Active Voltage Regulation in Optical Modules
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Solution Overview
Problem
Optical modules, such as transceivers, lack active voltage regulation, which is necessary to optimize performance and extend the operating temperature range, as traditional voltage regulators are not typically used in these devices.
Innovation Solution
An apparatus and method for active voltage regulation in optical modules, where a voltage regulator adjusts supply voltages for laser diode drivers and receiver electronics based on temperature monitoring, using either temperature-sensitive feedback or a microcontroller, to optimize performance and extend the module's lifetime.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If voltage regulators are not used in optical modules, then the device complexity is reduced, but the performance optimization over temperature is lost
Solution Approach 1:
The patent changes the voltage parameter dynamically based on temperature conditions. The voltage regulator adjusts the supply voltage to the laser diode driver according to the monitored temperature, optimizing performance across different temperature ranges while managing the added complexity through targeted parameter adjustment rather than complete system redesign
2Reliability
If voltage regulators are added to optical modules, then performance over temperature is optimized, but the device complexity increases
Solution Approach 1:
The patent implements a feedback mechanism where a temperature sensor monitors the module temperature and feeds this information to the voltage regulator, which then adjusts the supply voltage accordingly. This closed-loop feedback system optimizes performance over temperature while keeping the complexity management through automated control rather than manual intervention
Solution Approach 2:
The voltage regulation system operates autonomously by monitoring its own temperature conditions and automatically adjusting the supply voltage without external intervention. The module self-regulates its performance characteristics based on internal temperature feedback, reducing the need for external control mechanisms
3Reliability
If higher supply voltage is provided to laser diode driver at low temperatures, then the laser voltage compensation is achieved, but the power consumption increases
Solution Approach 1:
The patent employs dynamic voltage adjustment where the supply voltage to the laser diode driver is not fixed but varies with temperature. At low temperatures, higher voltage compensates for increased laser forward voltage requirements, while at elevated temperatures, the voltage is reduced to minimize power consumption. This dynamic adaptation optimizes the trade-off between laser performance and power usage
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
The solution enables the optical module to operate optimally across a range of temperatures by minimizing power consumption and extending the lifetime of integrated circuits, while stabilizing voltage outputs and reducing ripple, thereby enhancing overall module performance.
Implementation Method 1
The ambient temperature of the module may be monitored
Implementation Method 2
the outputs of the voltage regulator may be controlled to provide voltages that may be optimized with respect to temperature
Data Source
AI summary
A method and apparatus for active voltage regulation in optical modules utilize a voltage regulator to change the supply voltage provided to laser diode driver and receiver electronics to optimize module performance over temperature. The ambient temperature of the module is monitored. The outputs of the voltage regulator are controlled to provide voltages that are optimized with respect to temperature for the integrated circuits in the optical module. This control is implemented via a temperature sensitive feedback or a control input from a microcontroller with a temperature monitor input. The supply voltage is optimized to minimize the voltage required to achieve acceptable performance at a given temperature. Minimizing the supply voltage lengthens the lifetime of the integrated circuit and the optical module. The voltage regulator provides higher than standard supply voltages to a laser diode driver to compensate for higher laser voltage at low temperatures.