{"title":"高频光相干模拟天线链路","authors":"Ligeng Xu, R. Taylor, S. Forrest","doi":"10.1109/SARNOF.1995.636715","DOIUrl":null,"url":null,"abstract":"In this work we report the demonstration of the first coherent fiber-optic delay line which can introduce true time delays for signals from 0.8 GHz to 1.5 GHz. The frequency range in our experiments is only limited by the Mach-Zehnder modulator employed. The spurious free dynamic range limited by the third order inter-modulation (IM) distortion around 1 GHz is about 80 dB/Hz2/3, for a 5μW optical signal power and 80 pW local oscillator power. It is expected to be 100 dB/Hz2/3 or higher if a balanced receiver is used, and both the LO (local oscillator) and signal optical power are increased. We also describe a four-channel system to demonstrate the full delay switching mechanism.","PeriodicalId":118150,"journal":{"name":"IEEE Princeton Section Sarnoff Symposium","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"1995-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"High frequency optically coherent analog antenna links\",\"authors\":\"Ligeng Xu, R. Taylor, S. Forrest\",\"doi\":\"10.1109/SARNOF.1995.636715\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In this work we report the demonstration of the first coherent fiber-optic delay line which can introduce true time delays for signals from 0.8 GHz to 1.5 GHz. The frequency range in our experiments is only limited by the Mach-Zehnder modulator employed. The spurious free dynamic range limited by the third order inter-modulation (IM) distortion around 1 GHz is about 80 dB/Hz2/3, for a 5μW optical signal power and 80 pW local oscillator power. It is expected to be 100 dB/Hz2/3 or higher if a balanced receiver is used, and both the LO (local oscillator) and signal optical power are increased. We also describe a four-channel system to demonstrate the full delay switching mechanism.\",\"PeriodicalId\":118150,\"journal\":{\"name\":\"IEEE Princeton Section Sarnoff Symposium\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1995-04-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"IEEE Princeton Section Sarnoff Symposium\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/SARNOF.1995.636715\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Princeton Section Sarnoff Symposium","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/SARNOF.1995.636715","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
High frequency optically coherent analog antenna links
In this work we report the demonstration of the first coherent fiber-optic delay line which can introduce true time delays for signals from 0.8 GHz to 1.5 GHz. The frequency range in our experiments is only limited by the Mach-Zehnder modulator employed. The spurious free dynamic range limited by the third order inter-modulation (IM) distortion around 1 GHz is about 80 dB/Hz2/3, for a 5μW optical signal power and 80 pW local oscillator power. It is expected to be 100 dB/Hz2/3 or higher if a balanced receiver is used, and both the LO (local oscillator) and signal optical power are increased. We also describe a four-channel system to demonstrate the full delay switching mechanism.
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