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Proceedings Paper

Frequency-sweeping single-frequency polarization-maintaining Er-doped fiber laser for FMCW lidar
Author(s): Qian Zhang; Yubin Hou; Heng Jing; Xi Wang; Weihua Song; Pu Wang
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Paper Abstract

Frequency-sweeping lasers have drawn considerable attentions, especially in FMCW LIDAR. The frequency sweeping single-frequency PM fiber laser is respectively realized by piezoelectric (PZT) modulation and pump modulation, which using the same Er-doped distributed Bragg reflection (DBR) fiber cavity. The central wavelength is 1552.49 nm with the extinction ratio of above 20 dB. The frequency sweeping range of PZT modulation is seen to be up to 745 MHz under the modulation repetition rate of 1Hz, and the modulation repetition rate of the pump can be tuned from 1Hz to 20 kHz. However, the frequency sweeping range and tunable range of pump modulation is 635 MHz and from 1Hz to 10 kHz, respectively. Comparing with both methods, the PZT modulation has wider sweeping range and tunable range, however, the mechanical resonance will be occurred. The pump modulation indicates virtually linearly frequency modulation. Future works to achieve more characteristic of two modulation methods are undergoing.

Paper Details

Date Published: 12 March 2020
PDF: 7 pages
Proc. SPIE 11437, 2019 International Conference on Optical Instruments and Technology: Advanced Laser Technology and Applications, 114370R (12 March 2020); doi: 10.1117/12.2550143
Show Author Affiliations
Qian Zhang, Beijing Univ. of Technology (China)
Yubin Hou, Beijing Univ. of Technology (China)
Heng Jing, Beijing Univ. of Technology (China)
Xi Wang, Beijing Univ. of Technology (China)
Weihua Song, Beijing Univ. of Technology (China)
Pu Wang, Beijing Univ. of Technology (China)


Published in SPIE Proceedings Vol. 11437:
2019 International Conference on Optical Instruments and Technology: Advanced Laser Technology and Applications
Zhiyi Wei; Chunqing Gao; Pu Wang; Franz X, Kärtner; Stefan A. Weber, Editor(s)

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