Optical module

The optical module comprises a circuit board and a tunable laser module, the tunable laser module comprises a packaging cavity, the side face of the packaging cavity is provided with a connecting pin and an optical fiber adapter, and the tunable laser module is directly and electrically connected with the circuit board through the connecting pin. A TEC is arranged on the side, relatively far away from the optical fiber adapter, in the packaging cavity, a ceramic substrate is arranged on the side, relatively close to the optical fiber adapter, in the packaging cavity, a gain chip, a collimating lens, a wavelength selection assembly and a wave locking assembly are arranged on the surface of the TEC, and a beam splitter, an isolator, a converging lens and a functional electric chip set are arranged on the surface of the ceramic substrate; according to the optical module, all the functional electric chips are arranged in the tunable laser module, then the tunable laser module is directly and electrically connecte