Sending and receiving optical component and optical module

The invention discloses a sending and receiving optical component and an optical module. The sending and receiving optical component includes a sending device, a receiving device and a filtering device, wherein the sending device and the filtering device are integrated into the same chip and the receiving device is fixed on the outer surface of the chip; on one aspect, the sending device sends optical signals and transmits the optical signals to the outside through the filtering device; on the other aspect, optical signals which are transmitted from the outside are reflected into the receiving device through the filtering device. The optical module is provided with the sending and receiving optical device. Because the receiving device is arranged externally on the outer surface of the chip and the sending device is integrated into the chip, the possibility that the optical signals may generate cross-talk to the receiving device is reduced greatly and the influence on the receiving performance of other optical signals of the receiving device are further reduced or eliminated. Moreover, the sending and receiving optical component is simple in structure, smaller in the size of the chip and lower in cost.