Optical Fiber Connection Assembly for Thermal Mismatch and Bend Protection
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Solution Overview
Problem
Optical connection components face issues such as peeling from substrates due to thermal expansion coefficient mismatches and damage to optical fibers from excessive bending, leading to inappropriate signal transmission.
Innovation Solution
The optical connection component includes a boot with through holes for optical fibers, a support member with aligned holes, and a positioning member with controlled thermal expansion, along with adhesives for secure fixation, ensuring minimal thermal expansion mismatch and protecting fibers from excessive bending.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the holding member is fixed to the substrate using adhesive, then the optical connection component can be assembled, but the component peels off from the substrate due to thermal expansion coefficient mismatch when heat is applied
Solution Approach 1:
The patent changes the thermal expansion parameter by selecting a positioning member material (glass) with a thermal expansion coefficient (1×10−6/K to 1×10−5/K) that closely matches the substrate material (silicon), thereby reducing thermal stress and preventing peeling during heating processes
Solution Approach 2:
The positioning member acts as an intermediary between the substrate and the holding member, providing a thermal expansion bridge that reduces the mismatch between the silicon substrate and the adhesive-bonded components, thereby preventing peeling while maintaining bonding stability
2Volume of moving object
If the optical fiber is bent to achieve a low profile, then the overall height is reduced, but the optical fiber may be damaged due to excessive bending
Solution Approach 1:
The boot is positioned beforehand to provide cushioning and support to the optical fiber at the critical bending location, preventing excessive bending stress and damage while enabling the fiber to achieve a low-profile configuration
Solution Approach 2:
The boot acts as a flexible protective shell that conforms to the bent shape of the optical fiber, providing mechanical support and protection against excessive bending while allowing the desired low-profile configuration
3Manufacturing precision
If the optical fiber is inserted through the boot and held by the holding member, then the fiber is positioned, but the fiber may be damaged due to excessive bending stress
Solution Approach 1:
The boot provides beforehand cushioning to the optical fiber at the insertion point, supporting the fiber as it passes through and preventing excessive bending stress that would occur without this protective element, thereby enabling precise positioning without damage
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 prevents peeling from substrates and reduces fiber damage, enabling efficient and appropriate optical signal transmission.
Implementation Method 1
A thermal expansion coefficient of the positioning member is 1×10−6/K to 1×10−5/K
Data Source
AI summary
An optical connection component includes a plurality of optical fibers, a boot being provided with a first through hole into which the plurality of optical fibers are inserted, a support member configured to accommodate the boot, and a positioning member being provided with a plurality of holes into each of which an end portion of a corresponding one of the plurality of optical fibers exposed from the boot is inserted. A thermal expansion coefficient of the positioning member is 1×10−6/K to 1×10−5/K.