Optical Microwave Frequency Up-Conversion Via a Frequency-Doubling Optoelectronic Oscillator
Optical Microwave Frequency Up-Conversion Via a Frequency-Doubling Optoelectronic Oscillator
复制标题
DOI：
10.1109/lpt.2007.905669
复制
发表时间：
2007-10
影响因子：
2.6
通讯作者：
M. Shin;Premjeet Kumar
中科院分区：
文献类型：
--
作者：
M. Shin;Premjeet Kumar
我们提出并演示了一种光学微波调制器，该调制器包含低相位噪声光电振荡器（OEO），用于光纤无线电系统中的频率上变频。单个 Mach-Zehnder 铌酸锂波导调制器在倍频 OEO 中用作本地振荡器，将基带信号直接上变频到载波频带。我们演示了中频 (IF) 频段光模拟信号和 1.25 Gb/s 光数字信号的频率上变频至 20 GHz 频段。对于 50.5 km 的单模光纤传输，测得的 IF 调制信号传输带宽大于 1.5 GHz。
We propose and demonstrate an optical microwave modulator that incorporates a low phase-noise optoelectronic oscillator (OEO) for frequency up-conversion in a radio-over-fiber system. A single Mach-Zehnder lithium-niobate waveguide modulator working as a local oscillator in a frequency-doubling OEO directly up-converts the baseband signals to a carrier band. We demonstrate frequency up-conversion to the 20-GHz band for optical analog signals in the intermediate-frequency (IF) band and for optical digital signals at 1.25 Gb/s. The measured transmission bandwidth for IF modulated signals is greater than 1.5 GHz for transmission over 50.5 km of single-mode fiber.