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We exploit the polarization dependence of the Raman amplification to obtain a polarization pulling effect in telecommunication optical fibers. Experiments carried out with 1571 nm signal and copropagating high-power 1486 nm pump evidence the polarization pulling.
We present an effective solution for the upgrade of a highly dispersive link to POLMUX RZ-DQPSK 100-Gb/s transmission. Dispersion compensation is obtained by properly inserting a single polarization-insensitive phase-conjugation device along the link.
Spin profiles transferred into fibers during the drawing process are accurately determined by jointly exploiting an experimental cut-back method with a deterministic waveplate model. In particular, sinusoidal spin profiles are reconstructed, experimentally confirming the existence of a substantial discrepancy between the applied spin and the one actually frozen in the fiber
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