Optical Transceiver Module Layout With EMI Shielding and Folded Paths
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Solution Overview
Problem
Existing optical modules face challenges with small size, high power consumption, and crosstalk between active components, particularly in high-speed communication networks, leading to increased costs and management complexity.
Innovation Solution
The optical module incorporates an EMI shielding that separates the optical transmitter and receiver assemblies, along with optical path folding elements to manage signal alignment and reduce crosstalk, while using a tunable optical transmitting unit to adjust wavelengths and minimize noise interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If optical transmitter and receiver assemblies are placed close together to reduce module size, then the module footprint is reduced, but crosstalk and EMI between assemblies increases
Solution Approach 1:
An EMI shielding structure is introduced as an intermediary element positioned between the optical transmitter assembly and optical receiver assembly. This shielding acts as a mediator that blocks electromagnetic interference and crosstalk while allowing the assemblies to remain in close proximity, thus reducing the overall module footprint without compromising signal integrity.
Solution Approach 2:
The internal space of the optical module is segmented into distinct regions using the EMI shielding structure. This segmentation creates separate electromagnetic zones for the transmitter and receiver assemblies, enabling compact arrangement while preventing harmful electromagnetic coupling between the two assemblies.
2Area of stationary object
If traditional optical paths are used without folding elements, then the optical alignment is simpler, but the module size increases due to larger internal space requirements
Solution Approach 1:
Optical path folding elements are employed to change the spatial arrangement of the optical path from a straight linear configuration to a folded multi-dimensional path. This allows the optical components to be positioned more compactly within the module while maintaining proper optical alignment through the folded paths, thereby reducing the internal space requirement without excessive complexity.
3Productivity
If fixed wavelength optical transmitting units are used, then the device complexity is reduced, but bandwidth and transmission rate are limited
Solution Approach 1:
A tunable optical transmitting unit is implemented that can dynamically adjust its operating wavelength. This dynamic capability enables the system to adapt to different communication channels and conditions, thereby increasing bandwidth and transmission rate while the overall device complexity is managed through integration with existing optical module components.
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 reduces crosstalk and noise interference, enhances bandwidth and transmission rate, and optimizes space utilization with lower power consumption.
Implementation Method 1
The EMI shielding is accommodated in the housing, and the optical transmitter assembly and the optical receiver assembly are located on opposite sides of the EMI shielding, respectively
Implementation Method 2
The first optical path folding element has a first reflective surface and a second reflective surface, and the second optical path folding element has a third reflective surface
Data Source
AI summary
The present disclosure provides an optical module, including a housing, an optical transmitter assembly, an optical receiver assembly, and an EMI shielding. The optical transmitter assembly is accommodated in the housing. The optical transmitter assembly includes an optical transmitting unit and an optical modulator, and the optical modulator is optically coupled to the optical transmitting unit. The optical receiver assembly is accommodated in the housing. The EMI shielding is accommodated in the housing, and the optical transmitter assembly and the optical receiver assembly are located on opposite sides of the EMI shielding, respectively.