Shih P.-K.Hsiao H.-H.Chang H.-C.HUI-HSIN HSIAO2022-09-192022-09-192018https://www.scopus.com/inward/record.uri?eid=2-s2.0-85048356009&doi=10.1364%2fOE.26.015559&partnerID=40&md5=fe2c80dd1fad4b052850ccc3906c9e7chttps://scholars.lib.ntu.edu.tw/handle/123456789/621107We investigate the Dyakonov-like surface wave (DLSW) at the interface of a dielectric and a metal-dielectric multilayered (MDM) structure when this MDM structure serves as an elliptic medium according to the e ective medium approximation (EMA). Di erent from the conventional Dyakonov surface waves, we find that this kind of DLSW possesses an unexpected leaky property due to an additional hyperbolic-like wave in the MDM structure, resulting in a significant increase of propagation loss compared to the results estimated by a simple e ective model based on the EMA. Moreover, such leaky property is found to be sensitive to the period of the MDM structure. Thus, to diminish this non-negligible leaky loss, one can suppress the amplitude of the leaky component by designing the MDM structure with a smaller period. On the other hand, as the MDM structure sometimes can also support an additional elliptic-like dispersion when it is regarded as a hyperbolic medium, we discuss this condition for completeness. Based on this elliptic-like dispersion, an apparent leaky property is observed in the resultant DLSW. This DLSW propagates with a wider range of propagation direction but su ers from a poor field confinement to the interface it is propagating along. © 2018 Optical Society of America.[SDGs]SDG7Dispersion (waves); Surface waves; Dyakonov surface wave; Metal dielectrics; Model-based OPC; Multi-layered; Multi-layered structure; Propagation direction; Propagation loss; Semi-infinite metals; Structural properties; articlejournal article10.1364/OE.26.0155592-s2.0-85048356009