Optical Fiber Connection Component for Reflow Mounting Alignment
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Solution Overview
Problem
Conventional reflow mounting technology for optical devices on BGA packages is hindered by long pigtail optical fibers, which lack heat resistance and complicate high-speed, mass-productive mounting due to inaccurate alignment and fiber connection issues.
Innovation Solution
An optical fiber connection component with fiber guide holes and grooves for precise alignment and adhesive fixation, allowing optical fibers to be inserted after initial alignment and reflow mounting, enabling high-speed, cost-effective assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If reflow mounting technology is used for high-speed automated assembly, then productivity and mass productivity are improved, but the long pigtail optical fiber lacks heat resistance and cannot withstand the reflow furnace temperature
Solution Approach 1:
The optical fiber connection is divided into two separate stages: (1) connection of the optical fiber to the planar lightwave circuit before reflow mounting, and (2) connection of the pigtail optical fiber to the connector after reflow mounting. This segmentation allows each stage to be optimized independently, resolving the contradiction between heat resistance requirements and automated assembly speed.
Solution Approach 2:
The optical fiber is connected to the planar lightwave circuit in advance (before reflow mounting) using precise alignment and UV adhesive bonding. This preliminary action ensures that the heat-sensitive pigtail optical fiber is not exposed to reflow furnace temperatures, while still enabling high-speed automated assembly of the BGA package.
2Ease of operation
If long pigtail optical fiber is used for connection, then ease of operation is improved, but the fiber hinders automated mounting operation and reduces productivity
Solution Approach 1:
The optical fiber connection is divided into two separate stages: (1) connection of the optical fiber to the planar lightwave circuit before reflow mounting, and (2) connection of the pigtail optical fiber to the connector after reflow mounting. This segmentation allows each stage to be optimized independently, resolving the contradiction between heat resistance requirements and automated assembly speed.
Solution Approach 2:
The optical fiber is connected to the planar lightwave circuit in advance (before reflow mounting) using precise alignment and UV adhesive bonding. This preliminary action ensures that the heat-sensitive pigtail optical fiber is not exposed to reflow furnace temperatures, while still enabling high-speed automated assembly of the BGA package.
3Manufacturing precision
If conventional UV adhesive bonding is used for optical fiber connection, then manufacturing precision is improved, but the process complexity increases and mass productivity decreases
Solution Approach 1:
The optical fiber connection is divided into two separate stages: (1) connection of the optical fiber to the planar lightwave circuit before reflow mounting, and (2) connection of the pigtail optical fiber to the connector after reflow mounting. This segmentation allows each stage to be optimized independently, resolving the contradiction between heat resistance requirements and automated assembly speed.
Solution Approach 2:
The optical fiber is connected to the planar lightwave circuit in advance (before reflow mounting) using precise alignment and UV adhesive bonding. This preliminary action ensures that the heat-sensitive pigtail optical fiber is not exposed to reflow furnace temperatures, while still enabling high-speed automated assembly of the BGA package.
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
Facilitates fully automated, high-speed mounting of optical devices with reduced costs and improved mass productivity while maintaining optical characteristics comparable to conventional methods.
Implementation Method 1
a plurality of fiber guide holes into which optical fibers are insertable at intervals equal to intervals of a plurality of optical waveguides of a planar lightwave circuit; and grooves for demarcating an area provided with the plurality of fiber guide holes and an area coated with an adhesive in an end surface to be joined with the planar lightwave circuit
Data Source
AI summary
Provided is an optical fiber connection component in which an optical waveguide of a planar lightwave circuit and an optical fiber can be connected after a process using SMT and reflow mounting technology. The optical fiber connection component includes: a plurality of fiber guide holes into which optical fibers are insertable at intervals equal to intervals of a plurality of optical waveguides of the planar lightwave circuit; and grooves for demarcating an area provided with the plurality of fiber guide holes and an area coated with an adhesive in an end surface to be joined with the planar lightwave circuit. The plurality of optical waveguides and the plurality of fiber guide holes are respectively aligned and fixed to the planar lightwave circuit with the adhesive in advance.