Specification
LGST 2004-201

FOR

Optical Fiber Cable
Loose Tube / Jelly Filled Core
Single Jacket / Non-Armored

[ Figure-8 Self-supporting Aerial Cable
]

1. SCOPE

1.1 Application

This specification covers the general requirements for fiber optic telecommunication

0.20±0.015 0.275±0.015
Core Diameter
μm 50±3.0 62.5±3.0
Core Non-circularity %
≤ 6.0 ≤ 6.0
Cladding Diameter
μm 125±2.0 125±2.0
Cladding Non-circularity %
≤ 2.0 ≤ 2.0
Core/Cladding
Concentricity Error
μm ≤ 3.0 ≤ 3.0
Coating Diameter
μm 245±15 245±15
Proof Test kPsi
≥ 100 ≥ 100
* Other performance value available upon request. Table 2. The Optical and Geometrical Performance of Single Mode Fiber (ITU-T G652)

ITEMS UNITS SPECIFICATION
Attenuation dB/km
≤ 0.36 at 1310nm
≤ 0.22 at 1550nm
Attenuation vs. Wavelength dB/km
≤ 0.05 at 1285nm & 1330nm

Cladding Diameter
μm 125 ± 1.0
Cladding Non-circularity %
≤ 1
Coating Diameter
μm 245 ± 10
Proof Test GN/m
2
≥ 0.7 3. CABLE CONSTRUCTION

The construction of the cable shall be in accordance with Table 3 below.

Table 3. Construction of the Cable
ITEMS DESCRIPTION
Number of Fibers Max. 72
No. of Fibers per Tube 6 or 12
Loose Buffer Tube PBT (Polybutylene Terephthalate)
Filling Compound
in Loose Buffer Tube
Thixotropic Jelly Compound
Filler
Polyethylene Rod
(if necessary to make good core configuration)
Central Strength Member FRP

5 Slate 11 Rose
6 White 12 Aqua 5. PHYSICAL / MECHANICAL / ENVIRONMENTAL
PERFORMANCE AND TESTS

5.1 Temperature Range

For the cables covered by this specification, the following temperature ranges apply:
-. Operation : -25 °C to +70°C
-. Installation : -10 °C to +60°C
-. Storage/Shipping : -40 °C to +70°C

5.2 Typical Span, Sag and Tension

NESC loading condition, recommended span, sag and tension for Figure-8 type aerial
cable is described in Table 5 and 6 below.

Table 5. Recommended Span, Sag and Tension
Every Day Operation
NESC Loading (Light)
Fiber
Counts
Span
(m)
Normal Sag


The mechanical and environmental performance of the cable shall be in accordance with
Table 7 below. Unless otherwise specified, all attenuation measurements required in this
section shall be performed at 1550nm for single mode fiber (SM) and at 1300nm for multi
mode fiber (MM) and monitored before and after of each test items in Table 7.

The messenger wire part may be removed from the cable sample for convenience in
testing, but for tensile strength test, it shall not be removed from the sample.