A Linear Frequency-Swept Laser With Negative Voltage Tuning for Long-Range FMCW LiDAR Applications
We present a linear frequency-swept laser for longrange frequency-modulated continuous-wave (FMCW) light detection and ranging (LiDAR), utilizing negative voltage tuning with a high output power distributed-Bragg-reflector (DBR) laser integrated with a spot size converter (SSC) and semiconductor optical amplifier (SOA). Compared to positive voltage tuning, negative voltage tuning offers key advantages including a linear tuning response and reduced spectral broadening. To enhance the coupling efficiency to the lensed fiber, an SSC with a buried waveguide structure is introduced at the output port. The laser features a free spectral range of 0.3 nm and a Lorentzian linewidth of 140 kHz. Negative voltage tuning in the phase region enables linear frequency sweeping, while phase noise compensation allows for long-range measurements.
Authors
- Yuzhe Xue (ORCID: https://orcid.org/0009-0007-2252-1762)
- Nanguo Li
- Jiajun Lou (ORCID: https://orcid.org/0009-0007-0091-6384)
- Quanan Chen (ORCID: https://orcid.org/0000-0002-6878-7167)
- Kuankuan Wang (ORCID: https://orcid.org/0000-0002-3166-012X)
- Qiaoyin Lu (ORCID: https://orcid.org/0000-0001-6671-8929)
- Weihua Guo (ORCID: https://orcid.org/0000-0001-5634-1048)
- Xiaopeng Li (ORCID: https://orcid.org/0000-0002-5264-3775)
- Can Liu (ORCID: https://orcid.org/0000-0001-5451-4144)
- Wenrui Zhang (ORCID: https://orcid.org/0000-0003-1004-4499)
- Gong Zhang (ORCID: https://orcid.org/0000-0002-4166-3164)
- Wei Hong
- Chun Jiang (ORCID: https://orcid.org/0000-0003-2445-4237)
Institutions
- China Academy of Space Technology (CN)
- Wuhan National Laboratory for Optoelectronics (CN)
- Huazhong University of Science and Technology (CN)
Publication Details
- Journal
- Journal of Lightwave Technology
- Published
- 2025-06-13
- DOI
- https://doi.org/10.1109/jlt.2025.3579627
- Citations
- 1
- Primary Topic
- Advanced Optical Sensing Technologies
- Type
- article
- Field-Weighted Citation Impact
- 1.19
Funders
- National Natural Science Foundation of China