论文部分内容阅读
随着人们对通信容量的需求日益增大,基于微环谐振腔产生的光频梳,可以很好地满足通信系统的光源要求。光频梳具有光谱范围广、相干性高、集成化等特点,由于光频梳是基于四波混频效应产生的,因此对微环谐振腔的色散曲线要求比较严格。总结了目前几种控制微环谐振腔色散特性的最新研究,包括改变微环的宽度等,利用slot结构和微环结构相结合,采用光子晶体结构等方法,对这些结构的优缺点及性能作了比较分析。同时还对进一步优化微谐振腔的色散曲线提出了展望,利用微环和光子晶体结构的组合方法,有可能实现较小光谱范围内色散曲线的优化,提高四波混频的效率。
With the increasing demand for communication capacity, the optical frequency comb generated by the micro-ring resonator can well meet the light source requirements of the communication system. Optical frequency comb has the characteristics of wide spectral range, high coherence, and integration. Since the optical frequency comb is generated based on the four-wave mixing effect, the dispersion curve of the microring resonator is more stringent. Recent studies on the dispersion characteristics of micro-ring resonant cavity are summarized, including changing the width of the micro-ring, using the combination of slot structure and micro-ring structure, adopting photonic crystal structure and other methods to evaluate the advantages and disadvantages of these structures and their performance A comparative analysis. At the same time, the prospect of further optimizing the chromatic dispersion curve of microresonator is put forward. By using the combination of microring and photonic crystal structure, it is possible to optimize the chromatic dispersion curve in a small spectral range and improve the efficiency of four-wave mixing.