Broadband surface-wave transformation cloak
Guiding surface electromagnetic waves around disorder without disturbing the wave amplitude or phase is in great demand for modern photonic and plasmonic devices, but is fundamentally difficult to realize because light momentum must be conserved in a scattering event. A partial realization has been...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | en_US |
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National Academy of Sciences (U.S.)
2016
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| Online Access: | http://hdl.handle.net/1721.1/100790 https://orcid.org/0000-0002-7184-5831 https://orcid.org/0000-0002-7244-3682 |
| _version_ | 1811092450021736448 |
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| author | Xu, Su Xu, Hongyi Gao, Hanhong Jiang, Yuyu Yu, Faxin Joannopoulos, John D. Chen, Hongsheng Sun, Handong Zhang, Baile Soljacic, Marin |
| author2 | Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies |
| author_facet | Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies Xu, Su Xu, Hongyi Gao, Hanhong Jiang, Yuyu Yu, Faxin Joannopoulos, John D. Chen, Hongsheng Sun, Handong Zhang, Baile Soljacic, Marin |
| author_sort | Xu, Su |
| collection | MIT |
| description | Guiding surface electromagnetic waves around disorder without disturbing the wave amplitude or phase is in great demand for modern photonic and plasmonic devices, but is fundamentally difficult to realize because light momentum must be conserved in a scattering event. A partial realization has been achieved by exploiting topological electromagnetic surface states, but this approach is limited to narrow-band light transmission and subject to phase disturbances in the presence of disorder. Recent advances in transformation optics apply principles of general relativity to curve the space for light, allowing one to match the momentum and phase of light around any disorder as if that disorder were not there. This feature has been exploited in the development of invisibility cloaks. An ideal invisibility cloak, however, would require the phase velocity of light being guided around the cloaked object to exceed the vacuum speed of light—a feat potentially achievable only over an extremely narrow band. In this work, we theoretically and experimentally show that the bottlenecks encountered in previous studies can be overcome. We introduce a class of cloaks capable of remarkable broadband surface electromagnetic waves guidance around ultrasharp corners and bumps with no perceptible changes in amplitude and phase. These cloaks consist of specifically designed nonmagnetic metamaterials and achieve nearly ideal transmission efficiency over a broadband frequency range from 0+ to 6 GHz. This work provides strong support for the application of transformation optics to plasmonic circuits and could pave the way toward high-performance, large-scale integrated photonic circuits. |
| first_indexed | 2024-09-23T15:18:21Z |
| format | Article |
| id | mit-1721.1/100790 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T15:18:21Z |
| publishDate | 2016 |
| publisher | National Academy of Sciences (U.S.) |
| record_format | dspace |
| spelling | mit-1721.1/1007902022-10-02T02:03:26Z Broadband surface-wave transformation cloak Xu, Su Xu, Hongyi Gao, Hanhong Jiang, Yuyu Yu, Faxin Joannopoulos, John D. Chen, Hongsheng Sun, Handong Zhang, Baile Soljacic, Marin Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Research Laboratory of Electronics Gao, Hanhong Joannopoulos, John D. Soljacic, Marin Chen, Hongsheng Guiding surface electromagnetic waves around disorder without disturbing the wave amplitude or phase is in great demand for modern photonic and plasmonic devices, but is fundamentally difficult to realize because light momentum must be conserved in a scattering event. A partial realization has been achieved by exploiting topological electromagnetic surface states, but this approach is limited to narrow-band light transmission and subject to phase disturbances in the presence of disorder. Recent advances in transformation optics apply principles of general relativity to curve the space for light, allowing one to match the momentum and phase of light around any disorder as if that disorder were not there. This feature has been exploited in the development of invisibility cloaks. An ideal invisibility cloak, however, would require the phase velocity of light being guided around the cloaked object to exceed the vacuum speed of light—a feat potentially achievable only over an extremely narrow band. In this work, we theoretically and experimentally show that the bottlenecks encountered in previous studies can be overcome. We introduce a class of cloaks capable of remarkable broadband surface electromagnetic waves guidance around ultrasharp corners and bumps with no perceptible changes in amplitude and phase. These cloaks consist of specifically designed nonmagnetic metamaterials and achieve nearly ideal transmission efficiency over a broadband frequency range from 0+ to 6 GHz. This work provides strong support for the application of transformation optics to plasmonic circuits and could pave the way toward high-performance, large-scale integrated photonic circuits. National Natural Science Foundation (China) (Grant 61322501) National Natural Science Foundation (China) (Grant 61275183) National Top-Notch Young Professionals Program (Grant FANEDDC-200950) Program for New Century Excellent Talents (NCET-12-0489) Fundamental Research Funds for the Central Universities (Grant FRFCU-2014XZZX003-24) Nanyang Assistant Professorship Start-Up Grant Singapore. Ministry of Education (Grant Tier 1 RG27/12) Singapore. Ministry of Education (Grant MOE2011-T3-1-005) Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies (Contract W911NF-13-D-0001) United States. Dept. of Energy (Solid-State Solar-Thermal Energy Conversion Center Grant de-sc0001299) 2016-01-11T01:06:30Z 2016-01-11T01:06:30Z 2015-06 2015-02 Article http://purl.org/eprint/type/JournalArticle 0027-8424 1091-6490 http://hdl.handle.net/1721.1/100790 Xu, Su, Hongyi Xu, Hanhong Gao, Yuyu Jiang, Faxin Yu, John D. Joannopoulos, Marin Soljačić, Hongsheng Chen, Handong Sun, and Baile Zhang. “Broadband Surface-Wave Transformation Cloak.” Proc Natl Acad Sci USA 112, no. 25 (June 8, 2015): 7635–7638. https://orcid.org/0000-0002-7184-5831 https://orcid.org/0000-0002-7244-3682 en_US http://dx.doi.org/10.1073/pnas.1508777112 Proceedings of the National Academy of Sciences Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf National Academy of Sciences (U.S.) National Academy of Sciences (U.S.) |
| spellingShingle | Xu, Su Xu, Hongyi Gao, Hanhong Jiang, Yuyu Yu, Faxin Joannopoulos, John D. Chen, Hongsheng Sun, Handong Zhang, Baile Soljacic, Marin Broadband surface-wave transformation cloak |
| title | Broadband surface-wave transformation cloak |
| title_full | Broadband surface-wave transformation cloak |
| title_fullStr | Broadband surface-wave transformation cloak |
| title_full_unstemmed | Broadband surface-wave transformation cloak |
| title_short | Broadband surface-wave transformation cloak |
| title_sort | broadband surface wave transformation cloak |
| url | http://hdl.handle.net/1721.1/100790 https://orcid.org/0000-0002-7184-5831 https://orcid.org/0000-0002-7244-3682 |
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