Optical Module Conductive Fiber Sheet for EMI Shielding Contact
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Solution Overview
Problem
Existing optical modules in optical communication systems face challenges in effectively shielding electromagnetic interference and ensuring stable electrical connections, particularly when integrated with optical network terminals.
Innovation Solution
The optical module incorporates a conductive fiber sheet and an elastic sleeve with a metal frame and metal elastic pieces to seal and connect the shell and elastic sleeve, providing comprehensive electromagnetic shielding and stable electrical contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional rigid connection structures are used between shell and elastic sleeve, then structural strength is improved, but electromagnetic shielding effectiveness deteriorates due to gaps and poor contact
Solution Approach 1:
The patent employs a conductive fiber sheet as a flexible shielding layer disposed between the shell and elastic sleeve. This thin film structure conforms to irregular surfaces and maintains continuous electrical contact, providing effective electromagnetic shielding while accommodating structural variations that rigid connections cannot address.
Solution Approach 2:
The patent combines conductive fibers with a sheet substrate to create a composite shielding material. This composite structure integrates the electrical conductivity needed for electromagnetic shielding with the flexibility and conformability of a sheet material, achieving both shielding effectiveness and adaptability to complex geometries.
2Object-affected harmful factors
If conductive fiber sheet is added for electromagnetic shielding, then electromagnetic interference shielding is improved, but device complexity increases
Solution Approach 1:
The conductive fiber sheet serves multiple functions simultaneously: it provides electromagnetic shielding, maintains electrical continuity between components, and acts as a flexible connector that accommodates misalignments. This multi-functionality reduces the need for separate shielding components, thereby limiting the increase in device complexity.
3Reliability
If metal elastic pieces are used for connection, then electrical conductivity is improved, but contact stability deteriorates due to wear and loosening over time
Solution Approach 1:
The conductive fiber sheet provides continuous, distributed contact across the interface between shell and elastic sleeve, replacing point-contact metal pieces. This distributed contact pattern prevents stress concentration and wear at specific points, maintaining electrical stability over extended periods while accommodating thermal expansion and mechanical deformation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration enhances electromagnetic interference shielding and ensures robust electrical connections, improving the performance and reliability of optical modules in optical communication systems.
Implementation Method 1
The conductive fiber sheet is disposed between the shell and the elastic sleeve for connecting the shell and the elastic sleeve
Implementation Method 2
The plurality of metal elastic pieces are disposed on an edge of the metal frame and extend to an outside of the metal frame
Implementation Method 3
The conductive fiber sheet is disposed between the shell and the elastic sleeve for connecting the shell and the elastic sleeve... This configuration enhances electromagnetic interference shielding
Data Source
AI summary
An optical module includes a shell, an elastic sleeve and a conductive fiber sheet. The shell has a groove disposed on an outer wall thereof. The elastic sleeve includes a metal frame and a plurality of metal elastic pieces. The metal frame is sleeved in the groove, and the metal frame is fixedly connected to the shell. The plurality of metal elastic pieces are disposed on an edge of the metal frame and extend to an outside of the metal frame. The conductive fiber sheet is disposed between the shell and the elastic sleeve for connecting the shell and the elastic sleeve.