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Chin. Phys. B, 2008, Vol. 17(3): 1029-1033    DOI: 10.1088/1674-1056/17/3/047

All-fibre micro-ring resonator based on tapered microfibre Xiao-Wei(董小伟), Lu Shao-Hua(鲁韶华), Feng Su-Chun(冯素春), Xu Ou(许鸥), and Jian Shui-Sheng(简水生)
State Key Laboratory of All Optical Network & Advanced Telecommunication Network,Institute of Lightwave Technology, Beijing Jiaotong University, Beijing 100044, China
Abstract  In this paper, bendloss characteristics of an optical fibre are investigated in detail, and the results show that the resonator with a smaller ring radius, wider free spectrum range (FSR), higher fineness ($f$) and quality-factor ($Q$) can be achieved by using microfibres. Based on the improved fused taper technique, a high-quality microfibre with 5\,$\mu$m radius has been fabricated, and an all-fibre micro-ring resonator with a radius of only 500\,$\mu$m is realized using self-coiling coupling method. The good-resonant characteristic makes the all-fibre device be expected to avoid bendloss and connection loss associated with planar waveguide integration.
Keywords:  all-fibre device      micro-ring resonator      microfibre      fused taper  
Received:  11 March 2007      Revised:  10 September 2007      Accepted manuscript online: 
PACS:  42.81.Bm (Fabrication, cladding, and splicing)  
  42.81.Wg (Other fiber-optical devices)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No 60607001), the Natural Science Foundation of Beijing, China (Grant No 4052023) and the Talents of Beijing Jiaotong University, Beijing, China (Grant No 2007RC015).

Cite this article: Xiao-Wei(董小伟), Lu Shao-Hua(鲁韶华), Feng Su-Chun(冯素春), Xu Ou(许鸥), and Jian Shui-Sheng(简水生) All-fibre micro-ring resonator based on tapered microfibre 2008 Chin. Phys. B 17 1029

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