The implementation of the all-optical wavelength-conversion (AOWC) function will be a key-feature in next-generation networks, as it could enable dynamic signal routing, wavelength reuse and path protection and restoration. At the same time, the use of differential-quadrature phase-shift-keying (DQPSK) modulation technique in combination with polarization multiplexing (POLMUX) is considered as the most promising candidate for the realization of high-bit-rate transmission links with a capacity of 100 Gb/s per wavelength and beyond. To our knowledge, only a few experiments [1] of POLMUX conversion are reported in literature and more recent results benefit of coherent detection and post-detection digital processing [2].

© 2009 IEEE

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