Optical Transmission Device Parallel Light Emitting Element Deterioration Detection
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Solution Overview
Problem
Optical transmission devices face challenges in detecting deterioration of light emitting elements in a timely manner, leading to limited replacement time and user inconvenience, as existing systems often detect deterioration just before the element becomes unusable.
Innovation Solution
Incorporating a second light emitting element with a shorter service life in parallel to the primary element, which deteriorates earlier, allowing for detection of degradation and providing sufficient time for replacement before the primary element reaches the end of its service life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single light emitting element is used, then the device structure is simple, but the deterioration detection is delayed until just before failure
Solution Approach 1:
A second light emitting element with a shorter service life is installed in parallel with the first light emitting element. The second element serves as a preliminary indicator that deteriorates earlier than the first element, providing advance warning before the primary element fails. This preliminary action enables timely replacement scheduling without requiring complex monitoring systems.
2Loss of time
If the second light emitting element deteriorates earlier, then replacement time is extended, but the device structure becomes more complex
Solution Approach 1:
The second light emitting element is designed with a deliberately shorter service life and can be considered a sacrificial component. This element deteriorates first and serves its purpose as an early warning indicator, after which it is replaced. The element is configured to be cost-effective and simple, accepting its shorter lifespan as the trade-off for providing extended replacement grace period for the primary element.
3Measurement precision
If parallel connection is used for deterioration detection, then detection accuracy is improved, but the device complexity increases
Solution Approach 1:
The detection unit continuously monitors the operational status of both the first and second light emitting elements. When the second element shows signs of deterioration, this feedback information is used to trigger replacement alerts. The parallel connection enables direct comparison and monitoring, providing accurate deterioration detection through simple feedback mechanisms rather than complex measurement systems.
Data Source
AI summary
An optical transmission device includes a first light emitting element, a second light emitting element, and a detection unit. The first light emitting element is configured to emit light. The second light emitting element is configured to emit light. The second light emitting element is connected in parallel with the first light emitting element and is configured to deteriorate earlier than the first light emitting element. The detection unit is configured to detect whether the second light emitting element is deteriorated.