Fiber optic adapter is also called fiber optic coupler. Adapters are designed for multimode or singlemode cables. The singlemode adapters offer more precise alignment of the tips of the connectors (ferrules). It is used to provide a cable to cable fiber connection. Fongko provide a complete line of adapters for fiber optic connection, like ST, SC, FC, LC style fiber optic adapters for both multimode and single-mode fiber applications.