Briefly compare the polarization rotation speed of Mach-Zehnder interferometer, lithium crystal, LCD and
semiconductor optical amplifier (SOA), etc. Then propose a program of high-speed ternary optical multiplier based on
SOA’s nonlinear polarization rotation. Finally, the theoretical analysis and simulation research of SOA’s nonlinear
polarization rotation indicate that the ternary optical multiplier is one of the possible options to achieve high-speed
optical computing, and may be widely applied to optical computer.