An optical connector defining a receiving space for receiving a corresponding plug includes an insulative housing, an optical module mounted to the insulative housing, a rotary door retained at a rear side of the receiving space and a slider engaging with the door. The optical module has a light receiving element forwardly exposed to the receiving space and shielded by the door. The slide can drive the door moving along an inserting direction, and rotating along an anticlockwise direction at the same time to make the light receiving element of the optical module be exposed to the receiving space when the plug is inserted into the receiving space and pushes the slider backwardly.