Transistor-outline package and preparation method thereof, optical sub-assembly, optical module, and optical network system

Abstract

Embodiments include transistor-outline packages, methods, optical sub-assemblies, and optical modules associated therewith. In some embodiments a transistor-outline package includes a transistor base, a transistor cap, a first lens, a light filtering assembly, a lens assembly, a first optical receiving chip, and a second optical receiving chip. The transistor base and the transistor cap are fastened to form an accommodation cavity. The first lens is disposed on the transistor cap, and the first optical receiving chip and second optical receiving chip are disposed on the transistor base. The lens assembly includes a second lens and a third lens. The light filtering assembly is disposed between the first lens and the lens assembly. The transistor-outline package receives and collimates a first light ray by using the first lens on the transistor cap, and the light filtering assembly splits the first light ray into a second light ray and a third light ray.