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Non-metallic Layer-strand Y-sheath Optical Cable

Non-metallic Layer-strand Y-sheath Optical Cable

GYFTY

The GYFTY optical cable structure places single-mode or multi-mode fibers into a loose tube made of high-modulus polyester material, filled with a water-blocking compound. The core center consists of a non-metallic strength member. For certain fiber counts, an additional polyethylene (PE) layer is extruded over this member. The loose tubes (and filler rods, if any) are stranded around the central strength member to form a compact circular core. Gaps within the core are filled with water-blocking material, and an outer PE sheath is extruded around the core to complete the cable.


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The GYFTY optical cable structure places single-mode or multi-mode fibers into a loose tube made of high-modulus polyester material, filled with a water-blocking compound. The core center consists of a non-metallic strength member. For certain fiber counts, an additional polyethylene (PE) layer is extruded over this member. The loose tubes (and filler rods, if any) are stranded around the central strength member to form a compact circular core. Gaps within the core are filled with water-blocking material, and an outer PE sheath is extruded around the core to complete the cable.

1.Precisely controlled fiber excess length ensures excellent mechanical and temperature performance of the cable.

2.The loose tube material itself exhibits high hydrolysis resistance and superior strength.

3.Filled with a specialized compound, the tube provides critical protection for the fibers.

4.Offers high lateral crush resistance and flexibility.

5.The polyethylene (PE) sheath provides strong resistance to ultraviolet radiation.

6.Fully dielectric cable. Requires no grounding and is immune to lightning strikes.

Structural Parameters

	Cable Type (Increasedby2fibers)	Fiber Count	Tubes	Cable Weightkg/km(Ref)	Tensile Stre Long/ShortTerm (N)	Crush Resistance Long/Short Term(N/100mm)	Bending Radius Static/Dynamic(mm)
GYFTY-2-36Xn	2-36	6	82	600/1000	300/1000	10D/20D
GYFTY-38-72Xn	38-72	6	90
GYFTY-74-96Xn	74-96	8	115
GYFTY-98-120Xn	98-120	10	141
GYFTY-122-144Xn	122-144	12	172
GYFTY-146-216Xn	146-216	18	178
GYFTY-2-42Xn	2-42	7	93	600/1500
GYFTY-44-84Xn	44-84	7	102
GYFTY-86-96Xn	86-96	8	118
GYFTY-98-120Xn	98-120	10	144
GYFTY-122-144Xn	122-144	12	174
GYFTY-2-48Xn	2-48	8	114	1000/3000
GYFTY-50-96Xn	50-96	8	123
GYFTY-98-120Xn	98-120	10	149
GYFTY-122-144Xn	122-144	12	180

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