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Stranded Loose Tube Non-armored Fiber Optic Cable Cable

Stranded loose tube non-armored fiber optic cable features a structure where 250μm optical fibers are placed inside a loose tube made of high modulus material filled with waterproof compound. At the cable core's center lies a metal reinforcement core. For multi-core cables, a layer of polyethylene (PE) is extruded over this core. The loose tubes (along with fillers) are helically twisted around the central reinforcement to form a compact, round core, with gaps filled by water-blocking materials. Finally, a plastic-coated aluminum or steel tape is longitudinally wrapped and extruded with a PE sheath to complete the cable.
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  • Stranded Loose Tube Non-armored Fiber Optic Cable Cable

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Outdoor Duct Cables‌ are engineered for underground conduit installations, shielding cables from environmental factors to ensure stable, reliable optical signal transmission. Their rugged jackets and armor resist compression, impact, soil corrosion, moisture, and animal damage. Installed quickly through conduits, they minimize excavation and simplify future maintenance. Ideal for long-haul communication, metro networks, and challenging crossings (rivers, highways, railways), they connect nodes and data centers with high-speed, high-capacity links.

‌Outdoor Aerial Cables‌ are designed for overhead suspension between poles or towers, ensuring durability in harsh weather. Reinforced with aramid or steel wires, they withstand wind and weight, while UV-resistant, weatherproof jackets extend lifespan. Their simple installation on existing infrastructure reduces ground disruption and maintenance costs. Widely used for intercity/regional connectivity and specialized networks (power, transport, energy), they enable real-time data transmission between nodes and devices.

‌Key Features:‌

  • ‌Robust Performance:‌ Excellent mechanical strength and temperature stability.

  • ‌Durable Loose Tube:‌ Made of high-strength, hydrolysis-resistant material.

  • ‌Fiber Protection:‌ Special tube-filling compound provides critical fiber safeguarding.

  • ‌Stable Structure:‌ Compact design prevents loose tube shrinkage.

  • ‌Weatherproof Sheath:‌ PE outer layer resists UV radiation.

  • ‌Waterproof Design:‌ Ensured through multiple layers:

    • Steel wire central strength member

    • Loose tube filling compound

    • 100% cable core filling

    • APL or PSP moisture barrier

‌Compliance:‌
The GYTA/S cable meets the requirements of ‌YD/T 901‌ and ‌IEC 60794-1‌ standards.

Structure Drawing

1. Fibre

2. Tube Filling Compound

3. Loose Tube

4. Central Strength Member

5. Cable Filling Compound

6. APL psp

7. PE Sheath

Stranded Loose Tube Non-armored Fiber Optic Cable Cable

Technical Parameters

Cable Type

(Increased by 2 fibres)

Fibre Count

Tubes

Fillers

Cable Weight (Ref)

(kg/km)

Tensile Strength

Long/Short Term

(N)

Crush Resistance

Long/Short Term

(N/100mm)

Bending Radius

Static/Dynamic

(mm)

GYTA/S-2~6Xn

2~6

1

4

76

600/1500

300/1000

10D/20D

GYTA/S -8~12Xn

8~12

2

3

76

GYTA/S -14~18Xn

14~18

3

2

76

GYTA/S -20~24Xn

20~24

4

1

76

GYTA/S -26~30Xn

26~30

5

0

76

GYTA/S -32~36Xn

32~36

6

0

85

GYTA/S -38~48Xn

38~48

4

1

90

GYTA/S -50~60Xn

50~60

5

0

90

GYTA/S -62~72Xn

62~72

6

0

113

GYTA/S -74~84Xn

74~84

7

1

136

GYTA/S -86~96Xn

86~96

8

0

136

GYTA/S -98~108Xn

98~108

9

1

163

GYTA/S -110~120Xn

110~120

10

0

163

GYTA/S -122~132Xn

122~132

11

1

190

GYTA/S -134~144Xn

134~144

12

0

190

GYTA/S -146~216Xn

146~216

13~18

5~0

190

GYTA/S -288Xn

288

24

0

239


Storage/Operating Temperature: -40℃-+70℃


Optical Characteristics

Fibre Type

Attenuation (+20℃)

Bandwidth

Numerical Aperture

Cable Cut-off Wavelength λcc

@850nm

@1300nm

@1310nm

@1550nm

@850nm

@1300nm

G.652

---

---

≤0.36dB/km

≤0.22dB/km

---

---

---

≤1260nm

G.655

---

---

≤0.40dB/km

≤0.23dB/km

---

---

---

≤1450nm

50/125µm

≤3.3dB/km

≤1.2dB/km

---

---

≥500MHz·km

≥500MHz·km

0.200±0.015 NA

---

62.5/125µm

≤3.5dB/km

≤1.2dB/km

---

---

≥200MHz·km

≥500MHz·km

0.275±0.015 NA

---


Note:

a. Suffix Xn denotes fibre type

b. The colour arrangements of fibre and tube are specified in the colour identification table

c. The stranded loose tube non-armored fiber optic cable cable shouldn't store in outdoor environment more than 6 months in order to keep the cable reel good state


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