Hermetically sealed optical feedthroughs allow optical signals to be guided into a pressure vessel or vacuum chamber. The bulkhead option has a connector on each side and the inline version reduces the optical losses by having a permanently connected optical fibre extending each side of the feedthrough to minimise the numbers of connections.
In both cases the hermetic seal is maintained even when an optical fibre is not connected. We offer a range of solutions to match to the optical fibre and application requirements. For HV and UHV applications epoxies or adhesives may not be suitable. We offer a brazed solution with metal coated optical fibres that avoids the use of these products and can also withstand high temperatures. By using the same brazing technique for the connectors at the ends of the optical fibres, the complete assembly can be heated to bake out temperatures (typically over 200oC).
This solution is also suitable for high power lasers, with a range of fibre types and optical connectors available. The feedthroughs can be mounted on a KF or CF flange.