Structure of 400G optical module

Abstract

The invention provides a structure of a 400G optical module, which is good in heat dissipation effect and has a good EMI shielding effect. The structure comprises a main heat dissipation shell, an auxiliary heat dissipation shell and a PCB, a control chip is arranged on the PCB, a laser is connected with the PCB, an optical component and an optical fiber array are sequentially arranged on the front side of the laser, and the optical fiber array is connected with an optical fiber; the structure further comprises a TEC refrigerator, the lower ends of the laser and the optical fiber array are clung to the TEC refrigerator, and the TEC refrigerator is arranged in a metal heat sink; and the structure further comprises a shielding cover, the shielding cover can seal the laser, the optical component and the optical fiber array under the shielding cover, the metal heat sink comprises an extension part extending to the rear side of the optical fiber array, optical fiber grooves corresponding tothe optical fibers are formed in the extension part, heat conduction gaskets are arranged at the lower end of the metal heat sink, the optical fiber grooves and the upper ends of the optical fiber grooves respectively, and the heat conduction gaskets are tightly attached to the main heat dissipation shell and the auxiliary heat dissipation shell respectively.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to a structure of a 400G optical module. Background technique [0002] As we all know, the core device of the optical module is the optical chip, and the current optical module is in the stage of rapid development. As the transmission rate is getting higher and higher, it is necessary to ensure that the optical module maintains stable working performance under a certain transmission distance and many harsh working conditions. , the optical chip needs to work within a certain temperature range. Therefore, a good heat dissipation channel is an essential component in the structural design of the optical module. [0003] At present, most of the 400G optical modules use electro-absorption modulated lasers (EML lasers). This type of laser is extremely sensitive to temperature and can only exert its effective performance within the specified operating temperature range. Ther...

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Problems solved by technology

[0008] At the same time, due to the presence of 4-channel optical fibers in the current 400G optical module, there must be openings on the shielding cover to avoid optical fibers, resulting in poor shielding effect of the optical module and poor EMI

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