Broadband and Compact TE-Pass Polarizer Based on Hybrid Plasmonic Grating on LNOI Platform
Author(s): Dai, SX (Dai, Shuangxing); Yu, WQ (Yu, Wenqi); Zhao, YR (Zhao, Yiru); Li, MX (Li, Mingxuan); Li, JY (Li, Jinye); Zhang, ZK (Zhang, Zhike); Liu, JG (Liu, Jianguo)
Source: IEEE PHOTONICS JOURNAL Volume: 13 Issue: 1 DOI: 10.1109/JPHOT.2020.3041286 Published: FEB 2021
Abstract: A broadband and compact TE-pass/TM-stop polarizer is presented based on hybrid plasmonic grating (HPG) on an x-cut Lithium-Niobate-on-isolator (LNOI) platform. By comprehensively analyzing the effects of metal width on mode effective index, mode similarity, and mode conversion, we demonstrate the structure with a narrow metal layer. The simulation results indicate that the polarizer with a compact length of 9 mu m achieves an extinction ratio over 20 dB within the wavelength range from 1470 nm to 1700 nm. The insertion loss is below 2.3 dB in C-band. Furthermore, the polarizer exhibits large fabrication tolerance to current fabrication technology.
Accession Number: WOS:000636145100008
Author Web of Science ResearcherID ORCID Number
zhang, zhi ke 0000-0002-8726-3174
Li, Mingxuan 0000-0002-4610-7554