Topological Insulator Microfiber Optical Cable

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Solution Overview

Problem

The capacity of optical transport networks is not keeping pace with the exponential growth of network traffic, leading to a predicted bottleneck or congestion issue, as current optical parallelism techniques are nearing their theoretical limits.

Innovation Solution

The use of topological insulator microfibers as the optical core in optical communication cables, surrounded by a cryogenic cooling layer and an insulative layer comprising photonic crystal material, which includes a plurality of photonic crystal beads, to create a high-capacity data transmission system that reduces signal loss and noise.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If optical parallelism techniques are used to increase network capacity, then data transmission capacity is improved, but the system approaches its theoretical limit and cannot sustain further exponential growth

Engineering Contradiction:
Improvenetwork capacityVSAvoidcapacity scalability
Core Design Contradiction:
ProductivityVSAdaptability or versatility

Solution Approach 1:

The patent changes the fundamental parameter of the optical fiber core material from conventional glass to topological insulator materials (such as bismuth selenide or bismuth telluride). This material parameter change enables dramatically higher data transmission capacity by utilizing the unique electronic structure and surface state properties of topological insulators, which allow for much higher bandwidth compared to traditional optical fibers.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent employs a composite structure combining topological insulator materials with conventional optical fiber components. The core is made of topological insulator material while maintaining an optical fiber geometry, creating a hybrid structure that leverages the high-capacity properties of topological insulators within the established optical fiber transmission framework.

Inventive Principle:
Principle #40Composite materials

2Productivity

If topological insulator microfibers are used as optical core, then data transmission capacity increases by 20,000 times, but cryogenic cooling is required to maintain performance

Engineering Contradiction:
Improvedata transmission capacityVSAvoidcooling system requirement
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent implements a nested structure where the topological insulator microfiber core is surrounded by a cooling layer containing coolant channels, which is in turn surrounded by an insulative layer. This nested arrangement integrates the cryogenic cooling system directly within the cable structure, allowing the complex cooling requirements to be embedded within the optical fiber design itself.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The patent introduces a coolant as an intermediary substance that transfers heat away from the topological insulator core. The coolant flows through channels in the cooling layer, acting as a heat transfer medium that enables the topological insulator to maintain its required low-temperature operating condition for high-capacity data transmission.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Reliability

If cryogenic cooling layer is added to maintain topological insulator performance, then signal loss and noise are reduced, but cable structure complexity increases

Engineering Contradiction:
Improvesignal qualityVSAvoidcable structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent implements a nested structure where the topological insulator microfiber core is surrounded by a cooling layer containing coolant channels, which is in turn surrounded by an insulative layer. This nested arrangement integrates the cryogenic cooling system directly within the cable structure, allowing the complex cooling requirements to be embedded within the optical fiber design itself.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The patent employs a composite structure combining topological insulator materials with conventional optical fiber components. The core is made of topological insulator material while maintaining an optical fiber geometry, creating a hybrid structure that leverages the high-capacity properties of topological insulators within the established optical fiber transmission framework.

Inventive Principle:
Principle #40Composite materials

4Temperature

If photonic crystal material is used for insulation layer, then heat transfer is reduced and cryogenic environment is maintained, but manufacturing complexity increases

Engineering Contradiction:
Improvecryogenic environment maintenanceVSAvoidphotonic crystal fabrication
Core Design Contradiction:
TemperatureVSEase of manufacture

Solution Approach 1:

The patent utilizes photonic crystal materials which have a periodic porous or structured composition at the micro-scale. This periodic structure creates photonic bandgaps that prevent thermal radiation, effectively reducing heat transfer into the cryogenic core. The porous or periodic nature of photonic crystals provides superior thermal insulation compared to conventional materials.

Inventive Principle:
Principle #31Porous materials

Solution Approach 2:

The patent employs a composite structure combining topological insulator materials with conventional optical fiber components. The core is made of topological insulator material while maintaining an optical fiber geometry, creating a hybrid structure that leverages the high-capacity properties of topological insulators within the established optical fiber transmission framework.

Inventive Principle:
Principle #40Composite materials

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 increases the capacity of optical networks by up to 20,000 times while maintaining the same cable size, effectively addressing the impending capacity crunch by utilizing the unique properties of topological insulators to bind photons and reduce heat transfer, thereby enhancing data transmission efficiency.

Implementation Method 1

utilizing the unique properties of topological insulators to bind photons

Methodology Applied
Scientific EffectPhoton binding:

Implementation Method 2

a cryogenic cooling layer surrounds the optical core... carrying a coolant

Methodology Applied
Scientific EffectHeat transfer: Conduction (thermal)

Implementation Method 3

the insulative layer comprises a layer of photonic crystal material... to create a high-capacity data transmission system that reduces signal loss and noise

Methodology Applied
Scientific EffectPhotonic crystal effect: Photonic Crystal

Data Source

PatentUS10371910B2Optical communications cables utilizing topological insulators as optical fiber cores
Publication Date: 2019.08.06 AT&T INTELLECTUAL PROPERTY I L P
  • US10371910B2 patent drawing
  • US10371910B2 patent drawing
  • US10371910B2 patent drawing

AI summary

An optical core made from at least on topological insulator microfiber. A cryogenic cooling layer surrounds the optical core. An insulative layer surrounds the cryogenic cooling layer. In one embodiment, the insulative layer comprises a layer of photonic crystal material.