{"title":"连续时间光子时间拉伸模数转换器的盲信号重建。","authors":"Yuhang Guo, Jingbo Li, Jianping Chen, Guiling Wu","doi":"10.1364/OL.550391","DOIUrl":null,"url":null,"abstract":"<p><p>Here, we propose a blind signal reconstruction scheme for continuous-time photonic time stretch (CT-PTS) analog-to-digital converters (ADCs). The dynamic envelope extraction is realized online through low-pass filtering avoiding the effect of system parameter fluctuation. Channel mismatch is blindly corrected by processing the overlapping segments between adjacent channels using the least mean squares algorithm. The proposed scheme is experimentally validated on a four-channel CT-PTS ADC. The spurious free dynamic range of the CT-PTS ADC has a more than 10.9 dB improvement after mismatch correction. Frequency measurement with an error of less than ±7 MHz is achieved in the frequency range of 1 GHz to 26.25 GHz. A 10 MHz frequency resolution is also validated through a dual-tone test at 10 GHz.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 5","pages":"1653-1656"},"PeriodicalIF":3.3000,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Blind signal reconstruction for continuous-time photonic time-stretch analog-to-digital converters.\",\"authors\":\"Yuhang Guo, Jingbo Li, Jianping Chen, Guiling Wu\",\"doi\":\"10.1364/OL.550391\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>Here, we propose a blind signal reconstruction scheme for continuous-time photonic time stretch (CT-PTS) analog-to-digital converters (ADCs). The dynamic envelope extraction is realized online through low-pass filtering avoiding the effect of system parameter fluctuation. Channel mismatch is blindly corrected by processing the overlapping segments between adjacent channels using the least mean squares algorithm. The proposed scheme is experimentally validated on a four-channel CT-PTS ADC. The spurious free dynamic range of the CT-PTS ADC has a more than 10.9 dB improvement after mismatch correction. Frequency measurement with an error of less than ±7 MHz is achieved in the frequency range of 1 GHz to 26.25 GHz. A 10 MHz frequency resolution is also validated through a dual-tone test at 10 GHz.</p>\",\"PeriodicalId\":19540,\"journal\":{\"name\":\"Optics letters\",\"volume\":\"50 5\",\"pages\":\"1653-1656\"},\"PeriodicalIF\":3.3000,\"publicationDate\":\"2025-03-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Optics letters\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://doi.org/10.1364/OL.550391\",\"RegionNum\":2,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"OPTICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Optics letters","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1364/OL.550391","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"OPTICS","Score":null,"Total":0}
Blind signal reconstruction for continuous-time photonic time-stretch analog-to-digital converters.
Here, we propose a blind signal reconstruction scheme for continuous-time photonic time stretch (CT-PTS) analog-to-digital converters (ADCs). The dynamic envelope extraction is realized online through low-pass filtering avoiding the effect of system parameter fluctuation. Channel mismatch is blindly corrected by processing the overlapping segments between adjacent channels using the least mean squares algorithm. The proposed scheme is experimentally validated on a four-channel CT-PTS ADC. The spurious free dynamic range of the CT-PTS ADC has a more than 10.9 dB improvement after mismatch correction. Frequency measurement with an error of less than ±7 MHz is achieved in the frequency range of 1 GHz to 26.25 GHz. A 10 MHz frequency resolution is also validated through a dual-tone test at 10 GHz.
期刊介绍：
The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community.
Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.
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