Optoelectronic PCB Connections for Replaceable Laser Sources
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Solution Overview
Problem
The connection of lasers to optoelectronic modules requires significant space and involves replacing the entire module when the laser needs to be replaced, or requires two external connections, which is inefficient in terms of space utilization.
Innovation Solution
A connector system comprising a plug-in connector with a first electrical contact and a multi-fiber ferrule, and a housing with optical fibers, where the ferrule makes an optical connection before an electrical connection, allowing for a releasable and space-efficient connection of a laser source to a printed circuit board.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the laser is placed within the module, then the connection is simplified, but the entire module must be replaced when the laser needs to be replaced
Solution Approach 1:
The invention divides the module into separable components: a reusable module housing containing the optical engine and a replaceable laser connector assembly. This segmentation allows the laser to be replaced independently without replacing the entire module, resolving the contradiction between simplified connection and ease of repair.
Solution Approach 2:
The laser connector assembly is nested within the module housing, allowing it to be inserted and removed like a plug. This nested structure enables the laser to be positioned within the module for simplified connection while maintaining independent replaceability, thus resolving the contradiction.
2Ease of repair
If the laser is attached on the exterior of the module, then the laser can be replaced independently, but two connections are required which occupies valuable space
Solution Approach 1:
The invention merges the optical connection and electrical connection into a single integrated connector assembly. The laser connector includes both optical fibers for light transmission and electrical contacts for power/control signals, combining two separate connections into one unified interface that occupies less space while enabling independent laser replacement.
Solution Approach 2:
The connector assembly serves multiple functions simultaneously: it provides optical signal transmission through fibers, electrical power and control through contacts, and mechanical positioning. This multi-functionality reduces the number of separate connections needed, saving valuable space on the module exterior.
3Ease of operation
If optical and electrical connections are made simultaneously, then the connection process is simplified, but the laser may be damaged during connection
Solution Approach 1:
The connector is designed so that optical alignment features (ferrules) engage and establish optical connection before electrical contacts make contact. This preliminary optical alignment ensures the optical path is properly established before electrical power is applied to the laser, protecting it from damage while maintaining a simplified single-step connection process.
Solution Approach 2:
Instead of making electrical connections first and then optical connections, the invention inverts the sequence: optical connections are established first through ferrule engagement, followed by electrical contact. This reversed sequence protects the laser from electrical damage during the connection process while keeping the operation simple.
Data Source
AI summary
The present invention relates to the pluggable connection of an optoelectronic module with an optoelectronic connector assembly from a location exterior to the optoelectronic connector assembly. An optoelectronic module comprises a housing having a proximate end and a rear end in a longitudinal direction; a ferrule arranged adjacent to the proximate end of the housing; an electrical contact arranged adjacent to the proximate end of the housing and stacked with the ferrule in a vertical direction; a biasing members configured to bias the ferrule in the longitudinal direction once pressed; and a guiding member extending in the longitudinal direction and configured to guide the optoelectronic module connected to another optoelectronic module. The optoelectronic connection between the optoelectronic module and the optoelectronic connector assembly has blind mating features.