Fiber Optic Rotary Joint adopts fiber optic as media, providing the best technical solution for the transmission of data. Fiber Optic Rotary Joint is especially suitable for equipments that require unlimited, continuous or intermittent rotation, transmit- ting large capacity of data and signals from the stationary position to the rotary position. It can improve mechanical performance, simplify system operation, and avoid damage to fiber optic due to the rotation of moving joints. The fiber optic rotary joint can be used together with a traditional electric slip ring, so as to make a photoelectric hybrid slip ring for the transmission of power and high speed data.