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《Acta Optica Sinica》 2009-12
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An Asymmetric Dual-Core Photonic Crystal Fibers Coupler

Wu Wanqing Xu Feng Chen Bo Xu Haifeng Li Min Shi MiaomiaoTao Dashi Yu Benli(Key Laboratory of Opto-Electronic Information Acquisition and Manipulation,Ministry of Education,Anhui University,Hefei,Anhui 230039,China)  
A broad-band optical fiber coupler with asymmetric dual-core photonic crystal fiber is proposed based on theoretic analysis.Analysis of numerical simulation shows that coupling ratio of the coupler is flattened in a wider range of wavelength.The influence of the size of air hole between the two the core of the coupler and the polarization of propagating light on the characteristic of coupling by using the finite element method is simulated and analyzed.The results show that the optical fiber coupler with asymmetric dual-core photonic crystal fibers has a 50% coupling ratio with a ±4% dependence on the wavelength over 1.3 μm~1.8 μm,so it is suitable for optical fiber communications and other fields of broad-band couplers with the demand.
【Fund】: 安徽省高等学校青年教师科研“资助计划”(05010209)资助课题
【CateGory Index】: TN253
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