Solid and hollow whispering gallery mode resonators for all optical switchGabriele Frigenti, Tatyana V. Murzina, Daniele Farnesi, Stefano Pelli, Gualtiero Nunzi Conti and Silvia SoriaEPJ Web Conf., 309 (2024) 08010DOI: https://doi.org/10.1051/epjconf/202430908010