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Stranded Loose Tube Armored Fiber Optic Cable

This fiber optic cable has a stranded loose-tube design. A 250μm fiber is placed inside a loose tube made of high-modulus material, which is filled with waterproof gel. The center of the cable has a metal strength member. For some cables, this metal core is covered with a layer of polyethylene (PE). The loose tubes (and filling ropes) are twisted around the central core to form a compact, round cable core, with any gaps filled with water-blocking material. A polyethylene inner sheath is extruded over the core, followed by a layer of double-sided plastic-coated steel tape (PSP). Finally, a polyethylene outer sheath is extruded to complete the cable.
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  • Stranded Loose Tube Armored Fiber Optic 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:‌

  • ‌Durable & Reliable:‌ Excellent mechanical strength and temperature stability.

  • ‌Robust Loose Tubes:‌ Made of high-strength, hydrolysis-resistant material.

  • ‌Fiber Protection:‌ Special gel filling safeguards the fibers.

  • ‌Crush & Bend Resistant:‌ Designed for flexibility and durability.

  • ‌Waterproof Design:‌ Multiple layers ensure protection:

    • Steel wire central strength member

    • Loose tube filling compound

    • 100% core filling

    • APL moisture barrier

    • PSP (Plastic Sheathed Steel) tape for extra moisture resistance

    • Water-blocking materials

‌Compliance:‌
The GYTA53 cable meets the ‌YD/T 901‌ and ‌IEC 60794-1‌ standards.

Structure Drawing

1.Fibre

2.Tube Filling Compound

3.Loose Tube

4.Cable Filling Compound

5.APL

6.PE inner Sheath

7.Water-blocking Material

8.PSP

9.Central Strength Member

10.PE Outer Sheath

Stranded Loose Tube Armored Fiber Optic 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)

GYTA53-2~6Xn

2~6

1

5

177

1000/3000

1000/3000

12.5D/25D

GYTA53-8~12Xn

8~12

2

4

177

GYTA53-14~18Xn

14~18

3

3

177

GYTA53-20~24Xn

20~24

4

2

177

GYTA53-26~30Xn

26~30

5

1

177

GYTA53-32~36Xn

32~36

6

0

177

GYTA53-38~48Xn

38~48

4

1

194

GYTA53-50~60Xn

50~60

5

0

194

GYTA53-62~72Xn

62~72

6

0

204

GYTA53-74~84Xn

74~84

7

1

239

GYTA53-86~96Xn

86~96

8

0

239

GYTA53-98~108Xn

98~108

9

1

275

GYTA53-110~120Xn

110~120

10

0

275

GYTA53-122~132Xn

122~132

11

1

312

GYTA53-134~144Xn

134~144

12

0

312

GYTA53-146~216Xn

146~216

13~18

5~0

312


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

≤3.0dB/km

≤1.0dB/km

---

---

≥500MHz·km

≥500MHz·km

0.200±0.015 NA

---

62.5/125µm

≤3.3dB/km

≤1.0dB/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 armored fiber optic cable shouldn't store in outdoor environment more than 6 months in order to keep the cable reel good state


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