Pluggable Linecard Interfaces for Optical Amplifiers
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Solution Overview
Problem
The existing telecommunications equipment lacks versatility and flexibility in supporting high bit-rate data transmissions through optical fibers, requiring multiple types of linecards for different optical transmission wavelengths and characteristics, leading to increased complexity and costs in manufacturing and maintenance.
Innovation Solution
The implementation of linecards with pluggable optical amplifiers and other devices using industry standard interfaces, such as CFP, CFP2, and XFP, which are controlled by a host processor or FPGA, allowing for standardization and reduction in the number of spare linecards needed, and enabling high-speed data transmission with integrated flash memory for scalable architectures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple types of linecards are used to support different optical transmission wavelengths and characteristics, then the system can support high bit-rate data transmissions, but the device complexity and manufacturing costs increase
Solution Approach 1:
The patent implements a universal linecard architecture with a common host processor and standardized interface that can accommodate multiple types of optical transceiver modules (different wavelengths and characteristics). This allows a single linecard design to perform multiple functions by simply changing the pluggable transceiver module, thereby supporting different optical transmission requirements without increasing the number of linecard types.
Solution Approach 2:
The system is divided into two independent parts: a fixed host processor/linecard platform and interchangeable pluggable optical transceiver modules. This segmentation allows the universal platform to remain consistent while the modular transceivers provide the necessary versatility for different optical characteristics, reducing overall system complexity.
2Adaptability or versatility
If multiple types of linecards are used to support different optical transmission wavelengths and characteristics, then the system can support high bit-rate data transmissions, but manufacturing and maintenance costs increase
Solution Approach 1:
By creating a universal linecard platform that can work with multiple types of pluggable transceivers, the patent enables high-volume manufacturing of a single platform design. This reduces per-unit manufacturing costs through economies of scale and simplifies maintenance by standardizing the host processor and control logic across all linecards.
Solution Approach 2:
The patent uses standardized, replicable transceiver module designs that can be mass-produced and interchangeably deployed across different linecards. This copying approach allows for standardized manufacturing processes and reduces the need for custom-engineered linecards for each optical specification.
3Ease of manufacture
If standard optical pin outs and dimensions are used for pluggable transceivers, then high volume manufacturing is facilitated, but the ability to support complex system designs with different optical characteristics is limited
Solution Approach 1:
The patent separates the standardized mechanical interface (pin outs and dimensions) from the functional optical characteristics. The standardization applies only to the physical connector and basic electrical interface, while the pluggable transceiver modules internally support different optical wavelengths and characteristics through configurable components, thus reconciling manufacturing simplicity with design versatility.
Solution Approach 2:
The standardized pluggable transceiver design incorporates universal mechanical dimensions and pin outs that work across all linecards, while internally supporting multiple optical configurations. This allows the same physical form factor to serve multiple optical functions through software configuration and interchangeable optical components within the transceiver.
Data Source
AI summary
A linecard includes at least one pluggable device, a linecard processor, and a centralized host processor. The linecard also includes an interface that supports a pluggable device. A pluggable device is electrically coupled to the interface and is controlled by the centralized host processor. A flash memory stores data for the pluggable device. The pluggable device can include at least one of an optical amplifier and a ROADM pluggable device.