Optical Communication System for Wireless Radio Signals
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United States of America Patent
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Issued Date -
Nov 1, 2007
app pub date -
Dec 12, 2003
filing date -
Dec 13, 2002
priority date (Note) -
Abandoned
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Abstract
A method of transmission of radio signals over all types of graded-index multimode fibre is provided. The method comprises launching optical radiation into the core of the multimode fibre away from the centre of the core so as to strongly excite a subset of the available modes of the multimode fibre. The subset of modes excited are within a small number of mode groups and thus have similar propagation constants leading to a reduction in modal dispersion and modal interference and smoothing of the frequency response passband region beyond the fibres specified 3 dB base band bandwidth assisting RF transmission and recovery from this region.
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