| Presentation | 2011-10-27 Wavelength Characteristics of a Thin Metal Film Sandwiched Between Dielectric Gratings Yuu WAKABAYASHI, Takato FUKUI, Junji YAMAUCHI, Hisamatsu NAKANO, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A thin metal film sandwiched between dielectric gratings is analyzed using the finite-difference time-domain method. By a proper choice of the fill factor f_H (the ratio of the width of the high index material to the periodicity), the transmission wave can be selected to be either the TE or TM wave, or both. We first consider the case where the fill factor is taken to be unity; the dielectric gratings become homogeneous layers. Both of the TE and TM waves can be transmitted by the Fabry-Perot resonance in the dielectric layers at a wavelength of 1.2 μm. Next, we treat the structure for f_H = 0.5. The excitation of the surface plasmon, which is generated by the diffracted TM wave, transmits the incident wave through the thin metal film. As a result, an extinction ratio of more than 15 dB is obtained over a wavelength range of 1.5 μm to 1.75 μm. Finally, we investigate the structure for f_H = 0.05. Only the TE wave is transmitted at a wavelength of 0.98 μm, at which the resonance occurs in the dielectric gratings. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Finite-difference time-domain method / Surface plasmon / Polarizer / Periodic structure |
| Paper # | OCS2011-62,OPE2011-100,LQE2011-63 |
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| Committee | OCS |
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| Conference Date | 2011/10/20(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Optical Communication Systems (OCS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Wavelength Characteristics of a Thin Metal Film Sandwiched Between Dielectric Gratings |
| Sub Title (in English) | |
| Keyword(1) | Finite-difference time-domain method |
| Keyword(2) | Surface plasmon |
| Keyword(3) | Polarizer |
| Keyword(4) | Periodic structure |
| 1st Author's Name | Yuu WAKABAYASHI |
| 1st Author's Affiliation | Faculty of Science and Engineering, Hosei University() |
| 2nd Author's Name | Takato FUKUI |
| 2nd Author's Affiliation | Faculty of Science and Engineering, Hosei University |
| 3rd Author's Name | Junji YAMAUCHI |
| 3rd Author's Affiliation | Faculty of Science and Engineering, Hosei University |
| 4th Author's Name | Hisamatsu NAKANO |
| 4th Author's Affiliation | Faculty of Science and Engineering, Hosei University |
| Date | 2011-10-27 |
| Paper # | OCS2011-62,OPE2011-100,LQE2011-63 |
| Volume (vol) | vol.111 |
| Number (no) | 265 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |