Pseudorandom Optical Ribbon Bonding for Flexible Perpendicular Rolling

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Solution Overview

Problem

Existing intermittently bonded optical fiber ribbons face challenges in maintaining structural integrity, planar alignment, and flexibility while allowing perpendicular rolling, which are not adequately addressed by conventional adhesive application methods.

Innovation Solution

A method of intermittently bonding optical fibers using a pseudorandom number sequence to generate a unique bonding pattern, ensuring structural integrity, planar alignment, and flexibility, applied via a specialized printer or thermal process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If adhesive is applied continuously along the length of optical fibers, then structural integrity is maintained, but the optical fiber ribbons cannot be rolled and density is reduced

Engineering Contradiction:
Improvestructural integrityVSAvoidrolling capability and cable density
Core Design Contradiction:
Stability of the object's compositionVSProductivity

Solution Approach 1:

The continuous adhesive application is segmented into discrete intermittent bonding zones along the length of the optical fibers. This segmentation allows the ribbon to maintain structural integrity at bonded points while remaining flexible and rollable in unbonded sections, directly resolving the contradiction between structural stability and rolling capability.

Inventive Principle:
Principle #1Segmentation

2Productivity

If adhesive is applied in random patterns, then rolling is enabled, but structural integrity and planar alignment are compromised

Engineering Contradiction:
Improverolling capabilityVSAvoidstructural integrity and planar alignment
Core Design Contradiction:
ProductivityVSStability of the object's composition

Solution Approach 1:

Different regions of the optical fiber ribbon are assigned different bonding characteristics through specifically designed intermittent bonding patterns. The bonding zones are strategically positioned to provide structural support where needed while leaving other regions unbonded to enable rolling, achieving both structural integrity and rolling capability through localized quality variation.

Inventive Principle:
Principle #3Local quality

3Ease of manufacture

If bonding pattern is not unique, then manufacturing is simplified, but the ability to acquire rolling capability in perpendicular direction is reduced

Engineering Contradiction:
Improvebonding pattern applicationVSAvoidrolling capability in perpendicular direction
Core Design Contradiction:
Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The bonding pattern incorporates asymmetric design elements that enable the ribbon to acquire rolling capability in perpendicular directions. The non-uniform distribution of bonding zones creates directional flexibility that would not be achievable with symmetric or random patterns, while still maintaining manufacturing feasibility through defined patterns.

Inventive Principle:
Principle #4Asymmetry

Data Source

PatentEP4040203B1A method of deriving a bonding pattern for intermittently bonding optical ribbon
Publication Date: 2025.08.06 STERLITE TECHNOLOGIES LTD
  • EP4040203B1 patent drawingFigure 1
  • EP4040203B1 patent drawingFigure 2
  • EP4040203B1 patent drawingFigure 3

AI summary

A method of deriving a bonding pattern for intermittently bonding optical fibers includes generating a random number, which is an integer, converting the integer into a binary series corresponding to a width-bonding pattern, applying the width-bonding pattern at a predefined position along a width of the intermittently bonded optical fiber ribbon (100) and repeating to obtain a subsequent predefined position on the intermittently bonded optical fiber ribbon (100). In particular, '0' represents the unbonded region if '1' represents the bonded region and '0' represents the bonded region if '1' represents the unbonded region.