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Novel method for measuring nonlinear coefficient in optical fibers based on phase mismatching four-wave-mixing is proposed. With simple setup, we demonstrate measurements for both high nonlinearity dispersion-shifted fiber and low nonlinearity standard SMF.
The phase shift induced by intra-channel cross-phase modulation in an optical RZ pulse is analyzed by the use of perturbation method and its validity is shown by comparing with recirculating loop experiment over 1000 km.
We experimentally investigate a dispersion tolerance of transmitted OOK signal for all-optical OOK/BPSK modulation format conversion using cross-phase modulation in optical fiber.
We theoretically study the phase jitter in different dispersion-managed transmission lines having equal path-averaged dispersion. We find that the enhanced energy due to increase of dispersion difference in a period increases the nonlinear phase jitter.
We investigate the phase noise in quasi-linear optical transmission system with periodic dispersion compensation and amplification. We find that stronger dispersion managed quasi-linear pulse yields lower phase noise. The analytical results obtained are verified by numerical simulations.
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