Terahertz polarization rotator based on silicon asymmetrical structure

Wentao Deng; Liao Chen; Yu Yu; Xiaojun Wu; Xinliang Zhang

doi:10.1117/12.2602776

9 October 2021 Terahertz polarization rotator based on silicon asymmetrical structure

Wentao Deng, Liao Chen, Yu Yu, Xiaojun Wu, Xinliang Zhang

Proceedings Volume 11894, Optoelectronic Devices and Integration X; 118941C (2021) https://doi.org/10.1117/12.2602776
Event: SPIE/COS Photonics Asia, 2021, Nantong, JS, China

Conference Poster

Abstract

Terahertz polarization control has a wide range of applications in imaging, communication, biology, and analytical chemistry. Polarization rotator is of great significance as one of the main units of a polarization controller. In this paper, we propose and simulate a terahertz polarization rotator based on silicon asymmetrical structure, whose polarization extinction ratio reaches up to 35 dB and 26 dB for transverse electronic and transverse magnetic modes, respectively. Its 15-dB bandwidth is 40 GHz for a conversion length of 4.4 mm. The results show that the integrated scheme can achieve the function of polarization rotation with high conversion efficiency. We believe it will play an important role in terahertz polarization management.

Conference Presentation

Citation Download Citation

Wentao Deng, Liao Chen, Yu Yu, Xiaojun Wu, and Xinliang Zhang "Terahertz polarization rotator based on silicon asymmetrical structure", Proc. SPIE 11894, Optoelectronic Devices and Integration X, 118941C (9 October 2021); https://doi.org/10.1117/12.2602776

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