A SYSTEM AND A METHOD FOR GENERATING INFORMATION INDICATIVE OF AN IMPAIRMENT OF AN OPTICAL SIGNAL
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United States of America Patent
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Issued Date -
Mar 10, 2016
app pub date -
Apr 9, 2014
filing date -
May 1, 2013
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Abstract
A method for generating information indicative of an impairment of an optical signal, such as a decrease in the OSNR is disclosed. The OSNR may be measured without interpolating out of band noise to in-band noise. Consequently, the optical OSNR of the optical signal after propagating through a reconfigurable network may be determined. The method comprises the step of establishing a spectral model of the optical signal within the optical signal's frequency band, the spectral model comprising a spectral impairment profile added to a model spectrum of the optical signal before the impairment, measuring the spectrum of the optical signal to generate in-band optical signal spectrum information indicative of the spectrum of the optical signal within the optical signal's band and determining at least one value of the spectral impairment profile by applying the spectral model of the optical signal to the in-band optical signal spectrum information.
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