Shared Optical Pumps for Multi-Fiber Channel Amplification
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Solution Overview
Problem
Conventional optical communication networks require a large number of optical pumps to maintain high-speed data transmission across multiple fiber links, leading to increased costs and complexity, especially in geographically diverse setups where bandwidth capacity is often exhausted, necessitating additional fiber links and pumps.
Innovation Solution
The implementation of an optical power management system that shares optical pumps across multiple fiber rails, reducing the number of pumps needed by using a combination of main and redundant pumps, including EDFA and Raman amplifiers, to efficiently amplify signals across multiple fibers, thereby reducing the overall number of pumps required.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional optical communication networks use separate optical pumps for each fiber link, then signal transmission reliability is maintained, but the number of optical pumps increases leading to increased costs and system complexity
Solution Approach 1:
The patent combines multiple optical pump functions into a single shared optical pump that serves multiple fiber channels. The optical switch dynamically routes the shared pump to different channels as needed, eliminating the need for separate dedicated pumps for each fiber link while maintaining transmission reliability through active redundancy management.
Solution Approach 2:
The shared optical pump is designed to perform multiple functions by serving different fiber channels at different times. The optical switch enables the single pump to be dynamically allocated to various channels based on traffic demands, making the pump universal rather than dedicated to a single channel.
2Quantity of substance
If additional fiber links are deployed to increase bandwidth capacity, then network bandwidth is improved, but the number of optical pumps required increases leading to higher deployment costs
Solution Approach 1:
The patent merges the pump resources across multiple fiber channels by implementing a shared optical pump architecture. This allows the network to support increased bandwidth capacity through additional fiber links without proportionally increasing the number of optical pumps, as the shared pump can be dynamically allocated to serve different channels.
Solution Approach 2:
The optical switch introduces dynamic allocation of the shared optical pump to different fiber channels based on real-time traffic demands. This dynamic routing capability allows the system to efficiently utilize pump resources across multiple channels, supporting bandwidth expansion without linearly increasing pump requirements.
3Reliability
If dedicated optical pumps are used for each fiber channel, then transmission reliability is ensured, but deployment and maintenance costs increase
Solution Approach 1:
The patent combines multiple dedicated pump functions into a single shared optical pump that serves multiple fiber channels through dynamic routing. This consolidation reduces the total number of pumps required, lowering deployment costs while maintaining reliability through the optical switch's ability to actively manage and route the shared pump to different channels as needed.
Solution Approach 2:
The optical switch acts as an intermediary between the shared optical pump and multiple fiber channels. It enables the single pump to reliably serve multiple channels by dynamically routing optical signals, thereby maintaining transmission reliability without requiring dedicated pumps for each channel, thus reducing deployment costs.
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 significantly reduces the number of optical pumps needed, decreases deployment costs, and enhances the reliability and efficiency of optical communication networks, particularly in scenarios with multiple fiber channels, by enabling power sharing and amplification across multiple fibers.
Implementation Method 1
an optical amplifier coupled to the first optical fiber and configured to receive optical power from the optical pump and amplify optical signals in the first and second optical channels
Data Source
AI summary
Aspects of an optical communications network are described that include two or more optical fibers arranged to allow communication in the same direction. The optical network includes a first optical amplifier coupled to the first optical fiber, a second optical amplifier coupled to the second optical fiber, a first optical pump to provide optical power to the first optical fiber, and a second pump to provide optical power to both the first and the second optical fibers. By sharing the second pump between the first and the second optical fibers, a need to deploy additional pumps is alleviated. Scaling of the optical network to include additional optical fibers provides further cost savings by allowing more pumps to be shared among the multiple optical fibers.