Optical Transceiver Holding Member Fiber Guidance
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Solution Overview
Problem
Existing optical transceivers face challenges with electrical connection reliability due to stress exceeding soldering strength and complex internal configurations, which complicate the guidance and connection of optical fiber cables as the number of components increases.
Innovation Solution
The optical transceiver design includes a holding member with guides for internal fibers, a circuit board with a stack connector for enhanced electrical connection reliability, and a housing that simplifies the internal structure by using a CFP8 module format with a receptacle for external optical connectors, reducing stress on connections and improving assembly efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the number of optical components is increased, then the transmission capacity is improved, but the complexity of guiding optical fiber cables increases
Solution Approach 1:
Multiple optical fiber cables are bundled together to form a single optical fiber cable assembly, which is then guided through a single routing path in the housing. This merging approach allows multiple optical components to be connected while maintaining simple cable guidance structure.
Solution Approach 2:
The optical fiber cables are routed through a three-dimensional space within the housing, utilizing vertical and lateral dimensions to create efficient pathways. The cables extend from the rear surface along sidewalls and through designated routing paths, optimizing spatial utilization.
2Area of stationary object
If the pitch between terminals is reduced, then the space utilization is improved, but the electrical connection reliability deteriorates due to stress exceeding soldering strength
Solution Approach 1:
The electrical connection system is segmented into multiple independent connection points distributed across the circuit board. By spacing these connection points appropriately and using a rigid circuit board structure, mechanical stress is distributed rather than concentrated, maintaining soldering strength despite compact terminal arrangement.
Solution Approach 2:
The circuit board is designed with locally optimized properties including reinforced solder joint areas and strategically positioned support structures. The board thickness and material properties are tailored in specific regions to provide enhanced mechanical support where electrical connections are made, ensuring reliability while maintaining compact pitch.
3Adaptability or versatility
If the number of components accommodated is increased, then the functionality is improved, but the productivity deteriorates due to complicated internal configuration
Solution Approach 1:
The optical transceiver is divided into distinct functional modules: optical components mounted on a rear surface, a circuit board for electrical processing, and a housing with integrated cable management. This modular segmentation allows each module to be assembled and tested independently before final integration, significantly improving productivity while accommodating multiple optical components.
Solution Approach 2:
The housing structure serves multiple functions simultaneously: it provides mechanical protection for internal components, establishes precise spatial relationships between components, guides and protects optical fiber cables, and provides mounting surfaces for optical components. This multi-functionality reduces the need for additional specialized structures, simplifying assembly.
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 design enhances the reliability of electrical connections, simplifies the internal configuration, and improves the handling and guidance of optical fibers, leading to increased productivity and transmission capacity with reduced stress on components.
Implementation Method 1
a TOSA that converts a first electrical signal into an a first optical signal
Implementation Method 2
an ROSA that converts an second optical signal into a second electrical signal
Implementation Method 3
an internal fiber for transmitting the optical signal
Data Source
AI summary
An optical transceiver includes: a TOSA that converts an electrical signal into an optical signal; an ROSA that converts an optical signal into an electrical signal; a receptacle that houses an external optical connector for transmitting or receiving an optical signal through the external optical connector; an internal fiber that optically connects one of the ROSA and the TOSA to the receptacle; a circuit board that includes a circuit that is electrically connected to the TOSA and the ROSA via an FPC; a holding member that is attached to the circuit board and holds the ROSA and the TOSA; and a housing that houses the TOSA, the ROSA, the receptacle, the internal fiber, the circuit board, and the holding member. The holding member includes a plurality of guides that guide the internal fiber.