研究目的
Investigating the efficiency of optical power supply systems based on standard, low cost telecom components for ultra-low power devices.
研究成果
The research demonstrated that a PoF system based on telecom, low cost and widely available elements can efficiently power ultra-low power devices. The highest conversion efficiency of 26.2% was observed for an InGaAs photodiode at 1310 nm wavelength, with the total system efficiency reaching up to 13%. The findings suggest that further optimization of photodiode materials and system components could enhance performance.
研究不足
The study is limited by the range of semiconductor materials tested and the specific wavelengths of laser sources used. The efficiency of the whole system does not exceed 13%, indicating potential areas for optimization in both photodiode materials and system design.
1：Experimental Design and Method Selection:
The study involved measuring the efficiency of different semiconductor materials (InGaAs, Si, Ge) as photodiodes in a Power-over-Fiber (PoF) system. The methodology included determining the maximum power point (MPP) of each transducer and calculating the output power as a function of input power and voltage.
2：Sample Selection and Data Sources:
Four different photodiodes (InGaAs FGA01, InGaAs FD80, Si FDS02, Ge FDG03) from Thorlabs were tested. Optical input power was provided by laser sources emitting at 850 nm, 1310 nm, and 1550 nm wavelengths.
3：List of Experimental Equipment and Materials:
Equipment included laser sources (85VCSEL2 from Appointech, LPSC1310FC and LPSC1550FC from Thorlabs), optical power meter (PMD100D with S122C sensor from Thorlabs), and source measure unit (Keysight U2722A).
4：Experimental Procedures and Operational Workflow:
The optical power was measured using direct method with the Keysight at different input powers. The output powers were calculated based on the photodiodes' short-circuit current and output voltage.
5：Data Analysis Methods:
The efficiency of each photodiode was calculated as the ratio of output electrical power to input optical power. The MPP was determined for each transducer.
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