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Non-Metallic Loose Tube Blown Micro Cable

Non-Metallic Loose Tube Blown Micro Cable

GCYFY

The GCYFY micro cable structure involves placing single-mode or multimode fibers into loose tubes made of high-modulus polyester material, with the tubes filled with waterproof compound. The cable core centers on a non-metallic strength member (FRP), which for certain fiber counts is additionally coated with an extruded layer of polyethylene (PE). The tubes (and filler rods) are stranded around the central strength member to form a compact circular core, with interstices filled with water-blocking material, and finally extruded with an outer polyethylene jacket to complete the cable.


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The GCYFY micro cable structure involves placing single-mode or multimode fibers into loose tubes made of high-modulus polyester material, with the tubes filled with waterproof compound. The cable core centers on a non-metallic strength member (FRP), which for certain fiber counts is additionally coated with an extruded layer of polyethylene (PE). The tubes (and filler rods) are stranded around the central strength member to form a compact circular core, with interstices filled with water-blocking material, and finally extruded with an outer polyethylene jacket to complete the cable.

1. Small diameter, light weight, and moderate stiffness, suitable for blown installation.

2. High fiber density, maximizing duct space utilization.

3. Blowing speed of micro cable reaches 30-70 meters/minute, with a single blowing distance up to 1200 meters, ensuring high installation efficiency.

4. Allows incremental cable deployment as traffic grows, enabling phased investment and reducing initial costs.

5. Micro cables can be blown out for future replacement with advanced fiber types, maintaining technological leadership.

6. Ideal for construction in congested metro duct networks, avoiding destructive excavation and eliminating high costs associated with right-of-way acquisition.

7. Suitable for backbone, metro, and access network applications.

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)
GCYFY-12-72Xn	12-72	6	23	35/115	150/450	10D/20D
GCYFY-74-96Xn	74-96	8	32	35/115
GCYFY-98-120Xn	98-120	10	42	60/210
GCYFY-122-144Xn	122-144	12	52	80/240

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