Multi-Core Fiber Core Dependent Loss Determination
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Solution Overview
Problem
Current optical transmission systems using multi-core fibers face limitations due to core-dependent loss (CDL) and misalignment losses, which affect signal quality and capacity, and existing solutions do not provide effective estimation or prediction of CDL values, hindering system performance optimization.
Innovation Solution
An optical transmission system that determines core-dependent loss values based on fiber parameters and misalignment losses, using a system administration device to calculate these values and adjust parameters such as crosstalk coefficients and coupling coefficients, allowing for targeted optimization of transmission performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multi-core fibers are used to increase transmission capacity, then the transmission capacity is improved, but core-dependent loss and misalignment losses increase affecting signal quality
Solution Approach 1:
The patent applies preliminary action by determining core-dependent loss values during the design and manufacturing phase before actual deployment. The system administration device calculates CDL values based on fiber parameters and misalignment losses, allowing engineers to predict and optimize system performance beforehand, selecting appropriate error correcting codes and modulation schemes to compensate for anticipated signal quality issues.
2Reliability
If core-dependent loss values are determined accurately, then system performance optimization is enabled, but system complexity increases
Solution Approach 1:
The patent implements self-service by enabling the system administration device to automatically determine core-dependent loss values using predefined fiber parameters and misalignment loss models. The device autonomously calculates CDL values, evaluates system performance, and recommends optimization parameters without requiring complex manual measurements or external testing equipment, thereby reducing operational complexity while maintaining accurate performance assessment.
Data Source
AI summary
The various embodiments provide an optical transmission system comprising an optical transmitter configured to transmit data over an optical fiber transmission channel made of a multi-core fiber, optical signals carrying the data propagate along the multi-core fiber according to two or more cores, the multi-core fiber being associated with fiber parameters and misalignment losses values, wherein the optical transmission system comprises a system administration device configured to determine a core dependent loss value depending on the fiber parameters and misalignment losses values.