基于布里渊光纤振荡器的可调谐窄带微波光子滤波器研究

游亚军; 许鑫; 王琳毅; 冯刘艳; 刘毅; 耿文平; 贺文君

doi:10.37188/CO.2022-0057

Volume 15 Issue 4

Jul. 2022

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Article Contents

Chinese Optics > 2022 > 15(4): 660-667.

YOU Ya-jun, XU Xin, WANG Lin-yi, FENG Liu-yan, LIU Yi, GENG Wen-ping, HE Wen-jun. Tunable narrowband microwave photonic filter based on brillouin fiber oscillator[J]. Chinese Optics, 2022, 15(4): 660-667. doi: 10.37188/CO.2022-0057

Citation:

YOU Ya-jun, XU Xin, WANG Lin-yi, FENG Liu-yan, LIU Yi, GENG Wen-ping, HE Wen-jun. Tunable narrowband microwave photonic filter based on brillouin fiber oscillator[J]. Chinese Optics, 2022, 15(4): 660-667. doi: 10.37188/CO.2022-0057

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Tunable narrowband microwave photonic filter based on brillouin fiber oscillator

doi: 10.37188/CO.2022-0057

1.
College of Mechatronics Engineering, North University of China, Taiyuan 030051, China
2.
School of Instrument and Electronics, North University of China, Taiyuan 030051, China

Funds: Supported by National Key R&D Program of China (No. 2019YFF0301802); Key Research and Development Projects of Shanxi Province (No. 201903D121124); China Postdoctoral Science Foundation (No. 2020M682113); Shanxi Scholarship Council of China (No. 2020-112); Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi (No. 2020L0268); Fundamental Research Program of Shanxi Province (No. 2021030212558, No. 20210302124390); Shanxi Postgraduate Innovation Project (No. 2021Y616).

More Information

Corresponding author: liuyi28@163.com
Received Date: 29 Mar 2022
Rev Recd Date: 03 May 2022

Available Online: 27 Jun 2022

Abstract

Abstract

In order to make sure a microwave photonic filter both have wide tuning range and high frequency selectivity, a microwave photonic filter with a wide tuning range and narrow filter bandwidth based on a Brillouin oscillator is proposed and verified for the first time. The core of the filter is a Brillouin fiber oscillator with a cavity length of 10 m, and the stimulated Brillouin scattering pump and optical carrier signal are provided by two different tunable lasers. After the Brillouin gain spectrum interacts with the optical modulation sideband, the Brillouin fiber oscillator is used to narrow the spectral linewidth to realize narrowband microwave photonic filtering. By changing the pump wavelength, the filter passband can be tuned stably. The experimental results show that the microwave photonic filter can be stably tuned in the frequency range of 0−20 GHz. The out-of-band rejection ratio is found to be about 20 dB, and its 3-dB bandwidth and maximum Q value are 6.2 kHz and 3.222×10⁶, respectively.To the best of our knowledge, this is the highest value of a high-Q single-passband MPF reported to date. At the same time, the MPF has the advantages of wide tunability, high side mode suppression and a simple structure.
- Stimulated Brillouin Scattering (SBS),
- Microwave Photonic Filter (MPF),
- wide tuning,
- out-of-band rejection ratio,
- narrow bandwidth

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References(25)

References

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