Optical Module Power Adjustment for Variable Link Distance
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Solution Overview
Problem
Traditional optical modules in modern communication systems operate at a fixed power level, unable to adjust output optical power according to varying communication distances, leading to inefficient power consumption and system performance issues.
Innovation Solution
An optical module and method that dynamically adjusts output optical power by detecting input and output optical power, calculating bias and modulation currents, and using a controlling and calculating unit to adjust power levels based on receiving sensitivity and power differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If traditional optical modules operate at fixed power level, then device complexity is reduced, but power consumption efficiency deteriorates
Solution Approach 1:
The patent implements dynamic optical power adjustment by introducing a controlling unit that calculates bias current and modulation current based on detected optical power levels. The optical transmitting device dynamically adjusts its output power according to communication distance requirements, transitioning from fixed power operation to adaptive power control, thereby resolving the contradiction between power efficiency and device complexity.
Solution Approach 2:
The patent establishes a feedback mechanism where the optical receiving device detects input optical power and feeds this information back to the controlling unit. The controlling unit uses this feedback to calculate appropriate bias and modulation currents, creating a closed-loop control system that optimizes power consumption based on actual reception conditions.
2Productivity
If optical module adjusts output power dynamically, then power consumption efficiency improves, but device complexity increases
Solution Approach 1:
The controlling unit performs multiple functions including detecting optical power levels, calculating bias current, calculating modulation current, and controlling the optical transmitting device. By integrating these multiple functions into a single control unit, the patent reduces the overall system complexity while achieving dynamic power adjustment for improved system performance.
Solution Approach 2:
The system automatically detects optical power levels and adjusts transmission power without external intervention. The controlling unit autonomously calculates appropriate current values and adjusts the optical transmitting device based on feedback from the optical receiving device, enabling self-service power optimization that improves system performance.
3Adaptability or versatility
If fixed power level is used, then ease of operation is maintained, but adaptability to distance variations deteriorates
Solution Approach 1:
The system automatically adapts to different communication distances by having the optical receiving device detect input optical power and the controlling unit calculate appropriate bias and modulation currents. This self-service adaptation eliminates the need for manual intervention while maintaining ease of operation, allowing the system to automatically optimize for varying distance conditions.
Data Source
AI summary
A method of adjusting an optical power includes: detecting an input optical power by an optical receiving device and detecting an output optical power by an optical transmitting device; determining whether the output optical power must be adjusted; calculating a bias current and a modulation current; and adjusting the output optical power according to the calculated bias current and the modulation current.