A Tunable Slow Light Device with Multiple Channels Based on Plasmon-Induced Transparency

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,...

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Bibliographic Details
Published in:Plasmonics (Norwell, Mass.) Mass.), 2021-10, Vol.16 (5), p.1809-1816
Main Authors: Xie, Yiyuan, Chai, Junxiong, Ye, Yichen, Song, Tingting, Liu, Bocheng, Zhang, Liangyi, Zhu, Yunchao, Liu, Yong
Format: Article
Language:English
Subjects:
Biochemistry
Biological and Medical Physics
Biophysics
Biotechnology
Channels
Chemistry
Chemistry and Materials Science
Coupled modes
Finite difference time domain method
Light
Nanotechnology
Optical communication
Parameters
Signal processing
Time domain analysis
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Summary: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.
ISSN:1557-1955
1557-1963
DOI:10.1007/s11468-020-01367-5