[Fujikura] Start of sales of “Single Jacket Single Armor WTC(TM)” *Fujikura*
Press release: September 9, 2024
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Start of sales of “Single Jacket Single Armor WTC(TM)”
Fujikura Corporation (President and CEO: Naoki Okada) has developed and begun sales of a new optical fiber cable, “Single Jacket Single Armor WTC(TM)” (hereinafter SJSA-WTC(TM)).
The new product SJSA-WTC(TM) is an optical fiber ribbon SWR(R)*1 that can be fused and spliced in multiple fibers at once, using our unique technology of wrapping tube structure (Wrapping
Tube
Cable(R): WTC(R) *2) This time, the two-layer jacket (sheath) that sandwiched the iron tape exterior (armor) was combined into a single layer, making it more disconnectable than previous products. Achieved a diameter reduction of approximately 31% in area and weight reduction of approximately 25%.
Figure 1. New product “SJSA-WTC(TM)”
～Point～
・By adopting a single-layer jacket structure, the cross-sectional area is approximately 31% smaller than the conventional WTC(R).
・By omitting the inner jacket, the mass of the material is reduced by approximately 25%, which also reduces environmental impact.
・Achieved tensile strength and bending strength equivalent to conventional WTC(R) through design optimization
SJSA-WTC(TM) uses a single-layer jacket structure.
After reviewing the conventional two-layer sheath structure (double jacket single armor), which is coated with an inner jacket and then an outer jacket (sheath) with iron tape armor, we have created one of the world’s thinnest and lightest optical fiber cables. We realized this. In addition, we have optimized the design and achieved high density without compromising the necessary mechanical strength (tensile strength, bending strength, etc.).
Therefore, it can be used without problems in installation
applications in environments where mechanical strength is required, such as along railroad tracks, directly buried in the ground, and in rural and underground areas where there is a risk of damage from birds and animals. The performance has also been greatly improved compared to the conventional double-layered sheath structure WTC(R).
Figure 2. Structure of SJSA-WTC(TM)
Figure 3. Structure of conventional WTC(R)
Conventional double-layer sheath structure WTC(R)
Number of hearts 144 288 432
Outer diameter (mm) 16.5 17.5 19.0
Mass (kg/km) 230 255 300
SJSA-WTC(TM)
Number of hearts 144 288 432
Outer diameter (mm) 14.0 14.5 16.0
Mass (kg/km) 175 190 215
While the amount of communication data continues to increase, the space available for laying cables in urban areas is becoming saturated.
By adopting SJSA-WTC(TM), it will be possible to more efficiently construct networks using underground areas in urban areas and railway networks connecting cities, contributing to the expansion and improvement of communication services in rural areas.
We will continue to develop products with high quality and innovative technology, so that we can contribute to the construction of high-density communication networks in various environments and at the same time further contribute to reducing environmental impact.
*Spider Web Ribbon(R) (SWR(R)), Wrapping Tube Cable(R)(WTC(R)) ), Single Jacket Single Armor WTC(TM), and SJSA-WTC(TM) are registered trademarks or trademarks of our company.
*1 Spider Web Ribbon(R) (SWR(R))
Optical fiber ribbon developed using our unique technology. It has a structure in which single-core fibers are intermittently bonded together, and is highly flexible. High-density mounting within cables is possible, contributing to smaller diameter and higher density optical fiber cables.
*2 Wrapping Tube Cable(R) (WTC(R))
The name of a small-diameter, high-density optical fiber cable that implements SWR(R) and was developed using our proprietary technology. An optical cable with a simple structure consisting of an optical fiber ribbon covered with press-wrapped tape. Because it has a structure with a smaller diameter and higher density than conventional optical fiber cables, such as the slot structure mainly used in Japan and the loose tube structure that is common overseas, it can use existing conduits and significantly shorten construction time. Can be shortened.