Optical-Fabric L1 Replicator and Switch for Low-Latency Networks
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Solution Overview
Problem
Existing networking applications face a tradeoff between ease of implementation and latency, particularly in ultra-low latency systems, due to the use of L1 switches with fixed ports and the need for electrical signal conversions, which are impractical for high-speed optical signals.
Innovation Solution
A data replication and switching device that performs optical signal replication and switching without electrical conversions, using optical taps and couplers to mirror data across networks, eliminating the need for electrical signal processing and reducing latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If L1 switches are used for traffic mirroring, then ease of implementation is improved, but latency increases by 5-10 ns
Solution Approach 1:
The patent replaces electrical signal processing with optical signal processing throughout the entire data path. Optical replicators and switches handle data in the optical domain, eliminating the need to convert optical signals to electrical signals and back, thereby reducing the 5-10 ns latency introduced by electrical processing while maintaining ease of implementation through dedicated optical infrastructure
Solution Approach 2:
The patent extracts the replication and switching functions from traditional electrical L1 switches and implements them as dedicated optical replicators. By separating these functions into standalone optical components that operate independently of electrical processing, the system achieves both ease of implementation and minimal latency, as the optical replicators can copy and route data without electrical conversion overhead
2Adaptability or versatility
If electrical signal conversions are used for high-speed optical signals, then device compatibility is improved, but latency increases due to conversion overhead
Solution Approach 1:
The patent substitutes electrical signal conversions with direct optical signal processing. Optical replicators and switches operate entirely in the optical domain, copying and routing data without converting to electrical signals. This maintains compatibility with existing optical network infrastructure while eliminating the latency overhead of optical-to-electrical and electrical-to-optical conversions
Solution Approach 2:
The patent introduces optical replicators as intermediary devices that can copy and route optical signals directly without requiring electrical conversion. These optical replicators act as mediators between data sources and destinations, enabling high-speed optical signals to be replicated and switched while maintaining their optical form throughout the entire path, thus avoiding conversion latency
3Adaptability or versatility
If FPGA systems are used for traffic mirroring, then functionality is improved, but resource utilization approaches 100% increasing complexity
Solution Approach 1:
The patent replaces FPGA-based electrical processing with dedicated optical replicators that operate in the optical domain. Instead of using FPGAs to perform complex digital logic operations on electrical signals, the system uses optical components to replicate and route data directly in the optical domain, significantly reducing computational resource requirements and complexity while maintaining full functionality
Solution Approach 2:
The patent uses optical replicators to create physical copies of optical signals directly in the optical domain. Rather than using FPGAs to process and replicate data through complex digital logic, the optical replicators make literal optical copies of the incoming light signals, distributing them to multiple destinations simultaneously. This approach maintains full functionality while dramatically reducing resource utilization and system complexity
4Ease of operation
If optical to electrical conversion is performed, then digital logic processing is enabled, but latency overhead is introduced
Solution Approach 1:
The patent substitutes electrical digital logic processing with optical analog processing. Optical replicators and switches perform data manipulation directly in the optical domain using linear optical operations, eliminating the need to convert optical signals to electrical signals for processing. This maintains ease of operation for data replication and switching while completely eliminating the latency overhead associated with optical-to-electrical and electrical-to-optical conversions
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
The solution achieves significant latency reduction by replicating and switching optical signals directly, maintaining high-speed data transmission without interruptions, thus improving network performance in low-latency systems.
Implementation Method 1
a first optical tap respectively associated with the data communication port is configured to replicate and transmit the optical signals of the data
Implementation Method 2
an optical coupler is configured to receive the optical signals of the processed data and to transmit the optical signals of the processed data to the replication port
Data Source
AI summary
A data replication and switching device includes an optical tap configured to replicate and transmit optical signals of data received over a data communication network to a processing stage and a replication port. Data acted on by the processing stage are received and replicated by an optical tap, and transmitted to the replication port and over the data communication network.