相干且频率锁定的正交多载波光源产生技术在光通信领域有着诸多应用,能广泛用于微波光子学、全光信号处理以及波分复用(WDM)技术和正交频分复用(OFDM)技术.互联网数据业务的快速增长使得超宽带大容量骨干网传输技术越来越受到世界各国的重视,而要实现Tb/s超大容量传输,目前使用的最主要的方法是光的波分复用(WDM)或正交频分复用(OFDM)技术.作为实现光WDM或OFDM的一项关键技术,相干和频率锁定的正交多波长光源技术引起了国内外各大科研机构的强烈关注.介绍了国内外多载波技术的现状以及多载波产生的多种方案,并对每一个方案进行了对比分析,为未来的研究提供了一些参考.

The generation of coherent frequency-locked orthogonal multi-carrier light source has many applications in the optical communication.It can be widely used in microwave photonics,all optical signal process,wavelength division multiplexing(WDM) and orthogonal frequency division multiplexing(OFDM).With the rapid growth of Internet broadband service,all countries of the world are paying more attention to the ultra-wideband and high-capacity backbone network transmission technology.Now the main way to realize Tb/s high-capacity transmission is using optical wavelength division multiplexing(WDM) or orthogonal frequency division multiplexing(OFDM).The technology of coherent frequency-locked multi-carrier light,as a key to realize optical WDM or OFDM,is becoming an attractive worldwide research topic.In this paper,the current situation of the technology of multi-carriers and some schemes of generation of multi-carriers and the comparison of all schemes are discussed to provide a reference for future researches.