Multi-Core Fiber Optical Amplification With Bidirectional Switching
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Solution Overview
Problem
Existing optical amplification apparatuses using multi-core erbium-doped fibers (MC-EDF) do not adequately address inter-core crosstalk, leading to signal light quality deterioration.
Innovation Solution
An optical amplification apparatus with a switching unit that converts unidirectional transmission to bidirectional transmission in MC-EDF, combined with an amplification unit to amplify signal light bidirectionally, reducing inter-core crosstalk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If unidirectional transmission is used in MC-EDF, then device complexity is reduced, but signal light quality deteriorates due to inter-core crosstalk
Solution Approach 1:
The patent applies bidirectional transmission instead of unidirectional transmission in MC-EDF. By inverting the transmission mode from single-direction to dual-direction, the patent eliminates inter-core crosstalk while maintaining signal quality, thus resolving the contradiction between device simplicity and signal reliability.
2Reliability
If bidirectional transmission is implemented in MC-EDF, then signal light quality is improved by reducing inter-core crosstalk, but device complexity increases
Solution Approach 1:
The patent makes the MC-EDF serve multiple functions by enabling bidirectional transmission. The same optical fiber medium handles both forward and reverse signal transmission, eliminating the need for separate dedicated paths and reducing overall system complexity despite the enhanced transmission mode.
3Loss of energy
If conventional optical amplification is used without direction switching, then component loss is higher, but transmission distance is limited due to signal quality deterioration
Solution Approach 1:
The patent implements continuous signal amplification in both transmission directions simultaneously. By maintaining active amplification for bidirectional signals through the MC-EDF, the system compensates for component losses and extends transmission distance without interrupting signal quality, allowing longer effective transmission ranges.
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
This approach effectively suppresses signal light quality deterioration by minimizing inter-core crosstalk in MC-EDF, enhancing transmission distance and reducing component loss.
Implementation Method 1
an amplification unit configured to amplify the signal light being bidirectionally transmitted
Data Source
AI summary
An optical amplification apparatus, an optical transmission system, and an optical amplification method that make it possible to suppress deterioration in signal light quality are provided. An optical amplification apparatus is an optical amplification apparatus connected between a first multi-core fiber and a second multi-core fiber, and includes: a switch configured to switch a transmission direction of signal light being unidirectionally transmitted in the first multi-core fiber and the second multi-core fiber, into bidirectional transmission; and an amplifier configured to amplify the signal light being bidirectionally transmitted.