Optical Module Adaptor Fixation and EMI Shielding
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Solution Overview
Problem
Existing optical modules face challenges in maintaining efficient coupling of optical fibers due to relative movement between the adaptor and optical port components during vibration, leading to reduced reliability and increased electromagnetic interference.
Innovation Solution
The optical module design incorporates a housing with an adaptor and optical sub-module, featuring a through hole in the optical port component that allows the adaptor to pass through for secure fixation, and includes conductors to divide gaps between housing components, reducing electromagnetic radiation leakage and enhancing shielding effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the adaptor is fixed with the optical sub-module using conventional methods, then the assembly is simple to manufacture, but relative movement occurs during vibration leading to reduced coupling efficiency and reliability
Solution Approach 1:
The housing is divided into a first housing and a second housing that are detachably connected, allowing the optical port component to be independently positioned and fixed. This segmentation enables precise positioning of the adaptor relative to the optical sub-module while maintaining manufacturing simplicity through modular assembly.
Solution Approach 2:
An optical port component is introduced as an intermediary element between the adaptor and the housing. This component provides a stable mounting structure that prevents relative movement during vibration, thereby maintaining optical fiber coupling efficiency without significantly increasing overall device complexity.
2Object-affected harmful factors
If gaps between housing components are left open for ease of assembly, then manufacturing and assembly are simpler, but electromagnetic interference increases due to radiation leakage
Solution Approach 1:
Conductors are positioned within the housing to act as intermediaries that divide and shield the gaps between the first housing and second housing. These conductors reduce electromagnetic radiation leakage through the gaps while maintaining the detachable connection structure for ease of assembly and manufacturing.
Solution Approach 2:
The patent replaces purely mechanical gap closure with electromagnetic shielding using conductors. Instead of making the housing completely sealed mechanically, conductors are used to manage electromagnetic fields, allowing gaps to remain open for assembly while reducing EMI.
Data Source
AI summary
The embodiments of the present disclosure disclose an optical module, comprising a housing, an adaptor and an optical sub-module being provided inside the housing, the adaptor being fixed with the optical sub-module, wherein an optical port component is also provided inside the housing, the optical port component is located at one side of the adaptor far away from the optical sub-module, and an opening is formed at one end of the optical port component far away from the adaptor; a through hole for the optical port component is formed on an end surface of the optical port component close to the adaptor, the adaptor can pass through the through hole for the optical port component to be fixed with the optical port component, and an optical fiber can be inserted into the adaptor from the opening.