The present document describes an interface connector handle for connecting a first optical fiber to a second optical fiber. The first optical fiber is substantially centered within a proximal portion of a guidewire tubing. The second optical fiber is routed through and extending from an optical interface cable. The interface connector handle comprises a biasing assembly for urging one of the first optical fiber and the second optical fiber toward the other one of the first optical fiber and the second optical fiber resulting in a contact therebetween