| 研究課題/領域番号 |
22J12145
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| 配分区分 | 補助金 |
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| 研究機関 | 電気通信大学 |
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研究代表者 |
LI RUNMIN 電気通信大学, 情報理工学研究科, 特別研究員(DC2)
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| 研究期間 (年度) |
2022-04-22 – 2024-03-31
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| キーワード | EO comb / coherent synthesis / low noise / broadband |
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| 研究実績の概要 |
A coherently synthesized two-color EO comb is constructed within this year. Two CW lasers with distinct center wavelengths are modulated by EO modulators, resulting in two EO combs. The coherent synthesis between the two EO combs leads to the generation of coherently synthesized two-color EO comb. This coherently synthesized two-color EO comb shows the advantageous of broadband spectrum and low phase noise.
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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 research goes smoothly in the past year. The research result, which is the demonstration of coherently synthesized two-color EO comb, is the important basic of the following research. In the next year, a LIDAR system will construct based on the coherently synthesized two-color EO comb. This LIDAR system will show the advantageous of high update rate and high precision.
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| 今後の研究の推進方策 |
A LIDAR system with high update rate and high precision will be constructed in this year. The coherently synthesized two-color EO comb is utilized as the optical source of the LIDAR system. The performance of the LIDAR system will be systematically studied, including the long-term and short-term stability, the linearity and measurement errors. Some technologies and improvements will be implemented to improve the system performance. The non-ambiguity range of the system will be extended by combining several measurement methods. Finally, absolute distance measurement with nanometer precision in extended non-ambiguity range will be realized in this system.
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