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Proceedings Paper

Integrated polarizers based on graphene oxide in waveguides and ring resonators
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Paper Abstract

Polarization selective devices, such as polarizers and polarization selective resonant cavities (e.g., gratings and ring resonators), are core components for polarization control in optical systems and find wide applications in polarizationdivision- multiplexing, coherent optical detection, photography, liquid crystal display, and optical sensing. In this paper, we demonstrate integrated waveguide polarizers and polarization-selective micro-ring resonators (MRRs) incorporated with graphene oxide (GO). We achieve highly precise control of the placement, thickness, and length of the GO films coated on integrated photonic devices by using a solution-based, transfer-free, and layer-by-layer GO coating method followed by photolithography and lift-off processes. The latter overcomes the layer transfer fabrication limitations of 2D materials and represent a significant advance towards manufacturing integrated photonic devices incorporated with 2D materials. We measure the performance of the waveguide polarizer for different GO film thicknesses and lengths versus polarization, wavelength, and power, achieving a very high polarization dependent loss (PDL) of ~ 53.8 dB. For GOcoated integrated MRRs, we achieve an 8.3-dB polarization extinction ratio between the TE and TM resonances, with the extracted propagation loss showing good agreement with the waveguide results. Furthermore, we present layer-by-layer characterization of the linear optical properties of 2D layered GO films, including detailed measurements that conclusively determine the material loss anisotropy of the GO films as well as the relative contribution of film loss anisotropy versus polarization-dependent mode overlap, to the device performance. These results offer interesting physical insights and trends of the layered GO films from monolayer to quasi bulk like behavior and confirm the high-performance of integrated polarization selective devices incorporated with GO films.

Paper Details

Date Published: 18 February 2020
PDF: 7 pages
Proc. SPIE 11282, 2D Photonic Materials and Devices III, 112820U (18 February 2020); doi: 10.1117/12.2544584
Show Author Affiliations
Jiayang Wu, Swinburne Univ. of Technology (Australia)
Yunyi Yang, Swinburne Univ. of Technology (Australia)
Yuning Zhang, Swinburne Univ. of Technology (Australia)
Yang Qu, Swinburne Univ. of Technology (Australia)
Xingyuan Xu, Swinburne Univ. of Technology (Australia)
Linnan Jia, Swinburne Univ. of Technology (Australia)
Yao Liang, Swinburne Univ. of Technology (Australia)
Sai T. Chu, City Univ. of Hong Kong (Hong Kong, China)
Brent E. Little, Xi'an Institute of Optics and Precision Mechanics (China)
Roberto Morandotti, INRS (Canada)
ITMO Univ. (Russian Federation)
Univ. of Electronic Science and Technology (China)
Baohua Jia, Swinburne Univ. of Technology (Australia)
David Moss, Swinburne Univ. of Technology (Australia)

Published in SPIE Proceedings Vol. 11282:
2D Photonic Materials and Devices III
Arka Majumdar; Carlos M. Torres Jr.; Hui Deng, Editor(s)

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