2022 Fiscal Year Annual Research Report
Research of high speed and high precision LiDAR with real time air refractive index self correction
| Project/Area Number |
22J12145
|
|---|
| Allocation Type | Single-year Grants |
|---|
| Research Institution | The University of Electro-Communications |
|---|
Principal Investigator |
LI RUNMIN 電気通信大学, 情報理工学研究科, 特別研究員(DC2)
|
|---|
| Project Period (FY) |
2022-04-22 – 2024-03-31
|
| Keywords | EO comb / coherent synthesis / low noise / broadband |
|---|
| Outline of Annual Research Achievements |
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.
|
| 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 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.
|
| Strategy for Future Research Activity |
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.
|
