Singlemode Optical Fibre For wavelength of 633, 780, 850 und 1310 / 1550 nm fibre core fibre cladding fibre primary coating Technical data Fibre type SM 633 / 125 PI SM 780 / 125 PI SM 850 / 125 PI SM 1310 / 125 PI Fiber core diameter 3.7 µm 4.6 µm 4.9 µm 8.0 µm Mode field diameter 4.4 µm 5.5 µm 5.9 µm 9.5 µm Wavelenght in operation 633 nm 780 nm 850 nm 1310 / 1550 nm Cut-off wavelength 580 nm 720 nm 770 nm 1260 nm Attenuation ≤ 12 dB / km ≤ 6 dB / km ≤ 5 dB / km 1310 nm: ≤ 0.8 dB / km 1550 nm: ≤ 0.5 dB / km n Fibre core material: fused silica (SiO2), doped with GeO2 n Fibre cladding material: fused silica (SiO2), diameter: 125 µm n Fibre primary coating material: polyimide, acrylate (metal coating on request) diameter: 145 µm (polyimide), 245 µm (acrylate) temperature range: - 190 to 385°C (polyimide), - 40 to 85°C (acrylate) n Bending radius n short-term: 12.5 mm n long-term: 75 mm n Numerical aperture 0.12 n n n n n n Order information Order text: 1 2 3 4 Order text position Flange type Fibre Connector Feedthroughs number CF16, CF40, 63CF, W (without flange) SM633, SM780, SM840, SM1310 FCAPC, FCPC (does not apply to W) www.vacom.de VACOM Vakuum Komponenten & Messtechnik GmbH    Gabelsbergerstraße 9    07749 Jena    Germany Tel. +49 3641 4275-0  