GYDTA Loose Tube Optical Fiber Cable

Description
The GYDTA loose tube optical fiber cable is a self-supporting fiber optic cable which can be laid overhead. We provide different fiber counts, including 4 core, 6 core, 8 core and 12 core according to the requirements provided by customers. The attenuation of this fiber cable is 1.0dB while it transmits at the wavelength of 1300nm and the bandwidth of the fiber cable is 1000MHz.km.

Standard
The structure of the GYDTA loose tube optical fiber cable is to combine ribbon fiber optics whose radius is 250μm inside the loose tube which is made of high modulus materials. And the loose tube is filled with waterproof compound. In the center of the cable core is a metallic strength member which is sometimes sheathed with PE for cable with particular fiber cores. The loose tube strands the central strength member to be a compact and round cable core. The waterproof fillers fill up the gap inside the cable core. The APL is longitudinally wrapped and sheathed with polyethylene to form the cable.

Technical Parameters

cable type (increase by 2 fibers)	fiber count	tubes	fillers	cable diameter (mm)	cable weight (kg/km)	tensile strength long/short term (N)	crush resistance long/short term (N/100mm)	bending radius dynamic/static (mm)
GYDTA16-96	4	1-4	0-3	19.1	192	600/1500	300/1000	10D/20D
GYDTA24-144	6	1-4	0-3	19.1	223	600/1500	300/1000	10D/20D
GYDTA150-180	6	5-6	0-1	19.1	245	600/1500	300/1000	10D/20D
GYDTA186-216	6	5-6	0-1	19.1	280	600/1500	300/1000	10D/20D
GYDTA222-288	6	5-6	0-1	19.1	348	600/1500	300/1000	10D/20D
GYDTA48-192	8	1-4	0-3	19.1	270	600/1500	300/1000	10D/20D
GYDTA200-240	8	5-6	0-1	19.1	290	600/1500	300/1000	10D/20D
GYDTA48-288	12	1-4	0-3	19.1	317	600/1500	300/1000	10D/20D
GYDTA300-432	12	4-6	2-0	24	444	600/1500	300/1000	10D/20D
storage/operating temperature: -40℃ to +70℃

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Optical Properties

		G652	G655	50/125UM	62.5/125UM
attenuation (+20℃)	@850nm			≤0.30db/km	≤3.3db/km
	@1300nm			≤1.0db/km	≤1.0db/km
	@1310nm	≤0.36db/km	≤0.40db/km
	@1550nm	≤0.22db/km	≤0.23db/km
bandwidth (A grade)	@850nm			≥500MHz.km	≥200MHz.km
	@1300nm			≥1000MHz.km	≥600MHz.km
numerical aperture				0.200±0.015NA	0.275±0.015NA
cable cut-off wavelength λcc		≤1260nm	≤1450nm
application: self-supporting aerial laying

Features The specially designed and close-knit cable structure of the GYDTA loose tube optical fiber cable can prevent the casing from retracting effectively. The PE sheath has great anti-UV radiation performance. The GYDTA loose tube optical fiber cable has great mechanical behavior and temperature characteristics. The material of the loose tube has great hydrolysis resistance and higher strength. A kind of special grease fills up the loose tube to provide the fiber optic with critical protection.

The following measures are adopted to ensure the waterproof performance of the optical cables

Using single steel wire as central strength member. Filling up the loose tube with special waterproof compound. Using double sided PSP to improve the moisture resistance of the optical fiber cables. Using APL as a moisture barrier.