双零色散点锥型微结构光纤的超连续谱

发布时间：2018-04-10 01:09

  本文选题：微结构光纤　切入点：拉锥　出处：《光电工程》2016年03期

【摘要】：用"快速低温"法,在保持包层空气填充率不变的情况下,对实验室自制的微结构光纤进行了拉锥,得到了锥长分别为8 mm、10 mm的锥形光纤。利用多极法模拟可知,拉锥前光纤在1 129 nm具有单个零色散点,拉锥后光纤锥腰处出现双零色散点,对于8 mm、10 mm锥长,其零色散点分别为806 nm/2 456 nm和637 nm/1 164nm。8 mm锥微结构光纤在中心波长800 nm、平均功率0.45 W的超短脉冲作用下,产生了378 nm~1 632 nm、1777 nm~2 450 nm平坦度为20 d B的超连续谱;当功率为0.50 W时,10 mm锥微结构光纤位于1 164 nm的零色散点限制了拉曼孤子及超连续谱的红移,但在395 nm~475 nm形成谱宽为80 nm峰,频率上转换效率达到70.5%。
[Abstract]:Under the condition of keeping the cladding air filling rate constant, the micro-structure fiber made by the laboratory was tapered by "fast low temperature" method, and the tapered fiber with a cone length of 8 mm or 10 mm was obtained.The multipole simulation shows that the fiber has a single zero dispersion point at 1 129 nm, double zero dispersion point appears at the waist of the tapered fiber, and the length of the cone is 8 mm or 10 mm.Its zero dispersion points are 806 nm/2 456nm and 637 nm/1 164nm.8 mm taper microstructures, respectively. Under the action of an ultrashort pulse with a central wavelength of 800nm and an average power of 0.45W, a super-continuous spectrum of 378 nm~1 632 nm / nm~2 1777 nm~2 450nm flatness 20 dB is obtained.When the power is 0.50W, the zero dispersion point of 10mm tapered fiber at 1 164nm limits the red shift of Raman soliton and supercontinuum spectrum, but the spectral width is 80 nm at 395 nm~475 nm, and the frequency upconversion efficiency reaches 70.5 nm.
【作者单位】： 燕山大学信息科学与工程学院;河北省特种光纤与光纤传感重点实验室;
【基金】：国家自然科学基金(61205084、61405173、61275093、61307110、61405172)资助 河北省自然科学基金(F2010203122、F2014203194)资助 河北省教育厅科学研究计划(QN20131044)资助
【分类号】：TN253
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本文编号：1728977