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MLSE receiver tolerance to all-order polarization mode dispersion
Optics Express
|June 25, 2009
Summary
This study quantifies how maximum likelihood sequence estimation (MSLE) receivers handle polarization mode dispersion (PMD). First-order PMD poses a greater system penalty than higher orders, especially when differential group delay (DGD) is significant.
Area of Science:
- Optical communications
- Signal processing
Background:
- Polarization mode dispersion (PMD) degrades optical signal quality.
- Maximum Likelihood Sequence Estimation (MSLE) receivers are crucial for mitigating signal impairments.
Purpose of the Study:
- To experimentally assess the tolerance of MSLE receivers to first- and all-order PMD.
- To understand the impact of differential group delay (DGD) on PMD effects.
Main Methods:
- Experimental characterization of MSLE receiver performance under varying PMD conditions.
- Analysis of system penalties induced by first-order and high-order PMD.
Main Results:
- MSLE receiver response to first-order PMD varies with DGD.
- First-order PMD penalties are more significant than high-order PMD penalties.
- High-order PMD impact is substantial only when first-order penalties are minimal or DGD exceeds a bit period.
Conclusions:
- First-order PMD is the primary concern for MSLE receiver performance.
- System design must account for DGD to manage PMD-induced penalties effectively.
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