Power Over Fiber System With Low-Power Path Verification
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Solution Overview
Problem
Optical power supply systems face challenges in ensuring proper connection of the transmission path for feed light, leading to potential irradiation of high-power feed light and an imbalance between power supply and consumption, necessitating a solution for efficient and balanced power transmission.
Innovation Solution
A power-over-fiber system utilizing semiconductor lasers and photoelectric conversion elements within optical fibers, where semiconductor materials with short wavelengths enhance photoelectric conversion efficiency, and controllers manage power supply to prevent excessive light emission and balance power distribution, ensuring safe and efficient energy transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If high-power feed light is transmitted through optical fiber, then power supply efficiency is improved, but safety hazards increase due to potential irradiation of high-power light
Solution Approach 1:
The system performs preliminary actions by first transmitting low-power feed light to establish connection and verify path integrity before switching to high-power transmission. This preliminary low-power phase ensures the optical path is properly connected and safe, preventing harmful high-power light irradiation while maintaining high power supply efficiency when conditions are safe.
Solution Approach 2:
The system implements feedback mechanisms where the receiving end sends back status information about connection state and received power levels. The transmitting end uses this feedback to dynamically adjust power levels, switching between low-power safe mode and high-power efficient mode based on real-time connection status, thereby resolving the contradiction between power efficiency and safety.
2Power
If power supply amount is increased, then energy transmission capability is improved, but balance between power supply and consumption deteriorates
Solution Approach 1:
The system dynamically adjusts power supply levels based on real-time consumption patterns and connection status. Rather than operating at fixed high or low power, the system continuously adapts power transmission to match actual consumption needs, achieving both high energy transmission capability when needed and optimal balance between supply and consumption through dynamic control.
Solution Approach 2:
The system changes operational parameters (power levels, transmission modes) based on detected conditions. By switching between different power parameters and transmission states, the system achieves high energy transmission capability when conditions permit while maintaining balance with consumption through parameter adjustment based on feedback about actual power needs.
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 system effectively prevents high-power feed light from being released externally and achieves a balanced power supply and consumption by controlling power levels, ensuring safe and efficient energy transfer through optical fibers.
Implementation Method 1
a power sourcing equipment device that outputs feed light by converting electric power into light
Implementation Method 2
a powered device that converts the feed light into electric power
Implementation Method 3
an optical fiber that transmits the feed light
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A power over fiber system (1A, 1, 1B) includes: a first data communication device (100) including a power sourcing equipment device (110); a second data communication device (300) including a photoelectric-conversion-and-optical-communication unit (310, 320, 330, 360) including a powered device (310); and an optical fiber cable (200A, 200, 200B). The first data communication device is capable of controlling low power supply and high power supply of the power sourcing equipment device. Feed electric power by the high power supply exceeds that by the low power supply. The first data communication device enables the high power supply after starting the low power supply to the second data communication device and receiving, therefrom, a signal indicating that the photoelectric-conversion-and-optical-communication unit has started. The photoelectric-conversion-and-optical-communication unit starts and transmits the signal to the first data communication device when receiving the low power supply, and enables extension of a range of a target that receives electric power from the powered device when receiving the high power supply.