Loose Tube Stranded Non-Metallic Strength Member Unarmored Optical Cable (GYFTA)

The GYFTA optical cable consists of 250µm fibers placed into loose tubes made of high-modulus material, with the tubes filled with water-blocking compound. The center of the cable core is a non-metallic strength member (FRP); for certain fiber counts, a layer of polyethylene (PE) is extruded over the strength member. The loose tubes (and fillers) are stranded around the central strength member into a compact and circular cable core, with water-blocking filling in the interstices. The core is wrapped with aluminum-plastic laminated tape (APL) and finished with an extruded polyethylene jacket.

Standards

YOFC GYFTA optical cable complies with YD/T 901 and IEC 60794-1 standards.

Features

• Excellent mechanical performance, temperature characteristics and flame retardancy

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

• The tubes are filled with special jelly for critical protection of the fibers

• Specially designed compact cable structure effectively prevents tube retraction

• PE jacket offers excellent UV radiation resistance

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

- Single non-metallic central strength member

- Loose tubes filled with special water-blocking compound

- Fully filled cable core

- Aluminum-plastic laminated tape (APL) moisture barrier

Construction Parameters

Cable Type (In increments of 2 fibers)	Number of Fibers	Number of Tubes	Number of Fillers	Reference Cable Weight (kg/km）	Allowable Tensile Load Long-term/Short-term (N)	Allowable Crush Load Long-term/Short-term (N/100mm)	Bending Radius Static/Dynamic (mm)
GYFTA-2~6Xn	2~6	1	5	99	400/1000	300/1000	10D/20D
GYFTA-8~12Xn	8~12	2	4	99
GYFTA-14~18Xn	14~18	3	3	99
GYFTA-20~24Xn	20~24	4	2	99
GYFTA-26~30Xn	26~30	5	1	99
GYFTA-32~36Xn	32~36	6	0	99
GYFTA-2~6Xn	2~6	1	6	111	600/1500
GYFTA-8~12Xn	8~12	2	5	111
GYFTA-14~18Xn	14~18	3	4	111
GYFTA-20~24Xn	20~24	4	3	111
GYFTA-26~30Xn	26~30	5	2	111
GYFTA-32~36Xn	32~36	6	1	111
GYFTA-38~42Xn	38~42	7	0	111
GYFTA-44~48Xn	44~48	4	2	122
GYFTA-50~60Xn	50~60	5	1	122
GYFTA-62~72Xn	62~72	6	0	122
GYFTA-2~6Xn	2~6	1	7	127	1000/3000
GYFTA-8~12Xn	8~12	2	6	127
GYFTA-14~18Xn	14~18	3	5	127
GYFTA-20~24Xn	20~24	4	4	127
GYFTA-26~30Xn	26~30	5	3	127
GYFTA-32~36Xn	32~36	6	2	127
GYFTA-38~42Xn	38~42	7	1	127
GYFTA-44~48Xn	44~48	8	0	127
GYFTA-50~60Xn	50~60	5	3	136
GYFTA-62~72Xn	62~72	6	2	136
GYFTA-74~84Xn	74~84	7	1	136
GYFTA-86~96Xn	86~96	8	0	136
GYFTA-98~108Xn	98~108	9	1	161
GYFTA-110~120Xn	110~120	10	0	161
GYFTA-122~132Xn	122~132	11	1	195
GYFTA-134~144Xn	134~144	12	0	195

Storage and operating temperature: -40℃ to +70℃.

Optical Characteristics

Fiber Type	Attenuation （+20℃）				Bandwidth		Numerical Aperture	Cable Cutoff Wavelength
Fiber Type	@850nm	@1300 nm	@1310nm	@1550nm	@850nm	@1300nm	Numerical Aperture	Cable Cutoff 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	---

Application: Duct, Aerial

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Loose Tube Stranded Non-Metallic Strength Member Unarmored Optical Cable (GYFTA)

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