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Figure-8 Aluminum Armored Optical Cable (GYTC8A)

Figure-8 Aluminum Armored Optical Cable (GYTC8A)

A sheathed Figure 8 Cable

The GYTC8A optical cable structure involves placing 250μm optical fibers into loose tubes made of high-modulus material, with the tubes filled with waterproof compound. The core''''s center is a metallic strength member, which for certain fiber counts is additionally coated with an extruded layer of polyethylene (PE). The loose tubes (and filler rods) are stranded around the central strength member to form a compact circular core, with interstices filled with water-blocking material. A longitudinally applied plastic-coated aluminum tape (APL) is integrated with a steel wire strand into a figure-8 polyethylene sheath.


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The GYTC8A optical cable structure involves placing 250μm optical fibers into loose tubes made of high-modulus material, with the tubes filled with waterproof compound. The core''''s center is a metallic strength member, which for certain fiber counts is additionally coated with an extruded layer of polyethylene (PE). The loose tubes (and filler rods) are stranded around the central strength member to form a compact circular core, with interstices filled with water-blocking material. A longitudinally applied plastic-coated aluminum tape (APL) is integrated with a steel wire strand into a figure-8 polyethylene sheath.

1. The steel wire strand provides extremely high tensile strength, facilitating self-supporting aerial installation and reducing deployment costs.

2. Excellent mechanical and temperature characteristics.

3. High hydrolysis resistance and superior strength of the loose tube material.

4. Critical fiber protection provided by specialized thixotropic gel filling.

5. The following measures ensure water resistance:

Loose tubes filled with specialized waterproof compound

Complete cable core filling

Double-sided plastic-coated steel tape (PSP) enhances moisture penetration resistance

Structural Parameters

	Cable Type (Increased by 2 fibers)	Fiber Count	Tubes	Cable Weight kg/km (Ref)	Tensile Strength Long/Short Term (N)	Crush Resistance Long/Short Term (N/100mm)	Bending Radius Static/Dynamic (mm)
GYTC8A-2-30Xn	2-30	5	132	2000/4000	300/1000	10D/20D
GYTC8A-32-36Xn	32-36	6	141
GYTC8A-38-60Xn	38-60	5	143
GYTC8A-62-72Xn	62-72	6	161
GYTC8A-74-96Xn	74-96	8	178
GYTC8A-98-120Xn	98-120	10	200
GYTC8A-122-144Xn	122-144	12	227

Optical Characteristics

Fiber Type		G.652	G.655	50/125 μm	62.5/125 μm
Attenuation（+20℃）	@ 850 nm			≤ 3.3 dB/km	≤ 3.5 dB/km
	@1300 nm			≤ 1.2 dB/km	≤ 1.2 dB/km
	@1310 nm	≤ 0.36 dB/km	≤ 0.40 dB/km
	@1550 nm	≤ 0.22 dB/km	≤ 0.23 dB/km
Bandwidth	@ 850 nm			≥ 500 MHz·km	≥ 200 MHz·km
Bandwidth	@1300 nm			≥ 500 MHz·km	≥ 500 MHz·km
Numerical Aperture				0.200 ± 0.015 NA	0.275 ± 0.015 NA
Cable Cut-off Wavelength λcc		≤ 1260 nm	≤ 1450 nm