Optical Module Cage Heatsink Gasket for EMI Mitigation
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Solution Overview
Problem
Telecommunications devices with optical modules generate significant electromagnetic noise, which interferes with other components and exceeds regulatory emission limits as technology advances.
Innovation Solution
A cage housing the optical module, a heatsink that physically contacts and absorbs heat from the module, and a gasket between the heatsink and cage to reduce electromagnetic noise by forming a seal and enhancing shielding effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If optical module performance is improved, then communication capability is enhanced, but electromagnetic radiation increases and may exceed regulatory limits
Solution Approach 1:
The patent extracts the electromagnetic radiation problem by introducing a cage structure with electromagnetic shielding material that isolates the optical module from surrounding components. This separates the harmful electromagnetic radiation generated by high-performance optical modules from other sensitive components in the telecommunications device, allowing the optical modules to operate at higher performance levels without exceeding regulatory limits or interfering with other components.
Solution Approach 2:
The patent introduces an intermediary electromagnetic shielding material within the cage structure that acts as a mediator between the optical module and surrounding components. This shielding material absorbs and blocks electromagnetic radiation, preventing it from spreading to other components while allowing the optical module to maintain its high performance communication capabilities.
2Productivity
If optical module performance is improved, then communication capability is enhanced, but electromagnetic noise interferes with surrounding components
Solution Approach 1:
The patent extracts the electromagnetic noise problem by introducing a cage structure with electromagnetic shielding material that isolates the optical module from surrounding components. This separates the harmful electromagnetic radiation generated by high-performance optical modules from other sensitive components in the telecommunications device, allowing the optical modules to operate at higher performance levels without exceeding regulatory limits or interfering with other components.
Solution Approach 2:
The patent introduces an intermediary electromagnetic shielding material within the cage structure that acts as a mediator between the optical module and surrounding components. This shielding material absorbs and blocks electromagnetic radiation, preventing it from spreading to other components while allowing the optical module to maintain its high performance communication capabilities.
3Object-generated harmful factors
If cage structure is introduced for electromagnetic shielding, then electromagnetic noise is reduced, but device complexity increases
Solution Approach 1:
The patent applies multi-functionality by designing the cage structure to serve multiple purposes: it provides mechanical support and housing for the optical module while simultaneously incorporating electromagnetic shielding material to reduce electromagnetic noise. The heatsink structure also serves dual purposes of thermal management and electromagnetic shielding. This consolidation of functions reduces the need for separate components, thereby limiting the increase in device complexity while effectively addressing electromagnetic noise.
Solution Approach 2:
The patent merges the electromagnetic shielding function with the existing cage and heatsink structures. Instead of adding a separate shielding component, the shielding material is integrated into the cage structure that already provides mechanical support and housing. This merging approach effectively reduces electromagnetic noise while minimizing the increase in device complexity.
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
Effectively mitigates electromagnetic noise, preventing interference with other components and ensuring compliance with regulatory limits, even as optical module performance improves.
Implementation Method 1
a heatsink that (A) makes physical contact with the optical module via an opening of the cage and (B) absorbs heat generated by the optical module during operation
Implementation Method 2
a gasket that (A) resides between the heatsink and the cage and (B) reduces electromagnetic noise in connection with the operation of the optical module
Data Source
AI summary
The disclosed apparatus may include (1) a cage that (A) is coupled to a circuit board of a telecommunications device and (B) houses the optical module when the optical module is installed in the telecommunications device, (2) a heatsink that (A) makes physical contact with the optical module via an opening of the cage and (B) absorbs heat generated by the optical module during operation in the telecommunications device, and (3) a gasket that (A) resides between the heatsink and the cage and (B) reduces electromagnetic noise in connection with the operation of the optical module in the telecommunications device. Various other apparatuses, systems, and methods are also disclosed.