Directional Coupler DIN-Female Used to separate or combine optical power of the same wavelength. It works by fusing conical fiber Directional Coupler DIN-Female. For multi-mode optical fibers, the Directional Coupler DIN-Female ratio depends on the length of the directional coupler and the thickness of the cladding. For single-mode fiber: the two fibers disappear and the energy exchange field...