Remote characterization of optical components in multi-span optical fiber links
AssigneeDanmarks Tekniske Universitet
InventorsMetodi Plamenov Yankov, Rasmus Thomas Jones
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Abstract
The present disclosure relates to a remote characterization of optical components in multi-span fiber links, the characterization based on a parametric model of optical components, such as a machine learning model. The present disclosure also relates to the use of the presently disclosed model for optimization of a link, based on an arbitrary optimization strategy related to the spectral power profile and the quality of service of the link.
Claims20
A method for obtaining a parametric model of a first optical component of a set of optical components of a probed link in a WDM optical network comprising a plurality of link sections, the probed link comprising one or more of said link sections, each link section comprising a length of optical fiber and at least one of said set of optical components the probed link probed by a predefined WDM input signal and a measured WDM output signal, the method comprising:
- providing a link transfer model based on the predefined WDM input signal and the measured WDM output signal;
- isolating the first optical component from the link transfer model by using an analytical model for the optical fiber and removing the impact of the optical fiber from the link transfer model to obtain an optical component model;
- and
- determining a set of parameters of the optical component model, based on the predefined WDM input signal, by iteratively comparing a calculated WDM output signal and the measured WDM output signal.
A method for optimizing a quality of service of a remote link in a WDM optical network, the remote link comprising a plurality of link sections, each link section comprising a length of optical fiber and at least one optical component, the method comprising:
- modelling the remote WDM optical network link based on a link configuration to obtain a digital twin model of the WDM optical network link, wherein the digital twin model includes an analytical model for the optical fiber and a parametric model for at least one of the optical components;
- calculating a predicted output optical signal to noise ratio of each one of a set of input WDM signals based on the digital twin model;
- and
- optimizing the quality of service of the remote WDM optical network link by determining an optimal input WDM signal of the set of input WDM signals that optimizes the corresponding predicted output optical signal to noise ratio,
- wherein one or more parameters of the parametric model for the at least one optical component are determined based on measurements on a probed link of the WDM optical network, and wherein the probed link is different from the remote link.
Dependencies are inferred from the claim text.