Wang Yamiao, Zhang Xia, Ren Xiaomin, Zheng Long, Liu Xiaolong, Huang Yongqing
Key Laboratory of Information Photonics and Optical Communications (BUPT), Ministry of Education, Institute of Optical Communications and Optoelectronics, Beijing University of Posts and Telecommunications, Room 741, P.O. Box 66, Beijing 100876, China.
Appl Opt. 2010 Jan 20;49(3):292-7. doi: 10.1364/AO.49.000292.
We present a novel and robust design for a photonic crystal fiber with flattened dispersion, a highly nonlinear coefficient, and low confinement loss for its dual concentric core structure. The proposed fiber has a modest number of design parameters. Analysis results show that the proposed eight-ring photonic crystal fiber is obtained with a nonlinear coefficient greater than 33 W(-1) km(-1) and a near-zero dispersion slope of -7.828 x 10(-4) ps/nm(2)/km at 1550 nm. Ultraflat dispersion with a value between -1.380 and +0.9860 ps/nm/km and a superlow-order confinement loss of 10(-4) dB/km are simultaneously obtained ranging from 1400 to 1625 nm. For practical fabrication, the influence of random imperfections of airhole diameters on dispersion and nonlinearity is discussed to verify the robustness of our design.
我们提出了一种新颖且稳健的光子晶体光纤设计，该光纤具有扁平色散、高非线性系数以及针对其双同心纤芯结构的低限制损耗。所提出的光纤具有适度数量的设计参数。分析结果表明，所提出的八环光子晶体光纤在1550nm处具有大于33W⁻¹km⁻¹的非线性系数和-7.828×10⁻⁴ps/nm²/km的近零色散斜率。在1400至1625nm范围内同时获得了-1.380至+0.9860ps/nm/km之间的超扁平色散以及10⁻⁴dB/km的超低阶限制损耗。对于实际制造，讨论了气孔直径随机缺陷对色散和非线性的影响，以验证我们设计的稳健性。
