Optical Module Staggered Coupling Layout
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Solution Overview
Problem
The rapid growth in transmission speed of optical modules poses a challenge in arranging more optical elements in a smaller housing, necessitating an improved spatial layout to accommodate higher speeds and densities.
Innovation Solution
The optical module features a housing with a main circuit board and optical receiver assembly, including two sets of receiver-end photoelectronic chips and a receiver-end optical component set with a staggered arrangement of coupling components and an optical demultiplexer, allowing for a high-density layout by optimizing the spatial arrangement of components within the module.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If more optical elements are arranged in the optical module housing to accommodate higher transmission speeds, then the transmission speed is improved, but the housing size increases
Solution Approach 1:
The patent transitions from a traditional planar arrangement of optical components to a three-dimensional stacked configuration. The optical demultiplexer is positioned above the main circuit board, with coupling components vertically aligned to connect the demultiplexer output to photoelectronic chips on different layers. This vertical stacking in the Z-dimension enables higher component density without expanding the horizontal footprint of the housing, thus accommodating more optical elements for higher transmission speeds while maintaining compact housing size.
2Speed
If more optical elements are arranged in the optical module housing to accommodate higher transmission speeds, then the transmission speed is improved, but the device complexity increases
Solution Approach 1:
The optical module is segmented into distinct functional layers: the main circuit board layer containing photoelectronic chips, and the optical component layer containing the optical demultiplexer. This segmentation allows each layer to be optimized independently for its specific function while reducing the complexity of integrating all components in a single plane. The vertical separation simplifies the spatial layout by organizing components according to their functional relationships rather than forcing a two-dimensional arrangement.
3Quantity of substance
If coupling components are arranged in a staggered configuration at different distances from the main circuit board, then the spatial density is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The coupling components are nested within a standardized optical component set that includes the optical demultiplexer. This nested configuration provides a unified mounting structure and alignment reference system, where the demultiplexer serves as the primary alignment reference for positioning the coupling components at different vertical distances. This approach reduces manufacturing precision requirements by providing built-in mechanical constraints and alignment features, rather than requiring independent high-precision positioning of each coupling component.
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 enables a high-density layout, saving space and facilitating higher transmission speeds, while also simplifying assembly and reducing the risk of coupling errors by allowing independent assembly of components.
Implementation Method 1
a receiver-end optical component set for realizing an optical path connection between the receiver-end fiber optic port and the at least two sets of receiver-end photoelectronic chips
Data Source
AI summary
An optical module includes a housing extending in a lengthwise direction, as well as a main circuit board and an optical receiver assembly disposed in the housing. A plane on which the main circuit board is located is parallel to the lengthwise direction of the housing. The optical receiver assembly includes a receiver-end fiber optic port, at least two sets of receiver-end photoelectronic chips arranged side by side along the lengthwise direction, and a receiver-end optical component set including an optical demultiplexer and at least two coupling components located at an exit end of the optical demultiplexer. The at least two coupling components are arranged side by side along the lengthwise direction, and have different distances, respectively, to the plane on which the main circuit board is located along a first direction perpendicular to the plane on which the main circuit board is located.