光纤通信中机械误差损耗的研究  被引量:3

Study on mechanical error loss in infrared wavelength-based fiber-optic communications

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作  者:张伟杰[1] 

机构地区:[1]吉林建筑大学计算机科学与工程学院,长春130000

出  处:《光通信研究》2014年第6期52-54,69,共4页Study on Optical Communications

摘  要:深入研究了在1 550和1 330nm波长条件下光纤传输中机械对准误差导致的损耗问题。MATLAB仿真结果表明:高阶模比低阶模有更严重的衰减,单模光纤横向对准误差是最严重的损耗因素;较大的数值孔径时角度对准误差导致的耦合损耗减小,而在数值孔径一样时匹配液折射率越高耦合效率越低,这与端面间隙导致的损耗影响相反。文中的研究对于光纤通信的稳定性发展具有一定的理论和实际意义。This paper studies in depth the losses resulted from the mechanical alignment errors in fiber-optic information trans-missions at 1 550 nm and 1 310 nm.MATLAB simulation results show that attenuation in higher order modes is more serious than that in lower order modes and the lateral alignment error of single-mode fibers is the most serious factor for these losses, and that when the Numerical Aperture (NA)is large,the coupling loss caused by angle deviation is reduced,while when the NA remains the same,the higher the refractive index of matching fluid,the lower the coupling efficiency,which is opposite to the effect on losses arising from the end clearance.The study results in this paper have certain theoretical and practical signifi-cance for the stable development of fiber-optic information communication.

关 键 词:光纤信息传输 红外波长 传播模式 机械误差 损耗 

分 类 号:TN913.7[电子电信—通信与信息系统]

 

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