Gearbox IC for Optical Link Data Rate Conversion

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Solution Overview

Problem

Current optical fiber links require duplication or redesign of optical transceiver modules and ASICs to increase data rates, which is costly and inefficient.

Innovation Solution

The integration of a gearbox IC that performs data rate conversion and phase alignment, allowing existing ASICs to be used with high-speed optical transceivers to double the data rate without redesign, by converting N lanes of X Gbps electrical data signals into N/2 lanes of 2X Gbps signals and vice versa.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If optical transceiver modules and ASICs are duplicated or redesigned to increase data rates, then the data rate is improved, but the cost and device complexity increase

Engineering Contradiction:
Improvedata rateVSAvoiddevice complexity
Core Design Contradiction:
SpeedVSDevice complexity

Solution Approach 1:

A gearbox IC is introduced as an intermediary component between the ASIC and the optical transceiver module. The gearbox IC performs data rate conversion by converting N lanes of X Gbps electrical data signals into N/2 lanes of 2X Gbps signals, enabling higher data rates without redesigning the ASIC or duplicating transceiver modules. This intermediary device resolves the contradiction by providing rate conversion functionality that increases speed while avoiding the complexity of system duplication.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The invention changes the data rate parameter through the gearbox IC, which converts signals from one data rate (X Gbps) to another (2X Gbps). This parameter transformation allows the system to achieve doubled data rates without changing the fundamental architecture or duplicating components, thereby improving speed while maintaining relatively simple device complexity.

Inventive Principle:
Principle #35Parameter changes

2Speed

If optical transceiver modules and ASICs are duplicated to increase data rates, then the data rate is improved, but the cost increases

Engineering Contradiction:
Improvedata rateVSAvoidcost
Core Design Contradiction:
SpeedVSEase of manufacture

Solution Approach 1:

The gearbox IC serves as a cost-effective intermediary that enables data rate conversion without requiring expensive duplication of optical transceiver modules or redesign of ASICs. By implementing rate conversion in a dedicated IC component, the system achieves doubled data rates while avoiding the high costs associated with component duplication and redesign.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The gearbox IC implements parameter changes in data rate conversion, allowing the system to operate at higher data rates (2X Gbps) without the need to purchase and integrate additional transceiver modules or redesign ASICs. This approach reduces manufacturing costs by avoiding component duplication while still achieving the desired speed improvement.

Inventive Principle:
Principle #35Parameter changes

3Adaptability or versatility

If existing ASICs are used with high-speed optical transceivers, then compatibility is maintained, but data rate conversion and phase alignment are required

Engineering Contradiction:
ImprovecompatibilityVSAvoidconversion complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The gearbox IC acts as an intermediary that bridges existing ASICs and high-speed optical transceivers. It performs both data rate conversion and phase alignment functions, enabling compatible operation between legacy ASICs and high-speed transceivers without requiring complex custom integration. The gearbox handles the conversion complexity internally, maintaining compatibility while achieving rate conversion.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The gearbox IC is designed with multi-functionality, simultaneously performing data rate conversion and phase alignment tasks. This universal component can interface with existing ASICs while supporting high-speed optical transceivers, eliminating the need for separate conversion and alignment systems. The multi-functional design reduces overall system complexity while maintaining broad compatibility.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS9236946B2Method and apparatus for performing data rate conversion and phase alignment
Publication Date: 2016.01.12 AVAGO TECHNOLOGIES INTERNATIONAL SALES PTE LTD
  • US9236946B2 patent drawing
  • US9236946B2 patent drawing
  • US9236946B2 patent drawing

AI summary

A gearbox IC is incorporated into an optical communications system to enable an optical link that incorporates the system to achieve data rates that are at least double that which are currently achievable in optical links. The gearbox IC is compatible with ASIC designs currently used in optical fiber links. The gearbox IC enables the data rate of the optical fiber link to be dramatically increased without requiring a redesign of the ASIC that is currently used in the optical fiber link. The gearbox IC performs data rate conversion and phase alignment for bit streams being transferred via the gearbox IC between the ASIC and an optical transceiver module of the optical communications system.