{"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}
引用次数: 0
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.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
