Intra Data Center Optical Switching Architecture
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Solution Overview
Problem
Current data center optical switching systems require multiple layers of optical and Ethernet switches, leading to significant power consumption and operational costs, especially for intra data center communication.
Innovation Solution
An intra data center optical switching system utilizing a first optical comb, a wavelength exchanger, and a tunable filter to generate and route optical signals across multiple data center systems without the need for traditional optical and Ethernet switches, enabling direct communication between data center systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple layers of optical and Ethernet switches are used for data center communication, then network connectivity and routing capability are improved, but power consumption and operational costs increase significantly
Solution Approach 1:
The patent extracts and eliminates the intermediate optical switches and Ethernet switches from the traditional multi-layer switching architecture. By directly coupling data center racks optically, the system removes the power-consuming switching layers while maintaining full N:N connectivity through optical wavelength routing between rack units.
Solution Approach 2:
The patent introduces an optical wavelength multiplexing system as an intermediary mechanism that enables direct communication between data center racks without traditional switches. The system uses wavelength division multiplexing to route multiple data streams simultaneously over optical fibers, providing switch-like functionality at the optical layer without requiring powered switching devices.
2Adaptability or versatility
If traditional optical switches and Ethernet switches are deployed, then network flexibility and connectivity are achieved, but device complexity and operational costs increase
Solution Approach 1:
The patent removes the complex multi-layer switching infrastructure (optical switches, Ethernet switches, transponders) and replaces it with a simplified direct-optical-connection architecture. Each data center rack is equipped with optical transceivers that directly communicate with other racks through optical fibers, eliminating the need for intermediate switching devices and their associated complexity.
Solution Approach 2:
The patent replaces the mechanical/electronic switching systems with an all-optical routing system. Instead of using powered switches that electronically route signals, the system uses optical wavelength multiplexing and demultiplexing to direct data streams between racks, substituting electronic switching mechanisms with optical domain operations.
3Adaptability or versatility
If multiple switch layers are implemented for intra data center communication, then communication versatility is improved, but operational costs and energy consumption increase
Solution Approach 1:
The patent enables data center racks to self-communicate directly through optical connections without relying on centralized switching infrastructure. Each rack acts as both endpoint and communication node, using integrated optical transceivers to establish direct peer-to-peer connections, thereby eliminating the need for powered switching equipment and reducing operational energy costs.
Solution Approach 2:
The patent extracts the communication functionality from the powered switching infrastructure and relocates it to the optical transmission medium itself. By using wavelength division multiplexing on optical fibers, the system provides versatile communication capabilities without requiring the extracted switching layers, thereby eliminating their associated operational energy consumption and 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 solution reduces power consumption and operational costs by eliminating the need for multiple switch layers, allowing efficient intra data center optical switching and communication among multiple data center systems.
Implementation Method 1
an optical comb receives an optical signal from a data center system and generates multiple optical wavelengths
Implementation Method 2
a tunable filter receives multiple optical wavelengths as an optical signal from the wavelength exchanger and filters the optical signal to selectively output one of the multiple optical wavelengths
Implementation Method 3
a wavelength exchanger receives multiple optical wavelengths as an optical signal from the optical comb and exchanges the multiple optical wavelengths onto another optical signal
Data Source
AI summary
Methods and systems for intra data center optical switching of optical signals use an intra data center optical switch to optically transmit N optical wavelengths as an optical signal transmitting a data stream generated by a data center system included within N data center systems. The data center system may selectively receive one of N−1 optical wavelengths as another optical signal corresponding to one of N−1 other data center systems excluding the data center system from the intra data center optical switch. In this manner, intra data center optical switching may be performed without utilizing Ethernet and optical switches, which may result in reduced power consumption for data center communication.