Single Jacket
Single Armor WTC™
(SJSA-WTC™)
SJSA-WTC™ uses a single-jacket (sheath) structure instead of conventional double-jacket (sheath) structure. We achieved a lightweight optical fiber cable with a world-class small diameter.
It can be used in environments where mechanical strength is required, such as along railway tracks, buried directly in the soil, and in rural/underground areas where there is a risk of wildlife damage by rodents.
As the data traffic continues to increase globally, urban areas are reaching saturation in available space for cable installation.
SJSA-WTC™ enables to more efficiently build telecommunication networks in underground areas of urban regions and utilize
the railway networks connecting cities and achieve the expansion and improvement of communication services in rural areas.
Structure of SJSA-WTC™
Feature 1. Small diameter, lightweight
■Single-jacket structure achieved approximately 31% reduction in cross-sectional area and 25% weight reduction compared to
conventional double-jacket products.
Feature 2. Improved workability
■The accessibility to optical fibers from cables by removing jacket is greatly improved compared to existing products.
Feature 3. Mechanical strength
■Achieved high density without compromising the required mechanical strength (tensile strength, bending strength, and so on)
by design optimization.
■Suitable for installation in environments requiring mechanical strength, including railway tracks, buried directly in the soil, and
in rural/underground areas where there is a risk of wildlife damage by rodents.
Application
■Duct
■Direct buried
Physical & Mechanical Characteristics
| 144F | 288F | 432F | |||
| Cable diameter (in approx.) | mm (in.) | 14.0 (0.551) | 14.5 (0.571) | 16.0 (0.630) | |
| Cable weight (in approx.) | kg/km (lbs/1000ft) | 175 (118) | 190 (121) | 220 (148) | |
| Fiber counts in bundled unit | – | 72F | |||
| Number of bundled unit | – | 6 | |||
| Tensile performance (*1) | Short term(*2) | N | 2700 | ||
| Long term | N | 810 | |||
| Bending radius(*1) | Cyclic flexing | mm | 140 | 145 | 160 |
| Cable bend | mm | 140 | 218 | 240 | |
| Compressive strength(*1) | N/100mm | 2200 | |||
| Impact resistance(*1) | N・m | 4.4 | |||
*1. Reference standard : Telcordia GR-20
*2. Please follow the appropriate procedure that Fujikura recommends for pulling cable
Optical Fiber Characteristics
| Fiber Count | Fiber Diameter | Fiber Pitch | Fiber Type | MFD | Maximum Attenuation (Cabled) (dB/km) | ||
| 1310 nm | 1383 nm (*3, 4) | 1550 nm | |||||
| 144F to 432F | 250 µm | 250 µm | Ace (ITU-T G.652.D and G.657.A1) | 9.2 ± 0.4 µm | ≤ 0.40 | ≤ 0.40 | ≤ 0.30 |
*3. The value after hydrogen aging in optical fiber in accordance with IEC 60793-2-50 test procedure.
*4. The value before coloring process
Environmental Characteristics
| Temperature cycling | Installation | -30°C to 60°C (-22°F to +140°F) |
| Operation | -40°C to 70°C (-40°F to +158°F) | |
| Transportation/Storage | -40°C to 70°C (-40°F to +158°F) |
Qualifications
| Governing Body | Standard Code |
| Telcordia | GR-20 |
