An optical fiber socket includes a hollow insulative housing, two openings in a bottom face of the insulative housing for receiving two optical fiber plugs and two illuminating elements accommodated inside the insulative housing for connection with the optical fiber plugs. The insulative housing has a first baffle and a second baffle to divide the insulative housing into a first receiving space for receiving therein one illuminating element, a second receiving space for receiving therein the other illuminating element. Terminals are provided to engage with the illuminating element in the first receiving space and have elongated ends extending out of the insulative housing thereof such that two optical fiber plugs in connection to the insulative housing are able to complete information input/output.