Multi-Core Optical Amplifier Band Control for Crosstalk Stability
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Solution Overview
Problem
The performance indices of optical amplifiers using coupled multi-core optical fibers fluctuate over time due to crosstalk, making performance evaluation and construction of light transmission systems difficult, as existing optical transmitters, receivers, and amplifiers are not compatible with multi-core fibers and are unable to predict or account for these fluctuations.
Innovation Solution
A light amplification device and method that control the wavelength band of optical carrier waves to generate band control light, which is amplified through a coupled multi-core optical fiber with proximity cores, reducing coherence and crosstalk interference by modulating the optical carrier wave or adjusting the wavelength band based on light intensity information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a coupled multi-core optical fiber is used to increase the number of cores and expand communication capacity, then the communication capacity is improved, but crosstalk between cores occurs causing performance indices to fluctuate over time
Solution Approach 1:
The patent applies parameter changes by modifying the wavelength band of the optical carrier wave. Specifically, it controls the wavelength band to generate band control light that, when amplified through the coupled multi-core optical fiber, reduces coherence and minimizes crosstalk interference. This parameter adjustment allows the system to maintain stable performance indices while utilizing the high capacity of coupled multi-core fibers.
2Reliability
If the wavelength band is controlled to reduce coherence and crosstalk, then performance stability is improved, but the complexity of wavelength band control increases
Solution Approach 1:
The patent implements feedback control by detecting light intensity information and using it to adjust the wavelength band control. The system detects the intensity of band control light after amplification and uses this information to optimize the wavelength band settings, thereby reducing coherence and crosstalk while maintaining performance stability. This feedback mechanism automates the control process and reduces operational complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables performance evaluation and construction of stable light transmission systems using coupled multi-core optical fibers by suppressing time fluctuations in optical signal intensity and maintaining consistent performance indices.
Implementation Method 1
a band control light amplification means including a plurality of light amplification media through which the band control light propagates
Data Source
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AI summary
Light amplification devices using coupled multi-core optical fibers have a figure of merit that temporally varies, which makes it difficult to perform performance evaluation and to build a light transmission system using the same. Accordingly, a light amplification device of the present invention comprises: a band control means that controls the wavelength band of a light carrier to generate a band control light; and a band control light amplification means that has a plurality of light amplification media through which the band control light propagates, wherein the band control light amplification means amplifies the band control light in a coupled state in which the light propagating through the plurality of light amplification media induces a crosstalk and wherein the band control means controls the wavelength band such that the band control light having propagated through the plurality of light amplification media has a reduced coherence.