Silicon Photonics Network Interface for Datacenter Space and Heat

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Solution Overview

Problem

Traditional network interface cards (NICs) in dense datacenter installations face issues such as mechanical failures, high maintenance requirements, space constraints, heat dissipation problems, data transfer latencies, and user safety concerns due to their bulky nature and need for frequent updates.

Innovation Solution

The implementation of silicon photonics (SiP) chips, which integrate media access controller (MAC) and physical layer (PHY) functions, replacing traditional NICs and mounted on the motherboard, utilizing optical waveguides for interconnection, reducing the need for separate cards and addressing space and heat dissipation issues.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If traditional NICs are used in dense datacenter installations, then network interface functionality is provided, but space constraints and heat dissipation problems occur

Engineering Contradiction:

Improvespace occupationVSAvoidmechanical failure rate

Core Design Contradiction:

Area of stationary objectVSReliability

Solution Approach 1:

The patent integrates the network interface card functionality directly into the motherboard by fabricating NIC circuits and optical waveguides on the same substrate as the processor. This merging eliminates the need for separate NIC cards, reducing space occupation and eliminating mechanical connection points that could fail, thereby improving reliability in dense datacenter installations.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent replaces mechanical NIC card connections with integrated optical waveguide connections fabricated directly on the motherboard. This substitution eliminates mechanical插拔 connections and associated failure modes, while also reducing the physical space required for NIC cards and their connectors.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Ease of repair

If traditional NICs are used, then network interface functionality is provided, but maintenance requirements increase

Engineering Contradiction:

Improvemaintenance needsVSAvoidsystem complexity

Core Design Contradiction:

Ease of repairVSDevice complexity

Solution Approach 1:

By merging the NIC functionality with the motherboard and processor into a single integrated system, the patent eliminates separate NIC cards that would require independent maintenance, updating, and replacement. This integration reduces maintenance needs while the modular optical interface design maintains manageable system complexity.

Inventive Principle:

Principle #5Merging (Combining)

3Loss of time

If separate NIC cards are used, then network interface functionality is provided, but data transfer latencies occur

Engineering Contradiction:

Improvedata transfer latencyVSAvoidinterconnection complexity

Core Design Contradiction:

Loss of timeVSDevice complexity

Solution Approach 1:

The patent replaces electrical signal transmission through copper traces with optical signal transmission through waveguides fabricated directly on the motherboard. This substitution reduces signal propagation delays and eliminates electrical interference, thereby reducing data transfer latency while maintaining integrated system architecture.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

4Object-affected harmful factors

If traditional NICs are used, then network connectivity is provided, but user safety concerns arise

Engineering Contradiction:

Improveuser handling risksVSAvoidinstallation complexity

Core Design Contradiction:

Object-affected harmful factorsVSEase of operation

Solution Approach 1:

By replacing mechanical NIC card installation with integrated optical waveguide connections fabricated on the motherboard, the patent eliminates user handling of separate NIC cards and their connectors. This integration removes potential safety hazards associated with manual installation and handling of electrical components while maintaining network connectivity functionality.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 minimizes mechanical failures, reduces maintenance needs, conserves space, lowers power consumption, and enhances data transfer speeds while eliminating user-handling risks and third-party vendor dependencies, thereby improving reliability and efficiency in dense network installations.

Implementation Method 1

one or more optical waveguides that interconnect two or more of the function blocks

Methodology Applied

Scientific EffectTotal internal reflection: Total Internal Reflection

Data Source

PatentUS11736206B2Use of siilicon photonics (SiP) for computer network interfaces

Publication Date: 2023.08.22 DELL PROD LP

AI summary

A silicon photonics (SiP) chip includes MAC and PHY blocks interconnected by optical waveguides (560) to provide network interface for a computer system. The SiP chip may be formed in a package mounted to the computer's motherboard. In an example, the computer system is a blade server module mounted in a datacenter chassis.