Sunday, July 11, 2010

Fujitsu and Indiana University Research Fiber Dispersion

Researchers form Fujitsu and Indiana University (IU) have found that Polarization Dependent Loss (PDL) in fiber, which previously had been considered a minor fiber impairment, can actually have a significant effect on 40 Gbps and 100 Gbps transmission capability. Indiana University provided Fujitsu with access to both buried and aerial fibers so PDL could be measured in a real-world setting.

Fujitsu and IU announced that theoretical and experimental research confirms the existence of Polarization Dependent Splice Loss (PDSL), and further research correlates PDSL and overall fiber connection loss to PDL.

The Indiana University Global Research Network Operations Center (IU Global NOC) provides engineering and operations services for IU's statewide fiber optic network, for leading high-performance research and education (R&E) networks, and for international connections to U.S. and global R&E networks, as well as support of grid operations. The IU Global NOC provided dark fiber, equipment, and support for the experiments.

For a copy of the research report, contact Motoyoshi Sekiya at

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