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随着20世纪90年代末光子晶体光纤的问世,人们利用这种具有诸多优良特性的新型光导纤维极大地拓展了制造超宽带、高亮度相干超连续谱光源的研究空间,大批新技术、新方法不断涌现。在实际应用中,采用在宽波段范围内产生的平坦超连续谱光源,不仅可以满足系统对光谱带宽的要求,还能提高测量精度,降低功率均衡的技术难度,平坦超连续谱光源已成为国内外研究机构的重要研发方向。简要介绍了国外各机构的相关研究项目信息,对利用超短脉冲及连续光抽运光纤产生超连续谱及光谱调控技术的发展现状进行了总结,对平坦超连续谱的发展方向进行了展望。
With the advent of photonic crystal fiber in the late 1990s, people have greatly expanded the research space for manufacturing ultra-wideband and high-brightness coherent supercontinuum light sources by using this new type of optical fiber with many excellent features. A large number of new technologies and new methods keep appearing. In practice, using a flat supercontinuum light source generated in a wide wavelength range can not only meet the requirements of the system for spectral bandwidth, but also improve the measurement accuracy and reduce the technical difficulty of power balance. The flat supercontinuum light source has become a domestic Foreign research institutes important research and development direction. Briefly introduce the relevant research projects of various agencies in foreign countries, summarize the development status of supercontinuum generation and spectral modulation technology by using ultrashort pulse and continuous optical pumping fiber, and prospect the developing direction of flat supercontinuum.