Sub-picosecond all-optical switch using a multi-quantum-well semiconductor optical amplifier

Sub-picosecond all-optical switch using a multi-quantum-well semiconductor optical amplifier

We investigate an all-optical switch that is operated by the nonlinear phase-shift introduced by optical pulses with duration of 200 fs in a semiconductor optical amplifier (SOAs). The gate is made out of a commercially available InGaAsP–InGaAs multi-quantum-well (MQW) SOA placed in a Mach–Zehnder interferometer. We have measured the nonlinear phase-shift as a function of the injection current ...

All-Optical Switching of Picosecond Pulses by Four-Wave Mixing in a Semiconductor Optical Amplifier

High-speed all-optical switching is demonstrated by four-wave mixing (FWM) of picosecond pulses using semiconductor optical amplifiers (SOA). A light source for measurement and switching in the 1.5 μm region is produced using a normal group velocity dispersion fiber and optical parametric oscillator. The output supercontinuum (SC) optical pulses, with a spectral width of approximately 300 nm, a...

All-optical logic gates using a semiconductor optical amplifier assisted by an optical filter

A simple all-optical logic device, composed of an SOA and an optical filter, is proposed. By utilizing optical filtering, multi-logic functions (AND, OR and XOR) are demonstrated at 10 Gb/s using the same setup, under different operation conditions. Simulations indicate that the device can operate at much higher bit rate. Introduction: All-optical logic gates have received considerable attentio...

All-optical logic gates using semiconductor optical amplifier assisted by optical filter

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Efficient Optical Phase modalation using A Semiconductor Optical Amplifier