Integrated polarizers based on graphene oxide in waveguides and ring resonators

Jiayang Wu, Yunyi Yang, Yuning Zhang, Yang Qu, Xingyuan Xu, Linnan Jia, Yao Liang, Sai T. Chu, Brent E. Little, Roberto Morandotti, Baohua Jia, David Moss

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

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.

Original languageEnglish
Title of host publication2D Photonic Materials and Devices III
EditorsArka Majumdar, Carlos M. Torres, Hui Deng
Place of PublicationBellingham WA USA
PublisherSPIE
Number of pages7
ISBN (Electronic)9781510633285
ISBN (Print)9781510633278
DOIs
Publication statusPublished - 2020
Externally publishedYes
EventSPIE: Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XIII 2020 - San Francisco, United States of America
Duration: 5 Feb 20206 Feb 2020
Conference number: 13th
https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11282.toc (Proceedings)

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
PublisherSPIE.
Volume11282
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceSPIE: Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XIII 2020
Abbreviated titleSPIE OPTO
CountryUnited States of America
CitySan Francisco
Period5/02/206/02/20
Internet address

Keywords

  • 2D materials
  • Graphene oxide
  • Integrated photonics
  • Material anisotropy
  • Polarization control

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