为了探索硫系玻璃光纤器件在中红外波段超连续光源的潜在应用，自主制备了一种硫系玻璃光子晶体光纤，该光纤由组分为As₂S₃的纤芯和呈六边形排列的空气孔的包层所组成。利用波长为2.87 μm，重复频率为42 MHz，脉冲宽度为173 fs的中红外光纤激光器为泵源，利用拉锥硫系玻璃光子晶体光纤研制了中红外超连续谱。经过优化As₂S₃光子晶体光纤的拉锥直径后，其腰身直径为55 μm，长度为3 cm。在该拉锥光纤中实现了-20 dB水平的光谱覆盖范围为2 000~5 500 nm的超连续光谱，实验结果和理论计算结果一致性较好。

The generation of high-repetition rate (f_rep ≥ 10 GHz) ultra-broadband optical frequency combs (OFCs) at 1550 nm and 1310 nm is investigated by seeding two types of highly nonlinear fibers (HNLFs) with 10 GHz picosecond pulses at the pump wavelength of 1550 nm. When pumped near the zero dispersion wavelength (ZDW) in the normal dispersion region of a HNLF, 10 GHz flat-topped OFC with 43 nm bandwidth within 5 dB power variation is generated by self-phase modulation (SPM)-based OFC spectral broadening at 26.5 dBm pump power, and 291 fs pulse trains with 10 GHz repetition rate are obtained at 18 dBm pump power without complicated pulse shaping methods. Furthermore, when pumped in the abnormal dispersion region of a HNLF, OFCs with dispersive waves around 1310 nm are studied using a common HNLF and fluorotellurite fibers, which maintain the good coherence of the pump light at 1550 nm. At the same time, sufficient tunability of the generated dispersive waves is achieved when tuning the pump power or ZDW.