Project/Area Number |
17K19077
|
Research Category |
Grant-in-Aid for Challenging Research (Exploratory)
|
Allocation Type | Multi-year Fund |
Research Field |
Applied physics and engineering and related fields
|
Research Institution | Osaka University |
Principal Investigator |
|
Project Period (FY) |
2017-06-30 – 2020-03-31
|
Project Status |
Completed (Fiscal Year 2019)
|
Budget Amount *help |
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2019: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2017: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
|
Keywords | メタマテリアル / プラズモニクス / ハイパボリックメタマテリアル / 光共振器 / 金属・絶縁体転移 / 二酸化バナジウム / 金属・絶縁体相転移 |
Outline of Final Research Achievements |
A uniaxial anisotropic optical medium called a hyperbolic metamaterial (HMM) has a hyperbolic dispersion relation and exhibits special propagation characteristics different from a dielectric. We conducted research on propagation modes of HMM and obtained the following results. 1) Bulk propagating waves in HMMs have been treated by the effective medium approximation, but we found a mode that cannot be explained by the approximation and classified them by the symmetry of the surface plasmon coupling mode. Moreover, the limit of approximation was clarified. 2) It was theoretically proposed that the resonant wavelength of the HMM optical resonator does not depend on the size. This is a revolution in the concept of optical resonators. This makes it possible to realize a new metamaterial using HMM optical resonators as metaatoms.
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Academic Significance and Societal Importance of the Research Achievements |
光通信容量の飛躍的増大により、光信号を処理する電子デバイスの消費電力の大きさが問題となっており、すべて光を用いた集積フォトニックデバイスが必要とされている。光には回折限界があるために、光波長の1/2以下の空間(およそ200nm)に光を閉じ込めて伝送させることはできない。このために光デバイスも回折限界の制限をうけ、微細化ができない問題がある。200nmは現在の電子集積回路の素子が10nm以下であることを考えると非常に大きいといえる。本成果により波長の制約を受けない光導波路や光共振器ができるので、光波長の制約を受けない光デバイスを実現でき、光通信の省電力化に貢献できる。
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Report
(4 results)
Research Products
(12 results)