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 3dB base band bandwidth assisting RF transmission and recovery from this region
申请公布号
AT393989(T)
申请公布日期
2008.05.15
申请号
AT20030767990T
申请日期
2003.12.12
申请人
UNIVERSITY COLLEGE LONDON;CAMBRIDGE ENTERPRISE LIMITED
发明人
SEEDS, ALWYN;WAKE, DAVID;PENTY, RICHARD;WEBSTER, MATTHEW;HARTMANN, PETER;WHITE, IAN