Electromagnetic shielding assembly, base and optical module

The invention relates to the technical field of optical communication, and provides an electromagnetic shielding assembly which comprises an optical port end arranged at an optical port of an optical module base and an EMI baffle capable of being installed on the optical port end, the EMI baffle is provided with a first opening allowing an optical fiber to penetrate through, and the optical port end is provided with a second opening corresponding to the first opening. And the optical fiber passes through the second opening and the first opening in sequence. The base comprises the electromagnetic shielding assembly, and the optical port end is arranged at the optical port of the base. The optical module comprises the electromagnetic shielding assembly. According to the optical module, a good electromagnetic shielding effect can be achieved through the EMI baffle plate and the EMI baffle strip, and the electromagnetic shielding capability of the optical module is improved. 本发明涉及光通信技术领域，提供了一种电磁屏蔽组件，包括设在光模块底座光口处的