Polarization Splitter-Rotator Based on Multimode Waveguide Grating
Yannong Luo,
Renyou Ge,
Haozhi Luo,
Meiyan Wu,
Lidan Zhou,
Makunda Aryal,
Wenwei Li,
Jianhui Yuan,
Jian Xu,
Quanxue Lan,
Yongqing Li,
Xinlun Cai
Affiliations
Yannong Luo
Laboratory of Biomedical Photonics & Engineering, Life Science Institute, Guangxi Medical University, Nanning 530021, China
Renyou Ge
State Key Laboratory of Optoelectronic Materials and Technologies, School of Electronics and Information Technology, Sun Yat-Sen University, Guangzhou 510275, China
Haozhi Luo
State Key Laboratory of Optoelectronic Materials and Technologies, School of Electronics and Information Technology, Sun Yat-Sen University, Guangzhou 510275, China
Meiyan Wu
Laboratory of Biomedical Photonics & Engineering, School of Basic Medical Sciences, Guangxi Medical University, Nanning 530021, China
Lidan Zhou
State Key Laboratory of Optoelectronic Materials and Technologies, School of Electronics and Information Technology, Sun Yat-Sen University, Guangzhou 510275, China
Makunda Aryal
Department of Physics, East Carolina University, Greenville, NC 27858-4353, USA
Wenwei Li
Laboratory of Biomedical Photonics & Engineering, Life Science Institute, Guangxi Medical University, Nanning 530021, China
Jianhui Yuan
Laboratory of Biomedical Photonics & Engineering, School of Basic Medical Sciences, Guangxi Medical University, Nanning 530021, China
Jian Xu
School of Economics and Commerce, South China University of Technology, Guangzhou 510640, China
Quanxue Lan
Longgang Center for Disease Control and Prevention, Shenzhen 518172, China
Yongqing Li
Department of Physics, East Carolina University, Greenville, NC 27858-4353, USA
Xinlun Cai
State Key Laboratory of Optoelectronic Materials and Technologies, School of Electronics and Information Technology, Sun Yat-Sen University, Guangzhou 510275, China
We demonstrate a polarization splitter rotator (PSR) based on multimode waveguide grating (MWG) on a silicon-on-insulator (SOI) platform. Bloch mode hybridization in mini-stopband is exploited to achieve high polarization conversion efficiency. The fabricated device yields a high extinction ratio of > 53 dB and > 31 dB, low crosstalk of 0 and TM0 mode, with average insertion loss of 1.2 dB and 1.5 dB in the wavelength regime 1552 nm–1562 nm. Such a device shows great design flexibility and an easy fabrication process, serving as a good candidate in integrated polarization diversity circuits, especially for applications requiring spectra manipulation. Additionally, the polarization conversion approach provides opportunities to develop novel polarization management devices.
