Motaei Farzaneh, Bahrami Ali
Optoelectronics and Nanophotonics Research Laboratory (ONRL), Faculty of Electrical Engineering, Sahand University of Technology, Tabriz, Iran.
Sci Rep. 2021 Sep 28;11(1):19198. doi: 10.1038/s41598-021-98854-4.
In this study, a novel elastic phononic crystal fiber has been presented for the first time. This proposed structure can expand the sonic communications field, significantly. In order to realize the elastic fiber performance, solid-solid phononic crystal has been utilized. The phononic crystal structure operates as cladding in surroundings and central region acts as core of fiber by elimination of rods. Incident acoustic waves with transverse polarization have confined and propagated in the core region of the phononic crystal fiber. Two types of phononic crystal fiber with different core radii have been investigated. Incident elastic waves can confine in the core region with confinement factor higher than 500. Also, longitudinal losses have been achieved low and equal to 0.35 dB/km.
在本研究中，首次提出了一种新型弹性声子晶体光纤。这种提出的结构能够显著扩展声波通信领域。为了实现弹性光纤性能，采用了固-固声子晶体。声子晶体结构在周围环境中起包层作用，通过去除棒状结构，中心区域作为光纤的纤芯。具有横向极化的入射声波被限制在声子晶体光纤的纤芯区域并传播。研究了两种具有不同纤芯半径的声子晶体光纤。入射弹性波能够被限制在纤芯区域，限制因子高于500。此外，纵向损耗较低，等于0.35 dB/km。
