提出了色散平坦渐减光纤的一种新型色散模型.从频域的全场方程出发,通过数值计算对该种光纤中平坦超连续谱的产生展开了较系统深入的研究.研究表明,该种光纤相比常规色散平坦渐减光纤可以产生更宽的平坦超连续谱,其平坦谱宽可达1000nm以上.进一步的研究表明,光纤的初始峰值色散参量、色散参量微分常量、渐减系数和抽运脉冲的宽度、孤子阶数、初始啁啾等参数对该种光纤中平坦超宽超连续谱的形成都有着非常重要的影响. A new dispersion model of dispersion-flattened tapered fiber is proposed. Starting from the full-field equation in frequency domain, a systematic and in-depth study on the generation of flat supercontinuum in such fiber is carried out by numerical calculation. Compared with conventional flattening and flattening fiber, the optical fiber can produce a wider flat supercontinuum with a wide spectral width of more than 1000nm.Further studies show that the initial peak dispersion parameter, the dispersion constant, the decreasing coefficient and the pumping The pulse width, the soliton order, the initial chirp and other parameters have a very important influence on the formation of flat super-wide supercontinuum in this fiber.