Abstract
The cross phase modulation (XPM) has an important impact on today's high speed dense wavelength division multiplexing optical fiber communication systems. In order to obtain high conversion speed and strong non-linearity, semiconductor optical amplifier nonlinear optical loop mirror (SOA-NOLM) is operated with large bias current and high optical powers. In this paper, an investigation of XPM on the SOA-NOLM with reference to variable SOA's currents, speed and switching window is presented. Furthermore, signal induced phase shift dependence on bias current of the SOA and optimized loop parameters are also included.
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