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Optical subcarrier label swapping by semiconductor optical amplifiers in cross phase modulation wavelength converter block

The semiconductor optical amplifier (SOA) can be used as an efficient high-speed modulator. The paper presents optical subcarrier multiplexed label swapping/reinsertion utilizing this device associated to the wavelength converter block in packet switched all optical networks. For that purpose the modulation response and nonlinear behavior of SOAs are analyzed and experimentally demonstrated.