transformed by the advent of …

Semiconductor optical amplifiers are useful building blocks for all-optical gates as
wavelength converters and OTDM demultiplexers. The paper reviews the progress from …

Julian Jones studied physics at the University of Wales, Aberystwyth, where he gained his
BSc and, in 1980, a PhD on the plasma chemistry of excimer lasers. After a brief period as a …

We present a 1× 2 all-optical packet switch. All the processing of the header information is
carried out in the optical domain. The optical headers are recognized by employing the two …

We demonstrate error-free wavelength conversion at 320 Gb/s by employing a
semiconductor optical amplifier that fully recovers in 56 ps. Error-free operation is achieved …

An all-optical logical AND gate at 10 Gbit/s based on cross-gain modulation (XGM) in two
cascaded semiconductor optical amplifiers (SOAs) is demonstrated. Single-port-coupled …

Error-free and pattern-independent wavelength conversion at 160 Gb/s is demonstrated.
The wavelength converter utilizes a semiconductor optical amplifier (SOA) with a recovery …

We discuss an all-optical wavelength converter based on nonlinear polarization rotation in a
single semiconductor optical amplifier. We show that inverted and noninverted wavelength …

100 Gbit/s All-Optical Wavelength Conversion with an Integrated SOA Delayed-Interference
Configuration Page 1 100 Gbit/s All-Optical Wavelength Conversion with an Integrated SOA …

This article reviews the current status and technologies of all-optical XOR gates. Various
schemes with semiconductor optical amplifiers, particularly those associated with …