Pluggable Optical Modules with Blind Mate Connectors
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Solution Overview
Problem
Co-packaged optics (CPO) applications face challenges such as reduced flexibility in optical interfaces, thermal issues, and reliability risks due to the close integration of lasers with other optical hardware, which complicates operational management and maintenance.
Innovation Solution
The design of a pluggable optical device with a housing, printed circuit board (PCB), blind mate optical connectors, and electrical contacts allows for remote placement of laser sources, enabling easier replacement and reducing thermal concerns, while maintaining high system density and compatibility with existing integration techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If lasers are co-located with other optical hardware in CPO applications, then integration density is improved, but thermal challenges and reliability risks worsen
Solution Approach 1:
The optical module is divided into separate functional components: laser sources, modulators, and other optical hardware are positioned as distinct elements on the PCB rather than being tightly integrated. This segmentation allows for improved thermal management and reduced reliability risks while maintaining integration density through strategic placement of these separate components.
2Device complexity
If lasers are co-located with other optical hardware in CPO applications, then integration density is improved, but thermal challenges worsen
Solution Approach 1:
Different regions of the PCB are designed with different thermal characteristics. Laser sources are positioned in areas with enhanced heat dissipation capabilities, while other optical components are placed in regions optimized for their specific thermal requirements. This local quality approach allows high integration density while managing thermal challenges through spatially differentiated thermal management strategies.
3Device complexity
If traditional CPO integration is used, then system density is improved, but flexibility for optical interfaces worsens
Solution Approach 1:
The PCB is designed with universal mounting configurations and standardized interface arrangements that can accommodate different types of optical components and configurations. This multi-functionality allows the same high-density platform to support various optical interface requirements, thereby maintaining flexibility while achieving system density.
4Device complexity
If lasers are tightly integrated with optical hardware, then system density is improved, but ease of replacement worsens
Solution Approach 1:
Laser sources are designed as separable, modular components that can be independently accessed and replaced on the PCB. This segmentation maintains high system density through compact layout while enabling easy replacement of laser sources without requiring disassembly of the entire optical assembly, thus improving ease of repair.
Data Source
AI summary
Aspects include a pluggable optical device and related optical system. The pluggable optical device comprises a housing, a printed circuit board (PCB) within the housing, and one or more blind mate optical connectors attached to the PCB along a first end of the PCB. The pluggable optical device further comprises one or more electrical contacts of the PCB near the first end, one or more external optical connectors arranged near a second end of the PCB opposite the first end, and one or more optical components attached to the PCB and included in optical paths extending between the one or more external optical connectors and the one or more blind mate optical connectors.