| 研究課題/領域番号 |
18K04152
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| 研究機関 | 東海大学 |
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研究代表者 |
呂 国偉 東海大学, 創造科学技術研究機構, 准教授 (30599709)
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| 研究分担者 |
千葉 明人 群馬大学, 大学院理工学府, 助教 (30435789)
坂本 高秀 国立研究開発法人情報通信研究機構, ネットワークシステム研究所ネットワーク基盤研究室, 主任研究員 (70392727)
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| 研究期間 (年度) |
2018-04-01 – 2022-03-31
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| キーワード | Four-wave Mixing / Subcarrier Multiplexing / Signal Processing / Single-Side Band |
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| 研究実績の概要 |
In the second year of this project, we have successfully validated our proposed sub-carrier processing scheme by experimentally synthesizing a Nyquist single-side band (SSB) signal with high-order modulation format through optical nonlinearity-based subcarrier processing techniques, i.e. coherently-pumped four-wave mixing. In the experimental validation, two independent binary-modulated subcarriers in the input dual-SSB signal are coherently merged, finally generating a new SSB Nyquist signal with quadrature phase-shift keying (QPSK). All of the information carried in the input two subcarriers have been well conserved and merged, eventually forming a new 2-dimension modulation format (QPSK) in a complex plane. Meanwhile, the multicast of the SSB carriers is achieved.
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| 現在までの達成度 (区分) |
現在までの達成度 (区分)
2: おおむね順調に進展している
理由
The project is progressing well. The validation of our proposed subcarrier processing scheme has been successfully performed by experimental demonstration. A 12.5 Gbps SSB Nyquist 16QAM was experimentally synthesized from a 2×6.25 Gbps twin-SSB Nyquist QPSK with an error-free operation.
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| 今後の研究の推進方策 |
In the next year, we are going to explore the possibility to further extend our proposed scheme to other applications, such as distance measurement or ranging.
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| 次年度使用額が生じた理由 |
Due to the COVID-19 pandemic, the scheduled conference trip in US has to be cancelled.
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