Loose Tube Stranded Unarmored Optical Cable (GYTA)

The GYTA 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 metallic strength member; 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 GYTA optical cable complies with YD/T 901 and IEC 60794-1 standards. Features • Excellent mechanical performance and temperature characteristics • 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 steel wire 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) GYTA-2~6Xn 2~6 1 4 76 600/1500 300/1000 10D/20D GYTA-8~12Xn 8~12 2 3 76 GYTA-14~18Xn 14~18 3 2 76 GYTA-20~24Xn 20~24 4 1 76 GYTA-26~30Xn 26~30 5 0 76 GYTA-32~36Xn 32~36 6 0 85 GYTA-38~48Xn 38~48 4 1 90 GYTA-50~60Xn 50~60 5 0 90 GYTA-62~72Xn 62~72 6 0 113 GYTA-74~84Xn 74~84 7 1 136 GYTA-86~96Xn 86~96 8 0 136 GYTA-98~108Xn 98~108 9 1 163 GYTA-110~120Xn 110~120 10 0 163 GYTA-122~132Xn 122~132 11 1 190 GYTA-134~144Xn 134~144 12 0 190 GYTA-146~216Xn 146~216 13~18 5~0 190 GYTA-288Xn 288 24 0 239 Storage and operating temperature: -40℃ to +70℃. Optical Characteristics Fiber Type Attenuation （+20℃） Bandwidth Numerical Aperture Cable Cutoff Wavelength @850nm @1300nm @1310nm @1550nm @850nm @1300nm 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

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)
GYTA-2~6Xn	2~6	1	4	76	600/1500	300/1000	10D/20D
GYTA-8~12Xn	8~12	2	3	76
GYTA-14~18Xn	14~18	3	2	76
GYTA-20~24Xn	20~24	4	1	76
GYTA-26~30Xn	26~30	5	0	76
GYTA-32~36Xn	32~36	6	0	85
GYTA-38~48Xn	38~48	4	1	90
GYTA-50~60Xn	50~60	5	0	90
GYTA-62~72Xn	62~72	6	0	113
GYTA-74~84Xn	74~84	7	1	136
GYTA-86~96Xn	86~96	8	0	136
GYTA-98~108Xn	98~108	9	1	163
GYTA-110~120Xn	110~120	10	0	163
GYTA-122~132Xn	122~132	11	1	190
GYTA-134~144Xn	134~144	12	0	190
GYTA-146~216Xn	146~216	13~18	5~0	190
GYTA-288Xn	288	24	0	239

Fiber Type	Attenuation （+20℃）	Bandwidth	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	---

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