T. Theeg
H. Sayinc
J. Neumann
L. Overmeyer
D. Kracht

Pump and signal combiner for bi-directional pumping of all-fiber lasers and amplifiers

Opt. Express
Type: Zeitschriftenaufsatz (reviewed)
We developed an all-fiber component with a signal feedthrough capable of combining up to 6 fiber-coupled multi-mode pump sources to a maximum pump power of 400 W at efficiencies in the range of 89 to 95\%, providing the possibility of transmitting a high power signal in forward and in reverse direction. Hence, the fiber combiner can be implemented in al-most any fiber laser or amplifier architecture. The complete optical design of the combiner was developed based on ray tracing simulations and con-firmed by experimental results.