| Presentation | 2012-10-26 Electro-Optic Modulators Based on X-Cut LiNbO_3 Crystals Using Patch-Antennas Embedded with a Narrow-Gap Yusuf Nur WIJAYANTO, Hiroshi MURATA, Tetsuya KAWANISHI, Yasuyuki OKAMURA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Guided-wave electro-optic (EO) modulators based on χ-cut LiNbO_3 crystals using patch-antennas embedded with a narrow-gap (～5μm width) were proposed for high-speed radio-over-fiber systems. A wireless microwave signal can be received by the patch-antennas and directly converted to a lightwave signal through optical modulation by induced microwave electric fields across the gap. By using an χ-cut LiNbO_3, which has lower dielectric constants than LiTaO_3, as the substrate, a larger size of the patch-antenna and stronger electric field across narrow-gap can be obtained. The measured sensitivity of the proposed devices becomes twice compared to the LiTaO_3-based optical modulators at the microwave operational frequency of 26GHz. Techniques for improving effective sensitivity are also discussed for microwave/millimeter-wave frequency operations. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Optical modulator / electro-optic effect / patch-antenna / microwave signal / radio-over-fiber |
| Paper # | OCS2012-62,OPE2012-113,LQE2012-79 |
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| Conference Information | |
| Committee | OPE |
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| Conference Date | 2012/10/18(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Optoelectronics (OPE) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Electro-Optic Modulators Based on X-Cut LiNbO_3 Crystals Using Patch-Antennas Embedded with a Narrow-Gap |
| Sub Title (in English) | |
| Keyword(1) | Optical modulator |
| Keyword(2) | electro-optic effect |
| Keyword(3) | patch-antenna |
| Keyword(4) | microwave signal |
| Keyword(5) | radio-over-fiber |
| 1st Author's Name | Yusuf Nur WIJAYANTO |
| 1st Author's Affiliation | Graduate School of Engineering Science, Osaka University() |
| 2nd Author's Name | Hiroshi MURATA |
| 2nd Author's Affiliation | Graduate School of Engineering Science, Osaka University |
| 3rd Author's Name | Tetsuya KAWANISHI |
| 3rd Author's Affiliation | National Institute of Information and Communications Technology |
| 4th Author's Name | Yasuyuki OKAMURA |
| 4th Author's Affiliation | Graduate School of Engineering Science, Osaka University |
| Date | 2012-10-26 |
| Paper # | OCS2012-62,OPE2012-113,LQE2012-79 |
| Volume (vol) | vol.112 |
| Number (no) | 259 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |