Optical Receiver Packaging Device for Mass Production Alignment
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Solution Overview
Problem
The complexity of precise optical element positioning in parallel transceiver optical modules hinders mass production due to high precision requirements and numerous optical package elements, making the process costly and difficult to scale.
Innovation Solution
A packaging device with a housing featuring grooves and slopes for mechanical alignment, combined with an active coupling method using a collimating lens and ceramic rod, reduces the number of optical elements to be positioned, simplifying the alignment process and enabling mass production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple optical package elements are used in parallel transceiver optical modules, then the transmission bandwidth is improved, but the device complexity and positioning precision requirements increase significantly
Solution Approach 1:
The patent integrates multiple optical elements (collimating lens, demultiplexer, focusing lens array, and PD array) into a single integrated optical module housing. The housing contains all these elements in a unified structure, eliminating the need for separate coupling of multiple independent optical packages. This merging approach maintains the high transmission bandwidth capability while significantly reducing the overall device complexity and the number of separate optical package elements that need to be positioned and aligned.
Solution Approach 2:
The housing structure serves multiple functions simultaneously: it provides mechanical support for all optical elements, establishes the optical path through integrated design, provides alignment references for positioning, and protects the sensitive optical components. This multi-functional housing reduces the need for separate structural components and simplifies the overall device architecture while maintaining high transmission bandwidth performance.
2Reliability
If precise positioning of each optical component is required, then the coupling efficiency is improved, but the manufacturing precision requirements and process complexity increase
Solution Approach 1:
The housing is pre-designed with integrated positioning structures and alignment references that automatically ensure correct positioning of optical components during assembly. The collimating lens, demultiplexer, focusing lens array, and PD array are all pre-positioned within the housing using built-in mechanical references, eliminating the need for complex post-assembly alignment procedures. This preliminary action approach maintains high coupling efficiency while significantly reducing manufacturing precision requirements.
Solution Approach 2:
The housing acts as an intermediary structure that provides fixed reference positions for all optical components. Instead of requiring direct high-precision coupling between multiple independent optical packages, the housing mediates the positioning by providing a unified reference frame. This intermediary structure simplifies the positioning process while ensuring the necessary coupling efficiency through its integrated design.
3Adaptability or versatility
If multiple optical elements are coupled in free space, then the optical path flexibility is improved, but the process control requirements and installation deviation sensitivity increase
Solution Approach 1:
The optical path is segmented into distinct functional sections within the housing, with each section (collimating lens area, demultiplexer area, focusing lens array area, PD array area) independently positioned using housing-integrated references. This segmentation allows each component to be optimized for its specific function while the housing ensures proper relative positioning, reducing process control requirements compared to free-space coupling of multiple independent packages.
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 solution significantly reduces the complexity of optical alignment, facilitating mass production and lowering the cost of optical packaging by using mechanical structure alignment and active coupling in the packaging device for single optical multiplexed parallel optical receiver coupling systems.
Implementation Method 1
The second slope is provided with a reflective film
Implementation Method 2
the other end of the collimating lens passes through the through hole to the first groove
Implementation Method 3
The third groove is provided with a lens array having multiple channels
Data Source
AI summary
The present invention provides a packaging device of single optical multiplexed parallel optical receiver coupling system component, comprising a housing having a transmission function, an adapter component and collimating lens. The upper surface of the housing is provided with a first groove and a second groove, the lower surface of the housing is provided with a third groove. One end of the housing is provided with a through hole which communicates with the first groove. One end of the collimating lens is connected with the adapter component, and the other end of the collimating lens passes through the through hole to the first groove. A first slope and a second slope are respectively provided on the adjacent side wall between the first groove and the second groove. The second slope is provided with a reflective film. The third groove is provided with a lens array having multiple channels. The packaging device by mechanical structure alignment and active coupling method so as to greatly reduce the number of optical elements required to be accurately positioned on the optical path in the parallel transceiver optical module, greatly simplify the optical alignment process, more easily realize mass production of the optical packaging of corresponding products, which reduces the cost of the optical packaging of corresponding products.