The Fiber Coupling Unit (FCU) is an interface between the high power laser source and the fiber optic cable. The collimated beam from the laser is focused inside the FCU into the fiber core. The FCU handles required safety functions and includes sensors for improved supervising. The unit is easily integrated to the laser.

This product is compatible with: QB, QD and Q5 fiber optic cables.


  • Fast Fiber Break Detection (FFBD) sensor
  • Absolute temperature sensor
  • Control and Safety Electronics
  • Air-cooled unit

Tech spec

Focal lengths  50, 60, 70, 85, 100 mm
Lasers  Green lasers, Nd:YAG, Fiber lasers, Diode lasers
Max. collimated beam  Ø18 mm (incl. 99% of the beam energy)
Max. power  4.5 kW
Optics material  Synthetic fused silica

For more information - ask for the manual!

FCU 2015
The FCU is built as a half FFC ac.
To Top