Phase-locked dual-frequency microwave signal generation in an optoelectronic oscillator based on frequency mixing mutual injection
An approach to generating stable phase-locked dual-frequency microwave signals is proposed and demonstrated based on a dual-passband optoelectronic oscillator (OEO). Mode gain competition is broken by employing frequency mixing mutual injection effect to realize phase locking between the two oscilla...
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Veröffentlicht in: | Optics express 2024-04, Vol.32 (8), p.13825-13835 |
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container_title | Optics express |
container_volume | 32 |
creator | Fu, Zhenwei Zeng, Zhen Tian, Huan Lyu, Weiqiang Zhang, Lingjie Zhang, Yaowen Zhang, Zhiyao Zhang, Shangjian Zhang, Yali Li, Heping Liu, Yong |
description | An approach to generating stable phase-locked dual-frequency microwave signals is proposed and demonstrated based on a dual-passband optoelectronic oscillator (OEO). Mode gain competition is broken by employing frequency mixing mutual injection effect to realize phase locking between the two oscillation signals, which is achieved by applying a single-tone signal to a microwave mixer in the OEO cavity. In addition, a dual-loop configuration with balanced detection is utilized to ensure a high side mode suppression ratio (SMSR) and ultra-low phase noise, which also enhances the stability of the generated signal. In the experiment, a phase-locked dual-frequency microwave signal at 9.9982 GHz and 10.1155 GHz is generated by using the proposed OEO scheme. The SMSR and the phase noise are 75 dB and -141 dBc/Hz@10 kHz, respectively. Additionally, the Allan deviation of the generated signal is in the order of 10
@1 s. These parameters are superior to those based on the same OEO but with a single-loop configuration, which are also compared in detail. |
doi_str_mv | 10.1364/OE.520158 |
format | Article |
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@1 s. These parameters are superior to those based on the same OEO but with a single-loop configuration, which are also compared in detail.</abstract><cop>United States</cop><pmid>38859342</pmid><doi>10.1364/OE.520158</doi><tpages>11</tpages><orcidid>https://orcid.org/0000-0002-9521-5607</orcidid><oa>free_for_read</oa></addata></record> |
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title | Phase-locked dual-frequency microwave signal generation in an optoelectronic oscillator based on frequency mixing mutual injection |
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