光学学报, 2013, 33 (9): 0906010, 网络出版: 2013-07-16   

少模光纤模式差分群时延的设计与优化 下载: 522次

Design and Optimization of Mode Differential Group Delay for Few-Mode Fiber
作者单位
华中科技大学下一代互联网接入系统国家工程实验室, 湖北 武汉 430074
摘要
基于少模光纤(FMF)的模分复用(MDM)传输系统,模式差分群时延(MDGD)是影响系统设计的关键因素之一。考虑实际光纤制备工艺,数值分析了阶跃折射率(SI)光纤、渐变折射率(GI)光纤、带有外下陷包层的阶跃型光纤和带有外下陷包层的渐变型光纤中不同的MDGD特性。在支持四个导模条件下,优化设计得到两种不同折射率剖面分布的四模光纤,分别具有较大的MDGD(LP11,LP12,LP02与LP01的MDGD分别是4.65,10.02,11.73 ps/m)和较小的MDGD(LP11,LP12,LP02与LP01的MDGD分别是-0.049, -0.258, -0.168 ps/m)。制备了阶跃折射率分布的少模光纤,其实测基模的损耗为0.23 dB/km(1550 nm)和0.37 dB/km(1310 nm)测量及分析结果证明其能够支持MDM应用。
Abstract
In mode division multiplexing (MDM) transmission system using few-mode fiber (FMF), mode differential group delay (MDGD) is one of the key factors that influence the system performance. Considering the practical fiber fabrication technique, the MDGD characteristics between different modes of step-index (SI) fiber, graded-index (GI) fiber, trench-assisted SI fiber, and trench-assisted GI fiber are numerically investigated. Under the condition of supporting four modes, two optimized refractive index profiles of FMFs with high and low MDGDs are presented. The high MDGDs of LP11, LP12, LP02 versus LP01 are 4.65, 10.02, 11.73 ps/m, respectively; while low MDGDs of LP11, LP12, LP02 versus LP01 are -0.049, -0.258, -0.168 ps/m, respectively. We fabricate and characterize the FMF with a SI profile, whose loss of fundamental mode is 0.23 dB/km at 1550 nm and 0.37 dB/km at 1310 nm. The measurement and analysis results indicate that it can be used for future MDM transmission system.

谢意维, 付松年, 张海亮, 唐明, 沈平, 刘德明. 少模光纤模式差分群时延的设计与优化[J]. 光学学报, 2013, 33(9): 0906010. Xie Yiwei, Fu Songnian, Zhang Hailiang, Tang Ming, Shen Ping, Liu Deming. Design and Optimization of Mode Differential Group Delay for Few-Mode Fiber[J]. Acta Optica Sinica, 2013, 33(9): 0906010.

本文已被 12 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!