A simple microwave photonic phase shifter based on waveplate rotation

Wu Zhang; Qinggui Tan; Shufeng Sun; Bin Shao

doi:10.1117/12.3007412

21 December 2023 A simple microwave photonic phase shifter based on waveplate rotation

Wu Zhang, Qinggui Tan, Shufeng Sun, Bin Shao

Proceedings Volume 12966, AOPC 2023: AI in Optics and Photonics ; 129661J (2023) https://doi.org/10.1117/12.3007412
Event: Applied Optics and Photonics China 2023 (AOPC2023), 2023, Beijing, China

Abstract

The phase shifter is the key component for phased array systems. However, the previously proposed microwave photonic phase shifter always has a complex structure and is difficult to operate. In this paper, a simple microwave photonic phase shifter based on waveplate rotation is proposed. It is composed of a cascaded quarter-wave plate (QWP) and a half-wave plate (HWP), the QWP is used to control the amplitude and HWP is adopted to control the phase of the microwave signal. By fixing the rotating angle of QWP, the phase of the microwave signal will be linearly changed with the rotation angle of the HWP. Compared with other schemes, the proposed method is easy to use. A proof-of-concept experiment is performed. Experimental result shows that a wide phase shift range of 542.38° can be realized and the power fluctuation can be within 0.47 dB. For a 360° phase shift, the power fluctuation can be maintained within 0.33 dB.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Wu Zhang, Qinggui Tan, Shufeng Sun, and Bin Shao "A simple microwave photonic phase shifter based on waveplate rotation", Proc. SPIE 12966, AOPC 2023: AI in Optics and Photonics , 129661J (21 December 2023); https://doi.org/10.1117/12.3007412

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