An optical transceiver including a photonic integrated circuit component, an electric integrated circuit component and an insulating encapsulant is provided. The photonic integrated circuit component includes at least one optical input/output portion configured to transmit and receive optical signal. The electric integrated circuit component is disposed on and electrically connected to the photonic integrated circuit component. The insulating encapsulant covers the at least one optical input/output portion of the photonic integrated circuit component. The insulating encapsulant laterally encapsulates the electric integrated circuit component. The insulating encapsulant is optically transparent to the optical signal.