Optical Transceiver Power Control Circuit for Energy Efficiency
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Solution Overview
Problem
Existing optical transceivers face challenges in reducing power consumption while maintaining reception quality, particularly when the limiting amplifier (LA) is not used, leading to decreased output amplitude and noise resistance.
Innovation Solution
An optical transceiver with a power control circuit that selectively supplies power to either the reception unit or the transmission unit based on whether an optical signal is being received or transmitted, allowing for individual power management of the Rx and Tx units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the limiting amplifier (LA) is not used to reduce power consumption, then power consumption is reduced, but output amplitude decreases and noise resistance deteriorates
Solution Approach 1:
The optical transceiver is divided into separate reception unit and transmission unit with independent power supply control. The power supply control unit can selectively power only the reception unit or transmission unit based on operational mode, avoiding simultaneous operation and reducing overall power consumption while maintaining reception quality when needed.
Solution Approach 2:
The power supply control unit dynamically adjusts power distribution between reception and transmission units based on real-time operational requirements. When receiving optical signals, power is supplied to the reception unit; when transmitting electrical signals, power is supplied to the transmission unit, creating a dynamic power management system that optimizes both energy efficiency and performance.
2Adaptability or versatility
If power is supplied to both reception unit and transmission unit simultaneously, then both functions operate, but power consumption increases and temperature rises
Solution Approach 1:
The power supply control unit implements periodic or alternating operation of the reception and transmission units. Instead of continuous simultaneous operation, the system switches between powering the reception unit and transmission unit based on operational mode, reducing average power consumption while maintaining full functional capability when needed.
3Use of energy by moving object
If laser operation current is reduced to save power, then power consumption is reduced, but transmission performance deteriorates
Solution Approach 1:
The power supply control unit applies local quality control by providing different power levels to different units based on their specific operational requirements. The transmission unit receives adequate power when active to maintain transmission performance, while the reception unit is powered only when needed, creating localized optimal power distribution rather than uniform power reduction.
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
This approach enables power savings in optical transceivers while minimizing deterioration in reception quality, reducing crosstalk noise, and suppressing temperature rises during transmission, thereby reducing operation current.
Implementation Method 1
a reception unit configured to convert a reception signal from an optical signal into an electrical signal
Implementation Method 2
a transmission unit configured to convert a transmission signal from an electrical signal into an optical signal
Data Source
AI summary
An optical transceiver includes a reception unit, a transmission unit, and a power control circuit. The reception unit converts a reception signal from an optical signal into an electrical signal. The transmission unit converts a transmission signal from an electrical signal to an optical signal. The power control circuit switches whether to supply the power supplied from the power supply unit to the reception unit or the transmission unit on the basis of whether an optical signal is transmitted or received.