TAILIEUCHUNG - Datasheet - FO - Cable - Armor Direct Burried

Tham khảo tài liệu 'datasheet - fo - cable - armor direct burried', công nghệ thông tin, tin học văn phòng phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Direct Buried cable TECHNICAL SPECIFICATIONS We would like to comment the technical aspects as follows: Our proposed offer fully complies with ITU-T , IEC, EIA standards and has the following characteristics: CABLE DESIGN - fibres. - Operating wavelength at 1310nm and 1550nm. - Non-metallic central member. - Loose buffer tubes (dual layer design) SZ stranded. - Interstices and buffer fully filled. - Dielectric strength member. - Inner PE sheath. - Corrugated steel tape for superior rodent protection. - Outer PE jacket. - Suitable either as Direct Buried and Ducted application (DB) OPTICAL AND MECHANICAL CHARACTERISTICS OF A SINGLE MODE FIBRE Refractive index profile: step Design: matched cladding Coating diameter: 245 µm ± 5 µm Cladding diameter: 125 µm ± 1 µm Mode field diameter (1310nm): µm ± µm Mode field diameter (1550nm): µm ± 1 µm Mode field concentricity error: ≤ µm Cladding non circularity: ≤ 1% Effective group index of refraction Neff(1310nm): Effective group index of refraction Neff(1550nm): Numerical aperture: Cut off wavelength of cabled fibre: ≤ 1250 nm Attenuation at 1310nm (nominal): dB/km Attenuation at 1550nm (nominal): dB/km Dispersion in the 1285 to 1330nm window: ≤ ps/nm x km Dispersion at 1550nm: ≤ 18 ps/nm x km Zero dispersion wavelength ≤ λo ≤ nm Zero dispersion slope ≤ ps/() Polarization Mode Dispersion (PMD) ≤ ps/sqrt(Km) Fibre Curling length ≥ 4 m Page 1 of 6 CORE MATERIAL The core of the fibre optic, with a higher refractive index compared to the cladding, is made of SiO2 (Silicon dioxide) doped with GeO2 (Germanium dioxide). CLADDING MATERIAL The cladding of the fibre optic is made of SiO2 (Silicon dioxide). TYPE OF PRIMARY COATING The primary coating is made of an UV-curable acrylate. It is applied in two layers, each of a different Young’s modulus. The inner layer is somewhat softer than the outer one. This coating protects the fibre against .

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