Multi-Core Optical Transmission System Span Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing optical transmission systems with hybrid excitation methods require a large number of components and increased cost due to the need for multiple lasers and fan-in/fan-out devices for each optical repeater in multi-core optical transmission paths, leading to a bulky optical repeater device.
Innovation Solution
The system employs a configuration with a first optical repeater for individual core excitation and a second optical repeater for collective clad excitation, positioned apart based on their respective transmittable distances, to reduce the number of components and maintain optical intensity control across multiple cores.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hybrid excitation method with both core excitation and clad excitation is used in each optical repeater, then optical intensity control and power saving performance are improved, but the number of components increases and device size becomes large
Solution Approach 1:
The optical transmission path is segmented into multiple spans, with alternate spans using core excitation repeaters and clad excitation repeaters. This segmentation allows each repeater type to be optimized independently, reducing the component count per repeater while maintaining overall system control capability through the alternating pattern.
Solution Approach 2:
The patent combines core excitation and clad excitation methods in an alternating pattern across different spans rather than using both in every repeater. This merging approach maintains the benefits of both excitation methods (control and power saving) while avoiding the component proliferation that would result from implementing both in each repeater.
2Ease of operation
If multiple lasers and fan-in/fan-out devices are provided for each optical repeater to support individual core excitation, then optical signal amplification control is improved, but cost increases
Solution Approach 1:
The system segments the excitation control function across alternate repeaters rather than implementing full control capability in every repeater. Core excitation repeaters provide individual core control while clad excitation repeaters provide collective amplification, reducing the per-repeater component count and cost while maintaining overall system controllability.
3Productivity
If core excitation is used for each core in multi-core optical fiber, then communication capacity expansion is achieved, but the number of required optical components increases
Solution Approach 1:
The patent segments the multi-core optical transmission system into spans with alternating excitation methods. This allows core excitation to be applied selectively in certain spans to enable individual core control and capacity expansion, while clad excitation spans reduce the overall component count by using collective amplification.
Solution Approach 2:
Different excitation methods are applied to different locations (spans) of the optical transmission path based on local requirements. Core excitation is used in spans where individual core control is needed for capacity expansion, while clad excitation is used in spans where collective amplification suffices, optimizing the component-to-capacity ratio.
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 configuration suppresses the increase in the number of components and costs while effectively controlling optical intensity across each core, reducing the overall hardware amount and maintaining transmission performance.
Implementation Method 1
an optical amplification medium to amplify the optical signal
Data Source
AI summary
The optical transmission system of the present invention includes a multi-core transmission path which includes a plurality of cores, and in which optical signals propagate through the plurality of cores, a first optical repeating means for amplifying the optical signals by individually exciting first multi-core optical amplification mediums, and a second optical repeating means for amplifying the optical signals by collectively exciting second multi-core optical amplification mediums, wherein the first optical repeating means is positioned spaced apart from the second optical repeating means by a distance determined on the basis of either a first transmissible distance due to the first optical repeating means and a second transmissible distance due to the second optical repeating means.