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A Tunable Slow Light Device with Multiple Channels Based on Plasmon-Induced Transparency |
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| Authors: | Xie Yiyuan Chai Junxiong Ye Yichen Song Tingting Liu Bocheng Zhang Liangyi Zhu Yunchao Liu Yong |
| Institution: | 1.School of Electronics and Information Engineering, Southwest University, Chongqing, 400715, China ;2.Chongqing Key Laboratory of Nonlinear Circuits and Intelligent Information Processing, Chongqing, 400715, China ;3.School of Optoelectronic Information, University of Electronic Science and Technology of Chengdu, Sichuan, 611731, China ; |
| Abstract: | Slow light devices with buffering capability play a critical role in all-optical signal processing. In this paper, multiple slow light phenomena are implemented based on plasmon-induced transparency (PIT) in our device. The device mainly consists of dual tooth cavities coupled with stub resonators, respectively. Temporal coupled-mode theory model illustrates that the triple PIT phenomena can be achieved based on different formation mechanisms. The simulation results calculated by the finite-difference time-domain method reveal that significant slow light response occurs at two wavelength regions. In addition, the parameters of structure have an important influence on PIT response and slow light characteristics. Moreover, the separate manipulation of wavelength, transmission and group index at transparency peak can be achieved in different slow light channels by adjusting the structural parameters. This plasmonic device is of great significance for the design of optical networks on chips. |
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