Multicore Optical Fiber Colored Orientation Marking

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Solution Overview

Problem

The challenge in optical interconnects is to increase speed without increasing the size and cost, which is addressed by developing multicore optical fibers, but requires accurate orientation of optical core elements for correct transmission and reception, which is difficult due to the complexity of aligning multiple fibers.

Innovation Solution

The solution involves creating a multicore optical fiber with a colored portion that is visually distinct from the coating layer, allowing for easy alignment of the optical core elements, either through co-extrusion or application as a separate layer, and using energy sources to detect the orientation of core elements for precise alignment during manufacturing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If the number of individual fibers in an optical interconnect is increased to increase speed and bandwidth, then the transmission capacity is improved, but the overall size and cost of the optical interconnect increases

Engineering Contradiction:
Improvetransmission speedVSAvoidsize of optical interconnect
Core Design Contradiction:
SpeedVSVolume of moving object

Solution Approach 1:

Multiple optical core elements are merged into a single multicore optical fiber, allowing multiple data transmission channels to coexist within one fiber. This combining approach achieves high transmission capacity and speed while avoiding the increased size associated with multiple separate fibers.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The multicore optical fiber serves multiple functions simultaneously by containing multiple optical core elements that can transmit different data channels. This multi-functional design enables the single fiber to replace multiple individual fibers, maintaining high transmission capacity without increasing overall system size.

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

2Volume of moving object

If multiple optical core elements are placed in a single fiber to avoid increased fiber count, then the size is reduced, but the difficulty of aligning and orienting the core elements increases

Engineering Contradiction:
Improvesize of optical interconnectVSAvoidalignment complexity
Core Design Contradiction:
Volume of moving objectVSDevice complexity

Solution Approach 1:

A colored portion is applied to the multicore optical fiber to provide visual orientation indicators. This color coding system simplifies the alignment process by enabling operators to quickly identify the orientation and positioning of the fiber, thereby reducing the complexity of aligning multiple core elements despite their compact arrangement.

Inventive Principle:
Principle #32Color changes

Solution Approach 2:

The colored portion acts as an intermediary visual aid between the optical core elements and the operator. It mediates the alignment process by providing external visual cues that guide the correct positioning and orientation of the fiber during connector attachment, making the complex internal core structure easier to manage.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Ease of operation

If a colored portion is added to the multicore optical fiber to indicate orientation, then the ease of operation is improved, but the manufacturing complexity increases

Engineering Contradiction:
Improveease of connector attachmentVSAvoidmanufacturing process complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The colored portion is applied to the multicore optical fiber during the manufacturing process, before the fiber is deployed. This preliminary action ensures that the orientation indicators are already in place when the fiber reaches the installation stage, simplifying subsequent connector attachment operations without requiring additional steps during deployment.

Inventive Principle:
Principle #10Preliminary action

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 method enables efficient and accurate alignment of optical core elements in multicore fibers, simplifying the connector attachment process and ensuring correct transmission and reception, thereby enhancing the speed and efficiency of optical interconnects without increasing size or cost.

Implementation Method 1

The colored portion can be selected from a UV light curable resin material and an ink material and combinations thereof

Methodology Applied
Scientific EffectUV light curable: Photopolymerisation

Implementation Method 2

translating an uncoated multicore optical fiber between an energy source and a detector, directing a beam of the energy source so that it at least partially impinges upon the multicore optical fiber causing an image to be detected by the detector

Methodology Applied
Scientific EffectEnergy absorption and image detection: Absorption (EM radiation)

Data Source

PatentUS10156693B2Multicore optical fibers and methods of manufacturing the same
Publication Date: 2018.12.18 CORNING OPTICAL COMMUNICATIONS LLC
  • US10156693B2 patent drawing
  • US10156693B2 patent drawing
  • US10156693B2 patent drawing

AI summary

A multicore optical fiber with a reference section having a material defining a marked multicore glass optical fiber. The multicore fibers can be in groupings, for example, the groupings can be in the form of one of an optical fiber ribbon covered by a matrix, and a tight buffered cable. Fiber optic connectors can be assembled to the multicore optical fiber at either or both ends, and the colored portion can be associated with the optical fiber connector aligning the optical core elements with the optical connectors. The assembly can have at least one transceiver device with a transmit port and a receive port defining a two-way communication channel. Further aspects describe methods of manufacturing multicore fibers including application of curable coatings and reference sections.