Single- and dual-plasmonic induced absorption in a subwavelength end-coupled composite-square cavity

Wen Kunhua; Hu Yihua; Chen Li; Zhou Jinyun; He Miao; Lei Liang; Wu Yanjie; Li Jianfeng

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Single- and dual-plasmonic induced absorption in a subwavelength end-coupled composite-square cavity

机译：亚波长端耦合复合 - 方腔中的单级和双等离子体诱导的吸收

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A plasmonic end-coupled composite-square cavity (CSC) structure is proposed by adding two horizontal and normal slot cavities into a perfect square cavity (PSC) structure that is regarded as a Fabry-Perot resonator. Owing to the interference effect between the bright and dark modes, which is supported by the PSC and the slot cavities, respectively, a single plasmonic induced absorption (PIA) response with large abnormal dispersion is achieved at the former transmission peak in the CSC structure. The induced absorption window can be tuned to the wavelength of the first or second mode by using the horizontal and normal slot cavities. By changing the refractive index of the insulator inside the horizontal slot cavity, dual PIA responses are also obtained in the CSC structure. The performances of the proposed CSC structure are analyzed and investigated by using the finite-difference time-domain method. (C) 2017 Optical Society of America

机译：通过将两个水平和正常的槽腔添加到被认为是法布里 - 珀罗谐振器的完美方腔（PSC）结构中，提出了一种等离子体端耦合的复合层腔（CSC）结构。由于PSC和槽腔支撑的明亮和暗模式之间的干扰效应，在CSC结构中的前传动峰值处实现了具有大异常分散的单个等离子体诱导的吸收（PIA）响应。通过使用水平和正常的槽腔可以调谐到第一或第二模式的波长的感应吸收窗口。通过改变水平槽腔内的绝缘体的折射率，在CSC结构中也获得了双PIA响应。通过使用有限差分时间域法分析和研究所提出的CSC结构的性能。（c）2017年光学学会

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来源
《Applied optics》 |2017年第30期|共6页
作者
Wen Kunhua; Hu Yihua; Chen Li; Zhou Jinyun; He Miao; Lei Liang; Wu Yanjie; Li Jianfeng;
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作者单位

Guangdong Univ Technol Sch Phys &

Optoelect Engn Guangzhou 510006 Guangdong Peoples R China;

Guangdong Univ Technol Sch Phys &

Optoelect Engn Guangzhou 510006 Guangdong Peoples R China;

Guangdong Univ Technol Sch Phys &

Optoelect Engn Guangzhou 510006 Guangdong Peoples R China;

Guangdong Univ Technol Sch Phys &

Optoelect Engn Guangzhou 510006 Guangdong Peoples R China;

Guangdong Univ Technol Sch Phys &

Optoelect Engn Guangzhou 510006 Guangdong Peoples R China;

Guangdong Univ Technol Sch Phys &

Optoelect Engn Guangzhou 510006 Guangdong Peoples R China;

Guangdong Univ Technol Sch Phys &

Optoelect Engn Guangzhou 510006 Guangdong Peoples R China;

Guangdong Univ Technol Sch Phys &

Optoelect Engn Guangzhou 510006 Guangdong Peoples R China;

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Single- and dual-plasmonic induced absorption in a subwavelength end-coupled composite-square cavity

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