According to one implementation an assembly is provided that includes an end emitting optical that is configured to end emit bacterial disinfecting light. A portion of the length of the end emitting optical fiber resides in a lumen of a body. The body has an internal disinfecting target area. The end emitted bacterial disinfecting light is configured to impinge on one or more surfaces disposed on or in the body, the one or more surfaces being configured to alter the trajectory of the bacterial disinfecting light so that the bacterial disinfecting light is directed toward the disinfecting target area via a designated disinfecting light pathway.
