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21 April 2006 Sources and levels of crosstalk in a bi-directional plastic optical fibre data transmission link
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Abstract
An analysis is presented of the sources and levels of crosstalk between the two signals propagating in opposite directions on a bi-directional plastic fibre link. Contributions to crosstalk from limits on the directivity of a new POF directional coupler and Rayleigh backscattering from the POF fiber are considered individually. The measured directivity of the coupler is 37.3 dB, better than any previous POF directional coupler. It is shown both theoretically and experimentally that Rayleigh generated crosstalk decreases with the increasing fiber length and that the level reaches a limit value circa 28.5 dB (below the input fiber level) when fiber length exceeds 36.5 meters.
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Gerald Farrell and Cheng Gao "Sources and levels of crosstalk in a bi-directional plastic optical fibre data transmission link", Proc. SPIE 6198, Photonics in the Automobile II, 61980C (21 April 2006); https://doi.org/10.1117/12.662820
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