Multi-Core Fiber Core Dependent Loss Determination
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Solution Overview
Problem
Current optical transmission systems using multi-core fibers face challenges in estimating and predicting core dependent loss, which affects the performance behavior of optical transmission systems, and existing solutions do not efficiently determine core dependent loss values for given configurations.
Innovation Solution
An optical transmission system with a system configuration device that determines core dependent loss values using fiber parameters, misalignment losses, and scrambling functions, allowing for the calculation of core loss values as random variables and selection of fiber parameters to achieve target performance metrics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If core scrambling is implemented in multi-core fiber transmission systems, then core dependent loss effects are reduced and performance prediction accuracy is improved, but the device complexity and manufacturing complexity increase
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing core dependent loss values in a lookup table during system configuration, rather than performing complex real-time calculations during operation. The system configuration device pre-processes fiber parameters, misalignment losses, and scrambling functions to generate predetermined CDL values that are stored for rapid retrieval during transmission, thereby improving performance prediction accuracy without adding operational complexity
Solution Approach 2:
The patent uses copying by creating a simplified mathematical model and lookup table that replicates the complex core dependent loss behavior. Instead of implementing the full physical complexity of light propagation through multiple cores with misalignments, the system creates a computational copy (mathematical model) that predicts CDL values based on key parameters, enabling accurate performance prediction with reduced device complexity
2Ease of manufacture
If the number of scrambling devices is reduced, then device complexity and manufacturing cost decrease, but core dependent loss determination accuracy may be affected
Solution Approach 1:
The patent applies universality by designing a single system configuration device that performs multiple functions: it calculates core dependent loss values, generates lookup tables, determines scrambling functions, and predicts performance metrics. This multi-functional device consolidates what would otherwise require multiple specialized components, reducing manufacturing complexity while maintaining determination accuracy through integrated computational capabilities
Solution Approach 2:
The patent uses parameter changes by varying the level of detail in the mathematical model based on system requirements. The system can adjust which fiber parameters are considered (e.g., core positions, misalignment values, scrambling patterns) to achieve the desired accuracy threshold, allowing manufacturers to balance precision against manufacturing simplicity by selecting appropriate parameter sets for different application scenarios
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 comprising a multi-core fiber, the data being carried by optical signals, the optical signals propagating along the multi-core fiber according to two or more cores, the multi-core fiber being associated with fiber parameters and misalignment losses values, at least one scrambling device being arranged in the optical fiber transmission channel for scrambling the two or more cores according to a scrambling function, wherein the optical fiber transmission channel comprises a system configuration device configured to determine a core dependent loss value depending on the fiber parameters, at least one misalignment loss, a number of the at least one scrambling device, and the scrambling function.