METHOD FOR MAINTAINING THE COMPATIBILITY OF LEGACY OF RECEIVERS, OPTICAL DISTRIBUTING NETWORK STRUCTURE, AND PARTS THEREOF INCLUDING A METHOD FOR USING SUCH PART
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United States of America Patent
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Issued Date -
Dec 31, 2009
app pub date -
Apr 22, 2008
filing date -
Apr 25, 2007
priority date (Note) -
Abandoned
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Abstract
The invention relates to a method for maintaining the compatibility of legacy receivers in network termination units of an optical distributing network structure, especially in a passive optical network, when in the distributing network structure advanced receivers with a multiple of the data rate of the legacy receivers shall be operated too, in which signals for the advanced receivers are transmitted on the same wavelength and using the same physical paths as signals for the legacy receivers, in which, while transmitting signals for the advanced receivers at the same time also signals for the legacy receivers are transmitted, and in which the amplitude of the signals for the advanced receivers compared to the amplitude of the signals for the legacy receivers are chosen such that the signals for the advanced receivers do not block the legacy receivers in the receipt of the signals intended for them.
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