Multi-Core Optical Amplifier Layout Conversion for Stable Relay Gain
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Solution Overview
Problem
The challenge lies in constructing an optical fiber transmission system that enables stable relay optical amplification using a coupled multi-core optical fiber as a transmission path, as current systems face issues with crosstalk and unstable performance parameters like gain and noise figure due to the non-linear optical effects of coupled multi-core fibers.
Innovation Solution
The solution involves an optical amplification device and method that convert the spatial layout of optical signal beams from a coupled state to a non-coupled state to reduce interference, amplify the signals in this state, and then revert them back to a coupled state, utilizing a non-coupled multi-core optical fiber with a double-clad structure for stable amplification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If a coupled multi-core optical fiber is used as a transmission path, then transmission distance is extended due to reduced non-linear optical effects, but crosstalk between cores increases and performance parameters become unstable
Solution Approach 1:
The optical amplification device segments the amplification process into two distinct stages: first converting the spatial layout from coupled to non-coupled state to eliminate crosstalk during amplification, then converting back to coupled state for transmission. This segmentation allows each stage to optimize for its specific function.
Solution Approach 2:
The patent introduces an intermediary non-coupled multi-core optical fiber as a mediator between the coupled multi-core transmission paths. This intermediary component provides a stable amplification environment by eliminating core coupling effects during the amplification process.
2Reliability
If a non-coupled multi-core optical fiber is used for amplification, then crosstalk between cores is reduced and amplification stability is improved, but spatial layout conversion is required
Solution Approach 1:
The optical spatial layout converting means dynamically adjusts the spatial configuration of optical signals, transforming them from a coupled spatial layout to a non-coupled layout and vice versa. This dynamic conversion enables the system to adapt between different operational requirements.
3Adaptability or versatility
If conventional optical amplifiers designed for single-core fibers are used, then device compatibility is maintained, but they are incompatible with multi-core optical fibers
Solution Approach 1:
The optical amplification device achieves universality by being able to handle both coupled and non-coupled multi-core optical fiber configurations through spatial layout conversion. The same amplifier structure can serve multiple functions by adapting the spatial layout of input and output signals.
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 allows for the construction of an optical fiber transmission system that achieves stable relay optical amplification using coupled multi-core optical fibers, reducing power consumption and maintaining stable optical amplification characteristics.
Implementation Method 1
a coupled multi-core optical fiber has, as opposed to the non-coupled multi-core optical fiber, a small distance (pitch) between cores... Therefore, while there is a disadvantage that an influence due to crosstalk between cores is increased, cores can be densely disposed... The coupled multi-core optical fiber is subjected to an influence due to a non-linear optical effect less than the non-coupled multi-core optical fiber
Data Source
AI summary
It is difficult to construct an optical fiber transmission system enabling relay optical amplification using a coupled multi-core optical fiber as an optical transmission path; therefore, an optical amplification device includes first optical spatial layout converting means for converting a spatial layout of a plurality of optical signal beams propagating through each of a plurality of cores, from a coupled state in which optical signal beams interfere between a plurality of cores to a non-coupled state in which optical signal beam interference is reduced between a plurality of cores; optical amplifying means for amplifying, in the non-coupled state, the plurality of optical signal beams with the non-coupled state and generating a plurality of amplified optical signal beams; and second optical spatial layout converting means for converting a spatial layout of the plurality of amplified optical signal beams from the non-coupled state to the coupled state.