Abstract: An optical coupler couples optical fibers carrying high energy signals. The coupler includes an adapter thaat interfaces two optical connectors. The optical connectors are positioned within the adapter to bring two optical fibers into optical communication. The optical connectors fit into the adapter in a manner than imposes a gap of at least 0.001 inch and preferably between 0.003 to 0.005 inch between the optical fibers. Moreover, the optical connectors include bevelled ferrules that provide additional space at the interface between the fibers. The gap and the space between the fiber work in conjunction to minimize damage to the fibers.