1.
Younus, Othman; Majlesein, Behnaz; Nacke, Richard; Osahon, Isaac N. O.; Pellegrino, Carmine; Babadi, Sina; Tavakkolnia, Iman; Helmers, Henning; Haas, Harald
Multi-Segment Photonic Power Converters for Energy Harvesting and High-Speed Optical Wireless Communication Miscellaneous
2025.
Abstract | Links | BibTeX | Tags: electronic engineering, FOS: Electrical engineering, information engineering, LRDC, Signal Processing (eess.SP), Systems and Control (eess.SY)
@misc{younus_multi-segment_2025,
title = {Multi-Segment Photonic Power Converters for Energy Harvesting and High-Speed Optical Wireless Communication},
author = {Othman Younus and Behnaz Majlesein and Richard Nacke and Isaac N. O. Osahon and Carmine Pellegrino and Sina Babadi and Iman Tavakkolnia and Henning Helmers and Harald Haas},
url = {https://arxiv.org/abs/2510.06205},
doi = {10.48550/ARXIV.2510.06205},
year = {2025},
date = {2025-01-01},
urldate = {2026-02-03},
publisher = {arXiv},
abstract = {The demand for energy-efficient high-speed wireless communication, coupled with the rapid rise of IoT devices, requires systems that integrate power harvesting with optical data reception to eliminate the need for charging or battery replacements. Recent advances have explored the use of solar cells as optical receivers for high-speed data detection alongside power harvesting. textbackslashacsGaAs-based textbackslashacpPPC provide six times greater electron mobility than silicon- or cadmium telluride-based cells, enabling faster data detection and improved power efficiency. However, their bandwidth is constrained by junction capacitance, which increases with active area, creating a trade-off between power output and data rate. To address this, we propose and test multi-segment textbackslashacsGaAs-based textbackslashAcpPPC that serve as both energy harvesters and data detectors. By segmenting the active area into 2, 4, or 6 subcells, forming circular areas with diameters of 1, 1.5, or 2.08textasciitildemm, we reduce capacitance and boost bandwidth while preserving light collection. Fabricated on a semi-insulating textbackslashacGaAs substrate with etched trenches for electrical isolation, the series-connected subcells optimize absorption and minimize parasitic effects. The textbackslashAcpPPC were used for an eye-safe 1.5textasciitildem optical wireless link, employing textbackslashacOFDM with adaptive bit and power loading. The system achieved a world record data rate of 3.8textasciitildeGbps, which is four times higher than prior works. The system converts 39.7textbackslash% of optical power from a beam of 2.3textasciitildemW, although the segmentation increases the sensitivity of the alignment. These findings provide new solutions for off-grid backhaul for future communication networks, such as 6th generation (6G) cellular.},
keywords = {electronic engineering, FOS: Electrical engineering, information engineering, LRDC, Signal Processing (eess.SP), Systems and Control (eess.SY)},
pubstate = {published},
tppubtype = {misc}
}
The demand for energy-efficient high-speed wireless communication, coupled with the rapid rise of IoT devices, requires systems that integrate power harvesting with optical data reception to eliminate the need for charging or battery replacements. Recent advances have explored the use of solar cells as optical receivers for high-speed data detection alongside power harvesting. textbackslashacsGaAs-based textbackslashacpPPC provide six times greater electron mobility than silicon- or cadmium telluride-based cells, enabling faster data detection and improved power efficiency. However, their bandwidth is constrained by junction capacitance, which increases with active area, creating a trade-off between power output and data rate. To address this, we propose and test multi-segment textbackslashacsGaAs-based textbackslashAcpPPC that serve as both energy harvesters and data detectors. By segmenting the active area into 2, 4, or 6 subcells, forming circular areas with diameters of 1, 1.5, or 2.08textasciitildemm, we reduce capacitance and boost bandwidth while preserving light collection. Fabricated on a semi-insulating textbackslashacGaAs substrate with etched trenches for electrical isolation, the series-connected subcells optimize absorption and minimize parasitic effects. The textbackslashAcpPPC were used for an eye-safe 1.5textasciitildem optical wireless link, employing textbackslashacOFDM with adaptive bit and power loading. The system achieved a world record data rate of 3.8textasciitildeGbps, which is four times higher than prior works. The system converts 39.7textbackslash% of optical power from a beam of 2.3textasciitildemW, although the segmentation increases the sensitivity of the alignment. These findings provide new solutions for off-grid backhaul for future communication networks, such as 6th generation (6G) cellular.