Optical Subassembly Alignment via Monolithic Connector Block
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Solution Overview
Problem
Conventional optical transceivers suffer from poor wiggle performance, alignment issues with optical subassemblies and ports, and electromagnetic interference (EMI), which can hinder communication via optical fibers.
Innovation Solution
A communications device with a monolithic connector block and optical subassembly design, featuring a recessed mount and nosepiece configuration that uses adhesives for secure alignment and includes an EMI shield to reduce interference, facilitating better alignment and signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional optical transceivers use separate TOSA and ROSA positioned within a housing, then the device can perform optical transmission and reception, but the alignment between optical subassemblies and ports becomes difficult, resulting in poor wiggle performance and communication issues
Solution Approach 1:
The patent combines the TOSA and ROSA into a single integrated optical subassembly unit with a unified mount structure. The mount includes a recessed portion that simultaneously receives both the TOSA and ROSA, aligning them relative to each other and to the connector block ports. This integration eliminates alignment difficulties between separate subassemblies and improves wiggle performance.
Solution Approach 2:
The patent introduces a recessed portion in the mount as an intermediary structure between the optical subassemblies and the connector block. This recessed portion provides a precise mechanical interface that facilitates accurate alignment of the TOSA and ROSA nosepieces with the connector block ports, solving the alignment problem without requiring complex adjustment mechanisms.
2Ease of manufacture
If conventional optical transceivers use separate TOSA and ROSA with individual mounting, then the device can be assembled, but electromagnetic interference is undesirably produced, affecting signal quality
Solution Approach 1:
The patent combines the TOSA and ROSA into a single integrated optical subassembly with a common mount structure. This integration allows for unified EMI shielding and grounding, reducing electromagnetic interference between the transmitter and receiver circuits while simplifying the overall assembly process.
3Adaptability or versatility
If conventional optical transceivers use separate mounting structures for TOSA and ROSA, then each subassembly can be independently positioned, but the overall device complexity increases and alignment with optical fiber connectors becomes difficult
Solution Approach 1:
The patent merges the mounting structures for TOSA and ROSA into a single integrated mount with a recessed portion. This unified mount simplifies the overall device structure while maintaining the ability to position both subassemblies correctly through the shared recessed interface with the connector block.
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
The solution enhances alignment precision, reduces electromagnetic interference, and improves communication reliability by securely connecting optical subassemblies to the connector block within a housing, ensuring effective transmission of optical signals.
Implementation Method 1
The method may comprise using an adhesive to secure the optical subassembly to the connector block.
Data Source
AI summary
A communications device may include a connector block. The connector block may include a port. The port may be sized and configured to couple an optical fiber plug. The communications device may include an optical subassembly that may be connected to the connector block. The connector block may include a mount. The mount may be sized and configured to align the connector block and the optical subassembly. The mount may be configured as an EMI shield.