Fiber-Optic Power Supply Using Charge-Curve Laser Control
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Solution Overview
Problem
Existing fiber optic power supply systems face efficiency drops and degradation due to optical and electro-optical phenomena, and solutions like rotary or thermo-optical filters cause complexity and cost increases.
Innovation Solution
A system with a control circuit that acquires and compares charge curves of a capacitive element and resistance values to adapt laser source power, optimizing efficiency without filters or optical samplings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If rotary or thermo-optical filters are used to modulate optical power, then optical power modulation is achieved, but device complexity and operation speed are worsened
Solution Approach 1:
The patent extracts the modulation function from complex optical filters and mechanical components, replacing them with a simplified control circuit that directly modulates the laser source current. This eliminates the need for rotary or thermo-optical filters, reducing device complexity while maintaining optical power modulation capability through electrical control of the laser diode operating point.
Solution Approach 2:
The patent replaces mechanical rotary filters and thermo-optical filters with an electronic control system that modulates the laser source electrically. This substitution of mechanical and thermal systems with electronic control achieves faster response times and reduces operational complexity while maintaining the ability to modulate optical power for efficiency optimization.
2Productivity
If optical sampling and filters are used for efficiency optimization, then power adaptation is achieved, but device complexity increases
Solution Approach 1:
The patent extracts the efficiency optimization function from complex optical sampling and filtering systems, replacing them with a simplified control circuit that directly monitors and adjusts the laser source current. This eliminates the need for optical samplings and filters, reducing device complexity while maintaining the ability to optimize power supply efficiency through direct electrical control.
Solution Approach 2:
The patent replaces optical sampling and filtering mechanisms with electronic control of the laser source. This substitution achieves faster response times and reduces operational complexity while maintaining the ability to optimize power supply efficiency through electrical modulation of the laser diode operating point.
3Adaptability or versatility
If multiple optical fibers and photoelectric converters are used to distribute optical power, then power distribution is achieved, but device complexity and cost increase
Solution Approach 1:
The patent makes the single optical fiber and laser source multi-functional by enabling the laser source to operate at different power levels through electrical modulation. This allows a single fiber-optic link to provide both power transmission and efficiency optimization capabilities, eliminating the need for multiple fibers and photoelectric converters while maintaining power distribution adaptability.
Solution Approach 2:
The patent changes the operating parameters of the laser source electrically by modulating the drive current to adjust the optical power output. This parameter control enables a single optical fiber link to provide adaptive power distribution at different efficiency levels, replacing the need for multiple physical fibers and converters while maintaining distribution capability.
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 enhances system efficiency by detecting malfunctions and adapting power levels, reducing degradation and complexity, while maintaining power transmission over long distances.
Implementation Method 1
a source of light radiation, for example a high-power laser source, intended to inject into the optical fiber an optical signal for powering the second device
Implementation Method 2
a photoelectric converter, for example, a photodiode, intended to convert into electrical energy the optical power supply signal emitted by the first device
Data Source
AI summary
The present description concerns a system (100) comprising first (101) and second (103) electronic devices coupled by an optical fiber (105), wherein: the first device comprises a laser source (107) intended to illuminate the optical fiber; the second device comprises a photoelectric converter (111) intended to be illuminated from the optical fiber and a capacitive element (115) for storing electrical energy generated by the photoelectric converter; and the first and second electronic devices comprise a control circuit connected to the capacitive element and configured to: acquire a first charge curve of the capacitive element; compare the first charge curve with a second reference charge curve; and in case of a difference between the first and second charge curves, adapt an optical power of the laser source.