Photonic crystal fiber with novel dispersion properties

作     者：Shuqin LOU Shujie LOU Tieying GUO Liwen WANG Weiguo CHEN Honglei LI Shuisheng JIAN 

作者机构：Key Lab of All Optical Network and Advanced Telecommunication Network of EMC Beijing Jiaotong University Shandong Weifang Huaguang Precision Machinery Co. 

出 版 物：《Frontiers of Optoelectronics》 (光电子前沿(英文))

年 卷 期：2009年第2卷第2期

页      面：170-177页

学科分类：070207[理学-光学] 07[理学] 08[工学] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China (Grant No. 60777033) Key Project of Ministry of Education of China (Grant No. 308002) 

主　　题：photonic crystal fiber (PCF) nearly zero flatten dispersion high nonlinear high negative dispersion fabrication technique 

摘      要：Our recent research on designing microstructured fiber with novel dispersion properties is reported in this paper. Two kinds of photonic crystal fibers（PCFs） are introduced first. One is the highly nonlinear PCF with broadband nearly zero flatten dispersion. With introducing the germanium-doped（Ge-doped） core into highly nonlinear PCF and optimizing the diameters of the first two inner rings of air holes, a new structure of highly nonlinear PCF was designed with the nonlinear coefficient up to 47 W–1·km–1at the wavelength 1.55 μm and nearly zero flattened dispersion of ±0.5 ps/（km·nm） in telecommunication window（1460–1625 nm）. Another is the highly negative PCF with a ring of fluorin-doped（Fdoped） rods to form its outer ring core while pure silica rods to form its inner core. The peak dispersion – 1064ps/（km·nm） in 8 nm full width at half maximum（FWHM）wavelength range and – 365 ps/（km·nm） in 20 nm（FWHM） wavelength range can be reached by adjusting the structure parameters. Then, our recent research on the fabrication of PCFs is reported. Effects of draw parameters such as drawing temperature, feed speed, and furnace temperature on the geometry of the final photonic crystal fiber are investigated.