Multifunctional fiber-optic microwave links based on remote heterodyne detection

被引：77

作者：

Gliese, U ^{[1
]}

Nielsen, TN ^{[1
]}

Norskov, S ^{[1
]}

Stubkjaer, KE ^{[1
]}

机构：

[1] Tech Univ Denmark, Ctr Broadband Telecomm, Dept Electromagnet Syst, DK-2800 Lyngby, Denmark

来源：

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 1998年 / 46卷 / 05期

关键词：

microwave communication; millimeterwave communication; optical-fiber communication; optical phase-locked loops; semiconductor lasers; signal processing;

D O I：

10.1109/22.668642

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The multifunctionality of microwave links based on remote heterodyne detection (RHD) of signals from a dual-frequency laser transmitter is discussed and experimentally demonstrated in this paper. Typically, direct detection (DD) in conjunction with optical intensity modulation is used to implement fiber-optic microwave links. The resulting links are inherently transparent. As opposed to DD links, RHD links can perform radio-system functionalities such as modulation and frequency conversion in addition to transparency. All of these three functionalities are presented and experimentally demonstrated with an RHD link based on a dual-frequency laser transmitter with two offset phase-locked semiconductor lasers, In the modulating link, a 1-Gb/s baseband signal is QPSK modulated onto a 9-GHz RF carrier, The frequency converting link demonstrates up-conversion of a 100-Mb/s PSK signal from a 2-GHz carrier to a 9-GHz carrier with penalty-free transmission over 25 km of optical fiber. Finally, the transparent link transmits a standard FM video 7.6-GHz radio-link signal over 25 km of optical fiber without measurable distortion.

引用

页码：458 / 468

页数：11

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