低损耗双锥光纤的制备与光学特性研究  

Research on Fabrication and Optical Properties of Low Loss Biconical Fiber

作　　者：李杰[1] 吉喆[1] 严英占[1] 刘正[1] 刘俊[1] 闫树斌[1] 

机构地区：[1]中北大学电子测试技术国家重点实验室,仪器科学与动态测试教育部重点实验室,山西太原030051

出　　处：《纳米科技》2011年第2期33-36,62,共5页

基　　金：国家973前期研究专项项目（2009CB326206）; 国家自然科学基金项目（60707014、60778029、50975266）; 重点实验室基金项目（9140C1204040909）; 总装创新项目（7130907）; 山西省自然科学基金项目（20091105916、2010011003-2）; 山西省高等学校优秀青年学术带头人支持计划; 山西省研究生优秀创新项目（20093076）

摘　　要：利用熔拉法制备了双锥光纤,系统地研究了拉制过程中拉制距离、拉制速度、氢气流量等参数与双锥光纤光学传输特性关系,实验表明,拉制距离控制在30mm-32mm,拉制速度在0.15mm/s,氢气流量在140-150之间时,可以得到损耗在0.5dB-0.7dB,锥腰直径介于0.6μm-2.5μm的低损耗双锥光纤。利用自行制备的双锥光纤进行微球腔耦合实验,得到微球腔良好的透射谱线。该范围内的双锥光纤可以高效激发微球腔回廊模式,对微球腔的应用以及双锥光纤在光传感应用方面具有指导意义。Low loss biconical fiber was fabricated by melt-pulling method. The optical transmission dependence of drawn parameters, such as pulling length, speed and Hydrogen flow were investigated in detail. Experiment results show that, pulling length with 30mm-32mm, speeds with 0.15mm/s, and Hydrogen flow with 140-150 are tolerant and efficient. With these fabrication parameters, a biconical fiber with 0.5dB-0.7dB loss, 0.6μm-2.5μm taper diameter is obtained. The optical transforming properties of the biconical fiber are tested with microsphere cavity coupling experiment and the transmission spectrum is achieved. The results reveals that the tapered fiber fabricated can pump the whispering gallery modes of the micro sphere, which makes the foundation of the application of micro sphere and taper fiber.

关 键 词：双锥光纤 制备 耦合特性 

分 类 号：TN302[电子电信—物理电子学]