Investigation of polarization-direction-dependent SBS threshold in monolithic high-power PM fiber amplifiers
In this work, we report experimental investigations of polarization-direction-dependent SBS threshold in monolithic high power PM amplifier. The polarization direction in the monolithic amplifier was changed by rotating the output fiber port of the seed laser before splicing to the input fiber of the amplifiers. By increasing the relative rotating angle from 0° to 90°, the polarization-direction of the input laser changed synchronously, and the measured SBS threshold increased monotonically until reaching a maximum value, beyond which it decreased in a nearly symmetrical trend. The polarization extinction ratio of output laser behaved in an opposite trend. The highest SBS threshold was reached with the polarization angle being 45°, delivered a threshold enhancement of 67% compared with that at 0°. The results provided a reference for the improvement of SBS threshold in monolithic high power PM fiber amplifiers.
Authors
- Ya Wen (ORCID: https://orcid.org/0000-0001-8621-8016)
- Rumao Tao (ORCID: https://orcid.org/0000-0002-7458-0074)
- Qiang Shu (ORCID: https://orcid.org/0000-0002-4106-6255)
- Lingli Huang
- Yuefang Yan (ORCID: https://orcid.org/0000-0003-3720-2688)
- jianjun wang
- Hai Zhang (ORCID: https://orcid.org/0000-0002-6624-1224)
- Chun Zhang (ORCID: https://orcid.org/0000-0002-1581-5806)
- Qiuhui Chu (ORCID: https://orcid.org/0000-0002-7960-7133)
- Haokun Li (ORCID: https://orcid.org/0000-0001-6411-9324)
- Yuan Zhu (ORCID: https://orcid.org/0000-0001-6839-8244)
Institutions
- China Academy of Engineering Physics (CN)
- Nanjing University of Science and Technology (CN)
- Nanjing University of Aeronautics and Astronautics (CN)
Publication Details
- Published
- 2024-12-04
- DOI
- https://doi.org/10.1117/12.3034507
- Primary Topic
- Optical Network Technologies
- Type
- article
- Field-Weighted Citation Impact
- 0.00