High-Bandwidth POF

The maximum bandwidth, 100 GHz for 100 m, was theoretically obtained when g was almost 2.0 if only the modal dispersion was considered. However, large discrepancies were observed between the calculated and measured bandwidths. In contrast, the relation between the bandwidth and the profile exponent of PMMA-based GI POFs was accurately estimated by the Wentzel-Kramers-BrUlouin method when all the dispersion factors were taken into account. 

The calculated maximum bandwidth at p, was dramatically reduced owing to the large material dispersion of PMMA when all types of dispersion were considered. A significant decrease in bandwidth was observed mainly for profile exponents near the value. When the profile exponent deviates greatly from p, material dispersion has little effect on the bandwidth because of the dominant large modal dispersion. 

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With various improvements in the fabrication process enabling the avoidance of contaminants and the formation of Gl profiles, low-loss and high-bandwidth POFs have become leading candidates for short-distance networks (e.g.. 

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