Channel balancing of a wavelength division multiplexed optical signal
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United States of America Patent
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Nov 21, 2006
Grant Date -
Jun 8, 2006
app pub date -
Dec 28, 2000
filing date -
Dec 28, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to methods and arrangements for channel balancing of a wavelength division multiplexed optical signal. Channel balancing according to the invention is performed by using a resonator that provides a selection region in which a selected channel has a substantially increased poser density relative to channels out of resonance. The selected channel is attenuated a desired amount, i.e. a desired amount of power is removed therefrom, by adjusting the properties of the selection region. In a preferred embodiment, attenuation is achieved by adjusting the selection region such that destructive interference is obtained for the selected channel in a fiber carrying tile multiplexed optical signal.
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