Abstract In this paper, a refractive index profile design enabling us to obtain a flat modal field around the fibre centre is investigated. The theoretical approach for designing such multilayer large flattened mode (LFM) optical fibres is presented. A comparison is made between the properties of a three-layer LFM structure and a standard step-index profile with the same core size. The obtained results indicate that the effective area of the LFM fibre is about twice as large as that of the standard step-index fibre, but the LFM fibre has less effective ability to filter out the higher order modes than the standard step-index fibre with the same bending radius.
Received: 23 December 2005
Revised: 20 March 2006
Accepted manuscript online:
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos 10576012 and 60538010).
Cite this article:
Zhao Chu-Jun(赵楚军), Peng Run-Wu(彭润伍), Tang Zhi-Xiang(唐志祥), Ye Yun-Xia(叶云霞), and Fan Dian-Yuan(范滇元) Design and analysis of a kind of large flattened mode optical fibre 2006 Chinese Physics 15 1838
Self-organized voids revisited：Experimental verification of the formation mechanism Song Juan (宋娟), Ye Jun-Yi (叶俊毅), Qian Meng-Di (钱梦迪), Luo Fang-Fang (骆芳芳), Lin Xian (林贤), Bian Hua-Dong (卞华栋), Dai Ye (戴晔), Ma Guo-Hong (马国宏), Chen Qing-Xi (陈庆希), Jiang Yan (姜燕), Zhao Quan-Zhong (赵全忠), Qiu Jian-Rong (邱建荣). Chin. Phys. B, 2014, 23(7): 077901.
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