超连续谱(SC)是当今光通信领域中的研究热点问题之一,应用非常广泛.本文主要利用掺钛蓝宝石飞秒激光器产生的超短脉冲对双锥双光纤进行超连续谱的实验研究.双锥双光纤是由两根普通单模光纤以一定的方式沿光纤轴向均匀拉制而成.实验结果显示:超连续光谱随着输入功率和拉锥长度增加而展宽,拉锥直径大小对双锥双光纤超连续谱展宽有很大影响,同时实验证明在输入功率相同的情况下,双锥双光纤与普通光纤相比可以产生更宽、更平坦的超连续谱.%As one of the hotspet, supercontinuum is researched in optical communication field nowadays. This paper mainly investigates supercontinuum generation in biconical double fiber by using Ti-sapphire laser with ultrashort pulses. Biconical double fiber is made of two single mode optical fibers drawn from the axial in a certain way. The results show that the supercontinuum broaden increases with the increasing of input power and tapered length. Diameters of the tapered fiber have a great influence on supercontinuum broadening. Compared with the ordinary optical fiber,biconical double fiber can generate wider and more flat supercontinuum at same incident power.
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