Integrated Laser Package Memory for Parameter Storage
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Solution Overview
Problem
Semiconductor lasers lack integrated storage for operational and user parameters, making it inconvenient for end-users to access and manage tuning settings, as these parameters are typically stored on external media that can be misplaced or lost.
Innovation Solution
A laser package is designed with an integrated memory device that stores manufacturing, operational, and user parameters, allowing serial communication and access to these settings directly within the package, using a semiconductor laser and memory device fabricated together as an integrated circuit, with conductive paths for electrical inputs and memory data paths for parameter storage and retrieval.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If laser parameters are stored on external removable media, then storage capacity is sufficient, but accessibility and reliability deteriorate due to potential misplacement or loss
Solution Approach 1:
The patent combines the laser device with an integrated memory device within the same package, merging previously separate functions (laser operation and parameter storage) into a unified system. This integration ensures parameters are always accessible with the laser without requiring external media, thereby improving both reliability and ease of operation simultaneously.
2Device complexity
If laser parameters are stored externally, then device complexity is reduced, but parameter security and integration deteriorate
Solution Approach 1:
By integrating the memory device within the laser package rather than using separate external storage, the patent maintains relatively simple device complexity while significantly improving parameter retention security. The integrated approach ensures parameters remain with the laser device, preventing loss or misplacement while avoiding the need for complex external storage management systems.
3Ease of manufacture
If parameters are provided on removable disks, then manufacturing cost is low, but user convenience and parameter accessibility worsen
Solution Approach 1:
The integration of memory within the laser package represents a moderate increase in manufacturing complexity but delivers substantial improvements in user convenience. Parameters are permanently associated with the laser device, eliminating the need for users to manually manage removable media while ensuring immediate accessibility upon device operation.
Solution Approach 2:
The integrated memory device automatically provides parameter storage and retrieval functions as part of the laser package itself, eliminating the need for separate external storage management. The system serves itself by maintaining all necessary operational parameters internally, improving user convenience without requiring additional user actions or external components.
Data Source
AI summary
A laser package may include a semiconductor laser and a memory device integrated into the laser package for storing parameters associated with the laser. The parameters may include laser manufacturing, operational and/or user parameters. For example, the semiconductor laser may be tunable and the memory device may store tuning parameter data. One example of the laser package is a tunable transmitter optical sub-assembly (TOSA) package.