TY - GEN
T1 - Propagation of Chiral Whispering Gallery Modes in Microrings Enabled by Tilted Angular Gratings
AU - Chen, Jinghan
AU - Matsubayashi, Hayato
AU - Abazi, Adrian
AU - van Schoonhoven, Frederik
AU - Oki, Yuji
AU - Schuck, Carsten
AU - Yoshioka, Hiroaki
N1 - Publisher Copyright:
© 2025 IEEE.
PY - 2025
Y1 - 2025
N2 - Whispering gallery mode (WGM) microcavities are extensively studied as ultra-low-threshold microlasers. However, their rotational symmetry confines light within the cavity, resulting in isotropic emission, limiting their use in optical communication, where directional control is essential for data manipulation. Previous studies have integrated gratings into microring lasers to emit orbital angular momentum (OAM) beams, with chiral WGMs generating OAM beams in opposite directions. However, these approaches often rely on gain-loss modulation using non-Hermitian physics [1], which poses significant fabrication challenges. Considering research that introduced S-shaped structures to break spatial symmetry in microrings [2] to realize the chiral WGM propagation, this study proposes incorporating spatial asymmetry into grating-integrated microrings for chiral WGM propagation as the groundwork for the chiral propagation of OAM fields.
AB - Whispering gallery mode (WGM) microcavities are extensively studied as ultra-low-threshold microlasers. However, their rotational symmetry confines light within the cavity, resulting in isotropic emission, limiting their use in optical communication, where directional control is essential for data manipulation. Previous studies have integrated gratings into microring lasers to emit orbital angular momentum (OAM) beams, with chiral WGMs generating OAM beams in opposite directions. However, these approaches often rely on gain-loss modulation using non-Hermitian physics [1], which poses significant fabrication challenges. Considering research that introduced S-shaped structures to break spatial symmetry in microrings [2] to realize the chiral WGM propagation, this study proposes incorporating spatial asymmetry into grating-integrated microrings for chiral WGM propagation as the groundwork for the chiral propagation of OAM fields.
UR - https://www.scopus.com/pages/publications/105016254055
UR - https://www.scopus.com/pages/publications/105016254055#tab=citedBy
U2 - 10.1109/CLEO/EUROPE-EQEC65582.2025.11110884
DO - 10.1109/CLEO/EUROPE-EQEC65582.2025.11110884
M3 - Conference contribution
AN - SCOPUS:105033352022
T3 - 2025 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2025
BT - 2025 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2025
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2025 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2025
Y2 - 23 June 2025 through 27 June 2025
ER -