Journal article
Clock recovery challenges in DSP-based coherent single-mode and multi-mode optical systems
We present an analysis of clock recovery algorithms in both polarization division multiplexing systems and mode division multiplexing systems. The impact of inter-polarization time skew and polarization mode dispersion in single-mode fibers, as well as the combined impact of mode mixing and mode group delay spread in multi-mode fibers under different coupling regimes are investigated.
Results show that although the clock tone vanishing has a known solution for single-mode systems, in multi-mode systems even for low group delay spread, strong coupling will cause clock tone extinction, making it harder to implement an effective clock recovery scheme.
Language: | English |
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Publisher: | MDPI AG |
Year: | 2018 |
Pages: | 59 |
ISSN: | 19995903 |
Types: | Journal article |
DOI: | 10.3390/fi10070059 |
ORCIDs: | Da Ros, Francesco , Medeiros Diniz, Júlio César and Zibar, Darko |