Efficient and safe infrared wireless power transfer using resonant beam coupling with fiber-based power amplification in optical systems at 1550 nm for improved efficiency, safety, and performance

Nadeem Javed; Ngoc-Luu Nguyen; Jinyong Ha

doi:10.1117/12.3002704

12 March 2024 Efficient and safe infrared wireless power transfer using resonant beam coupling with fiber-based power amplification in optical systems at 1550 nm for improved efficiency, safety, and performance

Nadeem Javed, Ngoc-Luu Nguyen, Jinyong Ha

Author Affiliations +

Proceedings Volume 12867, High-Power Diode Laser Technology XXII; 1286717 (2024) https://doi.org/10.1117/12.3002704
Event: SPIE LASE, 2024, San Francisco, California, United States

Conference Poster

Abstract

This study explores the efficacy of Wireless Optical Power Transfer (WOPT) for secure long-range wireless power transmission, particularly at extended wavelengths. A novel approach, infrared wireless charging, leverages retroreflectors for simplified alignment. The presented WOPT system incorporates an Erbium-Doped Fiber Amplifier (EDFA) operating at 1550 nm. The reflectivity and transmissivity of a spherical ball lens retroreflector are summarized and compared to optimize power transfer. Achieving resonant cavities between the transmitter and receiver requires precise beam alignment, yielding 750 mW at 1 meter and 500 mW over 30 meters at an Amplified Spontaneous Emission (ASE) output power of 1 W. A power loss budget analysis highlights challenges in power transmission, mitigated by adjusting the beam spot size. Examination of incidence angles reveals limitations, with optimal performance up to a 60° angle. These findings emphasize the safety, efficiency, and limitations of the proposed RBC system, offering insights for advancing long-range Wireless Optical Power Transfer (WOPT) systems.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Nadeem Javed, Ngoc-Luu Nguyen, and Jinyong Ha "Efficient and safe infrared wireless power transfer using resonant beam coupling with fiber-based power amplification in optical systems at 1550 nm for improved efficiency, safety, and performance", Proc. SPIE 12867, High-Power Diode Laser Technology XXII, 1286717 (12 March 2024); https://doi.org/10.1117/12.3002704

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