Casing Feed-Throughs
The fiber cables with casing feed-through made by Schäfter+ Kirchhoff are equipped with Single-mode fibers, polarization- maintaining single-mode or multi-mode fibers for wave lengths from 360 to 1800 nm (in case of Single-mode: cut off wavelengths 360 - 1550 nm).
For the available fiber and connector types, see Tables 2, 3 and 4, page 52 ff.
Inside the casing, the fiber cables have a Ø 900 μm buffer made of Hytrel. Outside the casing, there is a Ø 3 mm cable with Kevlar strain-relief at the fiber connector and at the flange.The cable feed-through CFT is installed by threading the outside part of the cable through an aperture from the inside of the casing.
For casing feed-throughs with single-mode fibers, the outside connector can be core-aligned (< 0.5 μm) as an option.
Single-mode and polarization-maintaining casing feed-thoughs can be equipped with end caps for reducing the power density at the fiber end-face (see CFT-E).