| Project/Area Number |
23K22760
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| Project/Area Number (Other) |
22H01490 (2022-2023)
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Multi-year Fund (2024)
Single-year Grants (2022-2023) |
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| Section | 一般 |
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| Review Section |
Basic Section 21020:Communication and network engineering-related
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| Research Institution | Kyushu University |
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Principal Investigator |
呂 国偉 九州大学, 先導物質化学研究所, 准教授 (30599709)
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| Co-Investigator(Kenkyū-buntansha) |
品田 聡 国立研究開発法人情報通信研究機構, ネットワーク研究所フォトニックICT研究センター, 研究マネージャー (00392720)
千葉 明人 群馬大学, 大学院理工学府, 准教授 (30435789)
坂本 高秀 東京都立大学, システムデザイン研究科, 准教授 (70392727)
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| Project Period (FY) |
2024-04-01 – 2026-03-31
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| Project Status |
Granted (Fiscal Year 2024)
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| Budget Amount *help |
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2025: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2024: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
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| Keywords | Four-wave Mixing / Coherent LiDAR / Optical Comb / Machine Learning / Parallel LiDAR / Optical comb source / Silicon photonics / parallel LiDAR / Four-wave mixing |
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| Outline of Research at the Start |
We employ our developed pump-phase-noise-free optical multicast technique to generate multiple low phase-noise light sources optimized for long-range and parallel coherent LiDAR applications. Furthermore, through strategic pump configuration within a multicast setup via inverse system design, we achieve intelligent scalability, facilitating tailored scaling of the light sources.
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| Outline of Annual Research Achievements |
This year, we published six refereed journal papers and five refereed conference papers, focusing on chirp-based modulation techniques and integrated photonic devices.In the area of chirp-based modulation, we studied a multi-carrier chirp format with index modulation to enhance receiver sensitivity and increase achievable bit rates. This approach is particularly promising for integration with chirp-based sensing technologies such as FMCW ranging and aligns with our ongoing efforts to develop FMCW-based sensing systems. It also holds potential for the advancement of integrated sensing and communication systems. In parallel, we demonstrated photonic integrated devices capable of ultra-fast electro-optic modulation. Notably, one of our works was published in Communications Materials and was recognized as one of the top 25 most downloaded papers in 2024, underscoring the impact and significance of our research in this field.
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| Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
The research is progressing smoothly as planned. We have investigated the application of chirp modulation in communication systems, and in parallel, demonstrated several photonic chips enabling ultra-fast electro-optic modulation, which are key components for both optical sensing and communication. These complementary efforts have ensured steady and effective advancement of the project.
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| Strategy for Future Research Activity |
In this fiscal year, we plan to focus on the demonstration of scalable optical comb generation for FMCW LiDAR. Depending on the progress, we will explore implementations based on either silicon nitride or AlGaAs-on-insulator platforms. Our goal is to realize a highly scalable and stable optical comb source suitable for integrated sensing applications.
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