200-Gb/s wavelength conversion using a delayed-interference all-optical semiconductor gate assisted by nonlinear polarization rotation

A method of developing frequency encoded multi-bit optical data comparator using semiconductor optical amplifier

“…This has led to develop new and innovative optical logic circuits for use in these systems, including optical comparators. Very recently, computation and communications with ultra high bandwidth approach 200 GB per second or more being implemented by transmitting the information as optical signals, typically in the form of optical packets of information across the network [1][2][3][4]. In this context the paper presented by Martinez et al [5] exploiting the cascaded SOA-MZI structures for designing two n-bit optical comparator or the work presented by Yasui et al [6] exploiting differential spin excitation in semiconductor multiple quantum wells may be mentioned.…”

Study of the dynamics of the nonlinear polarization rotation in a semiconductor optical amplifier

“…Recently, some research groups have utilized the NPR for demonstrating ultrafast all-optical signal processing. For instance in [3 ], the NPR was used in order to assist the behavior of a wavelength converter operating to 200 Gb/s. Despite this and other experimental demonstrations, the maximum theoretical frequency at which the NPR can respond not yet has been clearly determined.…”