Md. Saifuddin Faruk, Y. Mori, Chao Zhang, K. Igarashi, K. Kikuchi
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Second-order PMD monitoring from adaptive FIR-filter tap coefficients in a digital coherent receiver
We propose a straightforward algorithm to estimate second-order PMD from adaptive FIR-filter tap coefficients in a digital coherent optical receiver. The novel algorithm is verified with 100-Gbit/s dual-polarization QPSK experiments.