The University of Ottawa, Canada, the National Research Council Canada (NRC), Canada, and the Fraunhofer Institute for Solar Energy Systems (ISE), Germany, have developed InGaAsP multi-junction photonic power converters with 53.6% efficiency and output voltages above 2 volts. Fraunhofer ISE has stated that the devices convert 1,446-nanometer laser light into electricity, enabling longer-distance transmission in optical fiber and free-space systems. The converters have reduced losses that were common in conventional power-over-fiber setups, which is important for telecommunications requiring simultaneous power and data transfer. Fraunhofer ISE has fabricated the devices, NRC has conducted converter modeling, and the University of Ottawa has carried out modeling and performance measurement. The findings were published open access in Cell Reports Physical Science and have potential applications in telecommunications, industrial, and defense sectors requiring compact, efficient, and reliable remote power delivery solutions.