中国激光, 2012, 39 (12): 1205001, 网络出版: 2012-10-18   

新型大模场光子晶体光纤传输系统及其传输特性分析

Investigation of a Novel Large-Mode-Area Photonic Crystal Fiber Transmission System and Its Transmission Characteristics
作者单位
1 江苏大学机械工程学院, 江苏 镇江 212013
2 东南大学机械工程学院, 江苏 南京 211189
摘要
通过在多模光子晶体光纤的两端分别连接一根单模光子晶体光纤,对其选择合适的参数,形成一种可以实现低弯曲损耗、大模场单模传输的光纤传输系统。运用数值仿真,分析了该传输系统在模场面积、弯曲损耗、连接损耗等方面的特性。研究结果表明,多模光子晶体光纤与单模光子晶体光纤所组成的系统可实现有效的单模传输;工作波长为1064 nm时,多模光子晶体光纤在直波导状态时的基模模场面积可达1593 μm2;在弯曲半径低至10 cm时,多模光子晶体光纤仍然可以保持低损耗传输。经过对多模光子晶体光纤结构参数的优化,其与单模光子晶体光纤的连接损耗降低至0.085 dB。
Abstract
A novel optical fiber transmission system for low bending loss, large mode area and single-mode operation is proposed. The system is composed of a multi-mode photonic crystal fiber (PCF) and two single-mode PCFs. The single-mode PCFs are connected to each side of the multi-mode PCF. Numerical simulation on the mode area, the bending loss, the splicing loss and other aspects of the transmission system indicates that the system can effectively suppress the transmission of higher order modes. In addition, at the operating wavelength of 1064 nm, the multi-mode PCF has a large mode area of 1593 μm2 when it is kept straight, and exhibits a low bending loss even at a small bending radius of 10 cm. The splicing loss between the multi-mode and single-mode PCFs can be as low as 0.085 dB for the optimized PCF configurations.

张银, 陈明阳, 张永康. 新型大模场光子晶体光纤传输系统及其传输特性分析[J]. 中国激光, 2012, 39(12): 1205001. Zhang Yin, Chen Mingyang, Zhang Yongkang. Investigation of a Novel Large-Mode-Area Photonic Crystal Fiber Transmission System and Its Transmission Characteristics[J]. Chinese Journal of Lasers, 2012, 39(12): 1205001.

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