Optical Link Fiber Identification via Longitudinal Power Profile
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Monitoring the parameters of an optical link, particularly identifying fiber types and lengths, is challenging due to the need for precise characterization of optical fibers in series.
Innovation Solution
A method that generates a longitudinal power profile of an optical link by processing samples of the optical signal, which indicates scaled optical power as a function of accumulated chromatic dispersion. This method allows for the identification of fiber types and estimation of fiber lengths based on the profile.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional monitoring methods are used, then fiber types and lengths can be identified, but the process requires prior knowledge and complex characterization procedures
Solution Approach 1:
The optical link monitors itself by utilizing its own transmitted optical signals to generate longitudinal power profiles. The system extracts fiber characteristics (type, length, attenuation) directly from the signal without requiring external equipment or prior knowledge of fiber parameters, enabling self-characterization and self-monitoring
Solution Approach 2:
The method transforms the monitoring approach by changing from direct physical measurement to parameter extraction through signal analysis. By converting optical signal samples into longitudinal power profiles and extracting characteristics from these profiles, the system achieves fiber identification without complex physical characterization procedures
2Measurement precision
If detailed fiber characterization is performed, then accurate fiber type identification is achieved, but the monitoring process becomes more complex and time-consuming
Solution Approach 1:
The system performs preliminary signal processing by continuously monitoring optical signal samples and generating longitudinal power profiles in real-time. This preliminary action enables the system to have ready-made characterizations available for quick fiber identification without requiring time-consuming analysis when needed
Solution Approach 2:
The patent replaces complex physical measurement procedures with signal processing techniques. Instead of using complex physical characterization equipment, the system uses computational methods to extract fiber parameters from optical signal data, significantly reducing monitoring time while maintaining accuracy
3Adaptability or versatility
If optical signal samples are processed to generate longitudinal power profiles, then fiber characteristics can be extracted without prior knowledge, but computational processing is required
Solution Approach 1:
The longitudinal power profile generation process serves multiple functions simultaneously: it characterizes fiber types, measures fiber lengths, determines attenuation values, and provides the basis for further optical link analysis. This multi-functionality justifies the computational processing by delivering comprehensive fiber characteristics from a single processing approach
Data Source
AI summary
A method and an apparatus. An optical signal is received on an optical channel at an output of an optical link, the optical link comprising one or more fibers connected in series. A longitudinal power profile of the optical link is generated from samples of the optical signal, for a wavelength of the optical channel. The longitudinal power profile indicates a scaled optical power as a function of accumulated chromatic dispersion, the scaled optical power being optical power P times a coefficient which is constant over the length of each of the one or more fibers.