Ultrasharp Fano Resonances Based on the Circular Cavity Optimized by a Metallic Nanodisk
A compact structure is proposed to achieve double ultrasharp Fano profiles, which comprises with a metal-insulator-metal (MIM) bus waveguide coupled with a circular cavity and groove resonator. Simulation results show that this two sharp Fano profiles both originate from the interference between the...
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| Language: | English |
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IEEE
2016-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/7744528/ |
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| author | Yilin Wang Shilei Li Yunyun Zhang Li Yu |
| author_facet | Yilin Wang Shilei Li Yunyun Zhang Li Yu |
| author_sort | Yilin Wang |
| collection | DOAJ |
| description | A compact structure is proposed to achieve double ultrasharp Fano profiles, which comprises with a metal-insulator-metal (MIM) bus waveguide coupled with a circular cavity and groove resonator. Simulation results show that this two sharp Fano profiles both originate from the interference between the circular cavity and the groove resonator. To optimize the Fano profiles, we introduce a metallic nanodisk in the middle of the circular cavity. The peak of the double Fano resonances can be independently tuned within a certain range by changing the radius of the nanodisk. We can utilize these characteristics to design devices with high performance, such as a highly efficient nanosensor with a sensitivity of ∼1450 nm/RIU and a figure of merit (FOM) about ∼3.51 × 10<sup> 4</sup> and a switch with an <sc>on/off</sc> contrast ratio of about 91 dB. Our structures may have promising applications in nanosensors, switches, and slow-light devices. |
| format | Article |
| id | doaj-art-ea475c1269924757a5bdc8c4a991ad1d |
| institution | DOAJ |
| issn | 1943-0655 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-ea475c1269924757a5bdc8c4a991ad1d2025-08-20T03:15:13ZengIEEEIEEE Photonics Journal1943-06552016-01-01861810.1109/JPHOT.2016.26288057744528Ultrasharp Fano Resonances Based on the Circular Cavity Optimized by a Metallic NanodiskYilin Wang0Shilei Li1Yunyun Zhang2Li Yu3State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, ChinaState Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, ChinaState Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, ChinaState Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, ChinaA compact structure is proposed to achieve double ultrasharp Fano profiles, which comprises with a metal-insulator-metal (MIM) bus waveguide coupled with a circular cavity and groove resonator. Simulation results show that this two sharp Fano profiles both originate from the interference between the circular cavity and the groove resonator. To optimize the Fano profiles, we introduce a metallic nanodisk in the middle of the circular cavity. The peak of the double Fano resonances can be independently tuned within a certain range by changing the radius of the nanodisk. We can utilize these characteristics to design devices with high performance, such as a highly efficient nanosensor with a sensitivity of ∼1450 nm/RIU and a figure of merit (FOM) about ∼3.51 × 10<sup> 4</sup> and a switch with an <sc>on/off</sc> contrast ratio of about 91 dB. Our structures may have promising applications in nanosensors, switches, and slow-light devices.https://ieeexplore.ieee.org/document/7744528/Surface plasmonsplasmonic waveguidefano resonancesensor |
| spellingShingle | Yilin Wang Shilei Li Yunyun Zhang Li Yu Ultrasharp Fano Resonances Based on the Circular Cavity Optimized by a Metallic Nanodisk IEEE Photonics Journal Surface plasmons plasmonic waveguide fano resonance sensor |
| title | Ultrasharp Fano Resonances Based on the Circular Cavity Optimized by a Metallic Nanodisk |
| title_full | Ultrasharp Fano Resonances Based on the Circular Cavity Optimized by a Metallic Nanodisk |
| title_fullStr | Ultrasharp Fano Resonances Based on the Circular Cavity Optimized by a Metallic Nanodisk |
| title_full_unstemmed | Ultrasharp Fano Resonances Based on the Circular Cavity Optimized by a Metallic Nanodisk |
| title_short | Ultrasharp Fano Resonances Based on the Circular Cavity Optimized by a Metallic Nanodisk |
| title_sort | ultrasharp fano resonances based on the circular cavity optimized by a metallic nanodisk |
| topic | Surface plasmons plasmonic waveguide fano resonance sensor |
| url | https://ieeexplore.ieee.org/document/7744528/ |
| work_keys_str_mv | AT yilinwang ultrasharpfanoresonancesbasedonthecircularcavityoptimizedbyametallicnanodisk AT shileili ultrasharpfanoresonancesbasedonthecircularcavityoptimizedbyametallicnanodisk AT yunyunzhang ultrasharpfanoresonancesbasedonthecircularcavityoptimizedbyametallicnanodisk AT liyu ultrasharpfanoresonancesbasedonthecircularcavityoptimizedbyametallicnanodisk |