{"title":"基于傅里叶域锁模光电振荡器的LFM-Costas波形生成","authors":"Xiangrui Tian, Lingjie Zhang, Huan Tian, Zhiyao Zhang, Heping Li, Yong Liu","doi":"10.1117/12.2601394","DOIUrl":null,"url":null,"abstract":"A linear frequency modulation (LFM)-Costas waveform generation scheme is proposed and experimentally demonstrated based on a Fourier domain mode locking (FDML) optoelectronic oscillator (OEO). The FDML OEO is established based on stimulated Brillouin scattering (SBS) effect, where the Costas-coded probe light is realized by employing an open-loop voltage controlled oscillator (VCO) via electro-optic frequency shift. In the experiment, an LFM-Costas waveform with a 12-bit Costas sequence, a chirp rate of 39.234 MHz/μs and a period of 20.390 μs is generated in the frequency range of 8.020 GHz to 8.820 GHz. The generated LFM-Costas waveform has good pulse-to-pulse coherence according to the correlation results, and has been used to detect two targets with a distance difference of 0.30 m and 0.20 m.","PeriodicalId":328885,"journal":{"name":"Real-time Photonic Measurements, Data Management, and Processing VI","volume":"47 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2021-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"LFM-Costas waveform generation based on a Fourier domain mode locking optoelectronic oscillator\",\"authors\":\"Xiangrui Tian, Lingjie Zhang, Huan Tian, Zhiyao Zhang, Heping Li, Yong Liu\",\"doi\":\"10.1117/12.2601394\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A linear frequency modulation (LFM)-Costas waveform generation scheme is proposed and experimentally demonstrated based on a Fourier domain mode locking (FDML) optoelectronic oscillator (OEO). The FDML OEO is established based on stimulated Brillouin scattering (SBS) effect, where the Costas-coded probe light is realized by employing an open-loop voltage controlled oscillator (VCO) via electro-optic frequency shift. In the experiment, an LFM-Costas waveform with a 12-bit Costas sequence, a chirp rate of 39.234 MHz/μs and a period of 20.390 μs is generated in the frequency range of 8.020 GHz to 8.820 GHz. The generated LFM-Costas waveform has good pulse-to-pulse coherence according to the correlation results, and has been used to detect two targets with a distance difference of 0.30 m and 0.20 m.\",\"PeriodicalId\":328885,\"journal\":{\"name\":\"Real-time Photonic Measurements, Data Management, and Processing VI\",\"volume\":\"47 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2021-10-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Real-time Photonic Measurements, Data Management, and Processing VI\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1117/12.2601394\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Real-time Photonic Measurements, Data Management, and Processing VI","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1117/12.2601394","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
LFM-Costas waveform generation based on a Fourier domain mode locking optoelectronic oscillator
A linear frequency modulation (LFM)-Costas waveform generation scheme is proposed and experimentally demonstrated based on a Fourier domain mode locking (FDML) optoelectronic oscillator (OEO). The FDML OEO is established based on stimulated Brillouin scattering (SBS) effect, where the Costas-coded probe light is realized by employing an open-loop voltage controlled oscillator (VCO) via electro-optic frequency shift. In the experiment, an LFM-Costas waveform with a 12-bit Costas sequence, a chirp rate of 39.234 MHz/μs and a period of 20.390 μs is generated in the frequency range of 8.020 GHz to 8.820 GHz. The generated LFM-Costas waveform has good pulse-to-pulse coherence according to the correlation results, and has been used to detect two targets with a distance difference of 0.30 m and 0.20 m.
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