Inverse Design of Nonvolatile Reconfigurable Mode Generator and Optical Circulator Based on a Novel Concept of a Fully-Digitized Module

• DOI: 10.1109/jlt.2022.3206430
• Publication Date: 2022-09-14T19:34:17Z
• Authors: Hansi Ma; Mingyu Luo; Jie He; Te Du; Zhaojian Zhang; Xinpeng Jiang; Xin He; Liang Fang; Junbo Yang
• Keywords: Circulator

Based on the novel concept of a fully-digitized module, we employ forward-designed-assisted inverse design method to nonvolatile reconfigurable mode generator and an optical circulator, assisted with phase change material. The can selectively output different modes. fundamental transverse electric (TE <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> ) or TE xmlns:xlink="http://www.w3.org/1999/xlink">1</sub> modes be generated when is launched in input port. effective footprint 2.4 μm × 16 exhibits simulated insertion losses less than 1.0 dB crosstalks lower –19.0 for both from 1540 nm 1560 nm. circulator enables light unidirectional propagation. Photons precisely routed each port one adjacent clockwise counterclockwise directions. results indicate that 24 μm, provide 0.8 –16.3 fabrication tolerances caused by expansion contraction etched pattern contour are also investigated. In principle, proposed frameworks extended arbitrary number ports designing generators circulators.