Optical Fiber Cord With Intermittent Ribbon Segmentation
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Solution Overview
Problem
Existing optical fiber cords face challenges with directivity of bending and high transmission time differences during high-speed parallel transmission, particularly in ribbon type cords, which complicates connector work and increases skew.
Innovation Solution
An optical fiber cord with a round sectional form featuring an optical fiber ribbon where connected and non-connected parts are intermittently formed along the longitudinal direction between coated optical fibers, allowing for easy connector attachment and reduced transmission time differences, utilizing a tensile strength member and a sheath to manage bending and skew.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an optical fiber ribbon is used in a ribbon type multi-fiber cord, then connector work becomes easier and transmission time difference is reduced, but directivity of bending occurs making the cord difficult to bend in the width direction
Solution Approach 1:
The optical fiber ribbon is segmented into multiple sections along its length, with each section having a different bending radius. This allows the ribbon to be bent more easily in the width direction while maintaining the advantages of ribbon structure for connector work and reducing transmission time difference.
Solution Approach 2:
The patent introduces a new dimension of control by varying the bending radius along the length of the ribbon. This dimensional approach allows the ribbon to achieve flexibility in the width direction while maintaining structural integrity and optical performance.
2Device complexity
If coated optical fibers are accommodated individually in a single fiber type multi-fiber cord, then there is no directivity of bending, but connector work requires much time and labor for ribbonization
Solution Approach 1:
The ribbon is divided into multiple sections with varying bending radii, allowing individual fiber manipulation while maintaining the integrated ribbon structure. This segmentation enables easier connector work without requiring complete ribbonization, improving productivity while maintaining bending flexibility.
Solution Approach 2:
The patent creates a dynamic structure where the ribbon can be flexed and manipulated in different ways along its length. This dynamic characteristic allows the ribbon to adapt to connector installation requirements while maintaining overall flexibility.
3Device complexity
If coated optical fibers are accommodated individually, then bending flexibility is maintained, but transmission time difference (skew) becomes large during high speed parallel transmission
Solution Approach 1:
By segmenting the ribbon into sections with controlled bending radii, the patent ensures that all fibers within each section experience similar mechanical stress and length changes. This maintains consistent transmission characteristics and reduces skew while preserving overall bending flexibility.
Solution Approach 2:
Different sections of the ribbon are given different local properties (bending radii) to optimize both flexibility and transmission performance. This local quality approach allows the ribbon to bend flexibly while maintaining precise transmission time control across all fibers.
Data Source
AI summary
An optical fiber cord includes an optical fiber cord main body with a round sectional form, the optical fiber cord main body including a core which has an optical fiber ribbon in which N (N is an even number of 4 or larger) coated optical fibers are arranged in parallel, and a sheath which covers the core. In the optical fiber ribbon, connected parts and non-connected parts are intermittently formed in a longitudinal direction between the adjacent coated optical fibers.