A Highly Flexible Polarization Demultiplexing Scheme for Short-Reach Transmission


We tend to propose and experimentally demonstrate an efficient and highly versatile polarization demultiplexing theme based on a Stokes analyzer, which might be additionally applied to the nonorthogonal polarization division multiplexing (NPDM) schemes. Compared with the standard direct detection, the proposed technique has higher tolerance to the polarization-dependent loss. Furthermore, such an approach can considerably enhance system flexibility without increasing value and complexity since the transmitted signals are not needed to take care of strict orthogonality, and no extra polarization-tracking feedback circuit is required. Experimental results show that any polarization multiplexing degree that is larger than twenty three° will be adaptively demultiplexed after ten-km transmission using optical orthogonality monitoring and digital-signal-processing (DSP) algorithms.

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