基带
光学
微波食品加热
光子上转换
光载波传输速率
副载波
材料科学
中频
激光器
光纤
光电子学
调制(音乐)
频率调制
无线电频率
信号(编程语言)
光纤无线电
物理
电信
计算机科学
正交频分复用
频道(广播)
CMOS芯片
声学
程序设计语言
作者
Sze-Chun Chan,Sheng-Kwang Hwang,Jia Ming Liu
出处
期刊:Optics Letters
[The Optical Society]
日期:2006-07-10
卷期号:31 (15): 2254-2254
被引量:93
摘要
A radio-over-fiber system uses light to carry a microwave subcarrier on optical fibers. The microwave is usually frequency modulated for wireless broadcasting. A conventional optical communication system usually operates at the baseband with amplitude modulation. The interface of the two systems thus needs an upconversion from the baseband to the microwave band with AM-to-FM transformation. An all-optical solution employing an optically injected semiconductor laser is investigated. The laser is operated in a dynamic state, where its intensity oscillates at a microwave frequency that varies with the injection strength. When the injection carries AM data, the microwave is frequency modulated accordingly. We demonstrate optical conversion from an OC-12 622-Mbps AM baseband signal to the corresponding FM microwave signal. The microwave is centered at 15.90 GHz. A bit-error rate of less than 10(-9) is measured.
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