氢氟酸填充腐蚀方法在光子晶体光纤制造中的应用  

Application of Hydrofluoric Acid's Corrosive Properties in the Fabrication of Photonic Crystal Fibers

作　　者：李婧[1] 张伟刚[1] 杜江兵[1] 姜萌[1] 张绮[1] 刘亚萍[1] 刘卓琳[1] 屈柯楠[1] 刘艳格[1] 王志[1] 

机构地区：[1]南开大学现代光学所光电信息技术教育部重点实验室,天津300071

出　　处：《中国激光》2009年第3期705-709,共5页Chinese Journal of Lasers

基　　金：国家自然科学基金(10674075;60577018;10774077);国家863计划(2006AA01Z217);天津市自然科学基金重点项目(06YFJZJC00300);中国博士后科学基金(20060400687)资助课题

摘　　要：提出一种研制光子晶体光纤(PCF)的氢氟酸填充腐蚀新方法。该方法将氢氟酸填充于已拉制的光子晶体光纤空气孔中,通过改变其横截面结构,研制具有特定结构的光子晶体光纤,改变其导光性能。研究表明,随着对光子晶体光纤空气孔腐蚀程度的加深,其泄露损耗和散射损耗不断减小,非线性系数明显提高,纤芯基模的有效折射率和包层的等效折射率相应减小,群速度色散也随之改变。We introduce a new fabrication method for photonic crystal fibers (PCFs) using the hydrofluoric acid's corrosive property. The transversal structure of a PCF can be changed by filling its air-holes with hydrofluoric acid, which corrodes the glass wall around and therefore widens the air-holes. By accurately controlling the hydrofluoric acid corrosion time, we can enlarge the air holes up to millimeter precision. This method can be used as a supplement of the traditional fusing-drawing technology to realize more complicated structures of PCFs in practice. Meanwhile, this method greatly modifies the light-guiding properties of PCFs. Experimental results indicate that, with the increase of corrosion time, the leakage loss and the scattering loss will decrease, the nonlinear coefficient will increase, the effective refractive index of fundamental mode and the equivalent refractive index of cladding will decrease, and the group velocity dispersion will be modified accordingly.

关 键 词：光纤光学 光子晶体光纤 氢氟酸 填充 腐蚀 空气孔 

分 类 号：TN253[电子电信—物理电子学]