TECHNICAL SPECIFICATION
LOOSE TUBE / SINGLE JACKET
NON-ARMOR / JELLY FILLED CABLE
KRONE RESERVE THE RIGHT TO MAKE CHANGE TO THIS DOCUMENT WITHOUT PRIOR NOTICE
RELEASE: 2.0
PAGE 2 OF 7
1.

SCOPE
1.1 Application
This specification covers the general requirements for fiber optic telecommunication
cables used for inter-building backbone in duct installation and lashed aerial use.
1.2 Cable Description
1) Single Jacket/Non Armor
Single and 50 or 62.5 Multi mode color coded fibers, jelly filled color coded loose
tubes, PE filler (if required), SZ-stranded around the dielectric central strength
member, jelly filled, plastic tape, dielectric strength member and outer PE jacket
2.

OPTICAL FIBER
1) Manufacturing process: MCVD
2) Fiber type: Matched clad fiber
The optical, geometrical and mechanical performance of the optical fiber shall be in
accordance with Table 1 and 2 below.
Table 1. The Optical, Geometrical and Mechanical Performance of the Multi Mode Fiber
SPECIFICATION
ITEMS UNITS
50 Multi Mode 62.5 Multi Mode
Attenuation DB/km
3.5 at 850nm
1.0 at 1300nm

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Table 2. The Optical, Geometrical and Mechanical Performance of the Single Mode Fiber
ITEMS UNITS SPECIFICATION
Attenuation dB/km
0.4 at 1310nm
0.25 at 1550nm
Chromatic Dispersion Ps/nm.km
3.2 at 1285nm ~ 1330nm
18 at 1550nm
Zero Dispersion Wavelength nm 1300 ~ 1324
Zero Dispersion Slope Ps/nm
2
.km
0.093
Cut-off Wavelength
(cc, 22m of a cabled fiber)
nm
1270
Mode Field Diameter

9.31.0%
Mode Field Concentricity

0.8
Cladding Diameter

1251.0
Cladding Non-circularity %
1.0
Coating Diameter

(To provide the required tensile strength together
with the central strength member)
Material Black MDPE
Outer Jacket
Thickness Min. 1.25mm, Nom. 1.8mm
KRONE RESERVE THE RIGHT TO MAKE CHANGE TO THIS DOCUMENT WITHOUT PRIOR NOTICE
RELEASE: 2.0
PAGE 4 OF 7
4.

FIBER AND LOOSE BUFFER TUBE IDENTIFICATION
The color code of the loose buffer tubes and the individual fibers within each loose buffer
tube shall be in accordance with Table 4 below.
Table 4. The Color Code of the Individual Fibers and Loose Tubes
No. of Fibers/
Loose Buffer Tubes
Color
No. of Fibers/
Loose Buffer Tubes
Color
1Blue7Red
2 Orange 8 Black
3 Green 9 Yellow
4 Brown 10 Violet
5Gray11Pink
6 White 12 Aqua
5.

PHYSICAL / MECHANICAL / ENVIRONMENTAL
PERFORMANCE

PAGE 5 OF 7
Table 5. The Mechanical and Environmental Performance of the Cable (continued)
ITEMS
TEST METHOD AND
ACCEPTANCE CRITERIA
Repeated Impact Test
# Test method: TIA/EIA-455-25B
-. Height of impact: 150mm
-. Drop hammer mass: 2.0kg
-. No. of impact cycles: 25 cycles
# Acceptance Criteria
-. Attenuation Increment: 0.10 dB (SM)
0.20 dB (MM)
-. No jacket cracking and fiber breakage
Cyclic Flexing Test
# Test method: TIA/EIA-455-104A
-. Sheave diameter: 20D (D = cable diameter)
-. No. of flexing cycles: 25 cycles
-. Flexing speed: 30 cycles/minute
# Acceptance Criteria
-. Attenuation Increment: 0.10 dB (SM)
0.20 dB (MM)
-. No jacket cracking and fiber breakage
Cable Twist Test
# Test method: TIA/EIA-455-85A
-. Cable length twisted: 2m
-. No. of twist cycles: 10 cycles
-. Twist angle: 180
# Acceptance Criteria
-. Attenuation Increment: 0.10 dB (SM)