Fiber Deployment Method for Elastic Optical Networks
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Solution Overview
Problem
The existing network infrastructure using traditional single-mode fibers is inefficient in supporting high-order modulation formats for ultra-high-speed and ultra-long-distance optical transmission, leading to waste of spectrum resources when upgrading to ultra-low loss fibers, as current research focuses on replacing standard single-mode fibers rather than optimizing their coexistence.
Innovation Solution
A fiber deployment method that traverses all single-mode fiber links to select the most efficient links for ultra-low loss fiber upgrade, minimizing the maximum number of frequency slots used network-wide, and preferentially utilizes single-mode fiber spectrum resources when both types meet service demands, employing simulation and optimization techniques to manage light paths and OSNR values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ultra-low loss fiber is deployed to replace standard single-mode fiber for ultra-high-speed transmission, then transmission distance and signal quality are improved, but spectrum resources of existing standard single-mode fibers are wasted
Solution Approach 1:
The patent changes the parameter of fiber loss by deploying ultra-low loss fiber specifically on links where it provides the most benefit for high-order modulation formats, rather than replacing all standard single-mode fibers. This selective parameter change maintains transmission quality where needed while preserving spectrum resources on links where standard fiber suffices.
Solution Approach 2:
The patent applies local quality by deploying ultra-low loss fiber only in specific locations (links with high traffic demand and long distance) rather than uniformly across the entire network. This localized deployment optimizes transmission quality for critical paths while avoiding waste of spectrum resources on less demanding links.
2Length of stationary object
If ultra-low loss fiber is deployed throughout the network, then transmission distance for 400G/1T channels is increased, but device complexity and deployment cost increase
Solution Approach 1:
The patent segments the optical network into different fiber types based on link characteristics and service requirements. Standard single-mode fiber is retained for short-distance or low-demand links, while ultra-low loss fiber is deployed only for long-distance or high-demand links, creating a segmented hybrid architecture that reduces overall complexity.
Solution Approach 2:
The patent applies partial action by deploying ultra-low loss fiber only to the extent necessary for supporting high-order modulation formats on specific links, rather than excessively replacing all fiber in the network. This partial deployment achieves the transmission distance goals for critical paths without the full complexity and cost of complete network replacement.
3Device complexity
If standard single-mode fiber is used for high-order modulation, then existing infrastructure is maintained, but transmission distance is limited and signal quality deteriorates
Solution Approach 1:
The patent performs preliminary action by proactively deploying ultra-low loss fiber on links that will require high-order modulation formats in the future, before signal quality deterioration occurs. This advance preparation allows the network to support ultra-high-speed transmission without waiting for standard fiber to fail or quality to degrade.
Data Source
AI summary
The present invention provides a fiber deployment method, storage medium, electronic device and system. The fiber deployment method includes the following steps: S10, traversing all single-mode fiber links and selecting a link for ultra-low loss fiber upgrade with the objective of minimizing the maximum number of frequency slots used in the whole network; and S20, when both an ultra-low loss fiber and a single-mode fiber satisfy the service demand, using preferentially spectrum resources in the single-mode fiber. The fiber deployment method of the present invention is simple and feasible. It allows a more efficient fiber upgrade strategy and more reasonable spectrum resource allocation and can make full use of the existing single-mode fibers in the elastic optical network, thereby allowing more efficient resource utilization.