FIBER COUPLER: Fiber to Fiber Coupler

nLIGHT Fiber to Fiber Coupler (FFC) allows the interconnection between the feeding fiber of the laser source and the process fiber to the process head. The laser delivery fiber is thus detached from the processing head and the process fiber can be easily replaced in the field if damaged. High-quality fused silica optics guarantee low power loss and high beam quality. The FFC also includes an electronic board to control the interlock connection, to guarantee safety of the operator and of the FFC itself. The Fiber-to-Fiber Coupler is an eye-safe water-cooled unit with one input fiber (feeding fiber) and one output fiber(process fiber). The input block collimates the feeding fiber output beam, and the output block focuses the collimated beam into the delivery fiber. The onboard electronics incorporate the safety and coupler function via two hardware and firmware redundant sub-systems.