Figure 8 Fiber Optic Cable

The structure of the GYTC8A fiber optic cable is to insert a 250μm optical fiber into a loose tube made of high-modulus material, which is filled with a waterproof compound. At the center of the core is a metal reinforcing core, around which loose tubes (and filler ropes) are twisted to form a compact and round core. The core is coated with a layer of plastic-coated aluminium tape (APL) and integrated into a figure-8 polyethylene sheath with the stranded wire. YOFC Optical Fiber & Cable Co., Ltd. can also provide Y-sheathed or S-sheathed figure-8 fiber optic cables GYTC8Y, GYTC8S, etc., which are mostly used in self-supporting overhead laying.

Description

Product standards

YOFC’s GYTC8A fiber optic cable complies with YD/T 1155 and IEC 60794-1 standards.

Features:

• The steel wire strands have extremely high tensile strength, which is convenient for self-supporting overhead laying and reduces installation costs

• Fiber optic cables have very good mechanical properties and temperature characteristics

• The loose tube material itself has good hydrolysis resistance and high strength

• The tube is filled with special paste to protect the optical fiber

• The following measures are taken to ensure the waterproof performance of the cable:

– Single wire center reinforcing core

– The loose tube is filled with a special waterproofing compound

– Full core filling

– Plastic-coated aluminium tape (APL) moisture barrier

Structural parameters

Fiber optic cable model (in 2-fiber increments)	Number of fibers	Number of casings	Number of fill ropes	Reference cable weight (kg/km)	Tensile force is allowed Long-term/short-term (N)	Allowable squashing force Long-term/short-term (N/100mm)	Bend radius Static/Dynamic (mm)
GYTC8A-2~6Xn	2~6	1	4	158	According to the diameter of the wire wire	300/1000	10D/20D
GYTC8A-8~12Xn	8~12	2	3	158
GYTC8A-14~18Xn	14~18	3	2	158
GYTC8A-20~24Xn	20~24	4	1	158
GYTC8A-26~30Xn	26~30	5	0	158
GYTC8A-32~36Xn	32~36	6	0	167
GYTC8A-38~48Xn	38~48	4	1	172
GYTC8A-50~60Xn	50~60	5	0	172

Storage and use temperature: -40°C to +70°C.

Optical properties

Fiber type	attenuation （+20℃）				bandwidth		Numerical aperture	Fiber optic cable cut-off wavelength
Fiber type	@850nm	@1300nm	@1310nm	@1550nm	@850nm	@1300nm	Numerical aperture	Fiber optic cable cut-off wavelength
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	—