EDFA-enabled resonance beam charging at 1550 nm for improved efficiency, safety, and performance

Nadeem Javed; Ngoc-Luu Nguyen; Syed Farhan Ali Naqvi; Jinyong Ha

doi:10.1117/12.2689234

27 November 2023 EDFA-enabled resonance beam charging at 1550 nm for improved efficiency, safety, and performance

Nadeem Javed, Ngoc-Luu Nguyen, Syed Farhan Ali Naqvi, Jinyong Ha

Proceedings Volume 12760, Advanced Lasers, High-Power Lasers, and Applications XIV; 127601D (2023) https://doi.org/10.1117/12.2689234
Event: SPIE/COS Photonics Asia, 2023, Beijing, China

Conference Poster

Abstract

Utilizing Wireless Optical Power Transfer (WOPT) at extended wavelengths offers a secure means of long-range wireless power transmission. An innovative approach known as Resonance Beam Charging (RBC) has been recently introduced, employing retroreflectors for simplified alignment. This investigation presents a WOPT system incorporating an Erbium-Doped Fiber Amplifier (EDFA) that functions at 1550 nm. We have summarized and compared the reflectivity and transmissivity of a spherical ball lens retroreflector when interacting with the incident beam to optimize power transfer. The system yields an electrical power output of 0.5 Watts, covering a span of 25 meters. The experiment scrutinizes a gallium antimonide photovoltaic cell, achieving a notable 23 percent conversion efficiency from optical to DC-electrical energy. In the final phase, a mathematical assessment is conducted to determine the safe power levels for human skin and eyes, adhering to the Laser safety standards' Maximum Permissible Exposure (MPE) thresholds. The receiver model can potentially enhance the illumination area on the photovoltaic receiver, thereby increasing its efficiency. To validate the performance of the proposed model, a GaSb PV cell is used in the scheme.

Citation Download Citation

Nadeem Javed, Ngoc-Luu Nguyen, Syed Farhan Ali Naqvi, and Jinyong Ha "EDFA-enabled resonance beam charging at 1550 nm for improved efficiency, safety, and performance", Proc. SPIE 12760, Advanced Lasers, High-Power Lasers, and Applications XIV, 127601D (27 November 2023); https://doi.org/10.1117/12.2689234

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