Design of Few-Mode Fibers With Arbitrary and Flattened Differential Mode Delay

被引：26
|
作者：
Ferreira, Filipe [1 ,2 ]
Fonseca, Daniel [1 ,2 ]
Silva, Henrique [3 ]
机构：
[1] Nokia Siemens Networks Portugal SA Amadora, P-2720093 Amadora, Portugal
[2] Inst Telecomunicaoes, P-3810193 Aveiro, Portugal
[3] Univ Coimbra, Inst Telecomunicaoes, P-3004531 Coimbra, Portugal
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2013年 / 25卷 / 05期
基金：
欧盟第七框架计划;
关键词：
Differential mode delay; few-mode fibers; refractive index profile; INDEX;
D O I：
10.1109/LPT.2013.2241047
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This letter proposes the use of a refractive index profile with a graded core and a cladding trench for the design of few-mode fibers, aiming an arbitrary differential mode delay (DMD) flattened over the C+L band. By optimizing the core grading exponent and the dimensioning of the trench, a deviation lower than 0.01 ps/km from a target DMD is observed over the investigated wavelength range. Additionally, it is found that the dimensioning of the trench is almost independent of the target DMD, thereby enabling the use of a simple design rule that guarantees a maximum DMD deviation of 1.8 ps/km for a DMD target between -200 and 200 ps/km.
引用
收藏
页码：438 / 441
页数：4
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