Wideband circular polarization converter based on graphene metasurface at terahertz frequencies

Chongyun Wang; Ming Chen; Houquan Liu; Chuanxin Teng; Hongchang Deng; Libo Yuan

doi:10.1117/1.OE.58.4.043106

25 April 2019 Wideband circular polarization converter based on graphene metasurface at terahertz frequencies

Chongyun Wang, Ming Chen, Houquan Liu, Chuanxin Teng, Hongchang Deng, Libo Yuan

Author Affiliations +

Optical Engineering, Vol. 58, Issue 4, 043106 (April 2019). https://doi.org/10.1117/1.OE.58.4.043106

Abstract

Linear-to-circular polarization converters are widely used in optical and microwave systems, but the polarization devices of traditional materials are untunable, and devices made of graphene materials can overcome this disadvantage. A circular polarization converter based on graphene metasurface is designed, whose properties are tunable over a broad range at terahertz frequencies. With appropriate structural parameters, simulations show that the axial ratio of reflected electromagnetic wave of the proposed device is lower than 3 dB in the frequency band of 2.25 to 2.475 THz, which means the linearly incident polarization can be converted to the circular polarization wave. The proposed design can also work when the electromagnetic wave is oblique incidence up to 40 deg with a high polarization conversion ratio. Moreover, the operating frequency band can be arbitrarily adjusted by applying a bias voltage.

Citation Download Citation

Chongyun Wang, Ming Chen, Houquan Liu, Chuanxin Teng, Hongchang Deng, and Libo Yuan "Wideband circular polarization converter based on graphene metasurface at terahertz frequencies," Optical Engineering 58(4), 043106 (25 April 2019). https://doi.org/10.1117/1.OE.58.4.043106

Received: 11 September 2018; Accepted: 9 April 2019; Published: 25 April 2019

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available