Optical module

The optical module provided by the utility model comprises an optical fiber adapter; the optical fiber adapter comprises a body and an optical fiber insertion core arranged in the body, the body is a metal body, and the optical fiber insertion core is a metal optical fiber insertion core and can be directly connected with the light receiving device or the light emitting device in a welded mode. The optical fiber insertion core comprises a fixed through hole section, a guide through hole section and a nesting through hole section, and the fixed through hole section is used for fixing and limiting an optical fiber and ensuring a light emitting or light entering position; the apertures of the fixed through hole section, the guide through hole section and the nesting through hole section are sequentially increased, so that when an optical fiber penetrates into the thinner fixed through hole section from the thicker nesting through hole section, the optical fiber can easily penetrate through the fixed through hole