tailieunhanh - TECHNICAL SPECIFICATIONS

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 microbending losses and against abrasion. | KRONE Ducted 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 1310 nm and 1550 nm. - Non-metallic central member. - Loose buffer tubes dual layer design SZ stranded. - Interstices and buffer fully filled. - Dielectric strength member non-metallic - Outer PE jacket. - Suitable as METAL -FREE ducted cable DU . OPTICAL AND MECHANICAL CHARACTERISTICS OF A SINGLE MODE FIBRE Refractive index profile step Design matched cladding Coating diameter 245 5 Cladding diameter 125 1 Mode field diameter 1310nm Mode field diameter 1550nm 1 Mode field concentricity error 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 Zero dispersion slope Polarization Mode Dispersion PMD Fibre Curling length Xo nm ps ps sqrt Km 4m Page 1 of 6 KRONE 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 microbending losses and against abrasion. Fibre color coding Fibre 1 blue Fibre 7 red Fibre 2 orange Fibre 8 black Fibre 3 green Fibre 9 yellow