激光与光电子学进展, 2018, 55 (7): 070601, 网络出版: 2018-07-20  

环状光纤椭圆双折射对一阶OAM-PMD的影响 下载: 598次

Influence of Elliptical Birefringence on First-Order OAM-PMD in Ring Fibers
史丙鑫 1,2张霞 1,2白成林 1,2,*
作者单位
1 聊城大学物理科学与信息工程学院, 山东 聊城 252059
2 山东省光通信科学与技术重点实验室, 山东 聊城 252059
摘要
基于环状光纤的OAM-PMD动态方程和固定双折射级联模型,推导了OAM模式的一阶OAM-PMD系数方程,并仿真了环状光纤具有一定椭圆度时,几何双折射对OAM模式对应的本征奇-偶模的有效折射率差的影响,以及一阶OAM-PMD系数随角频率的变化。结果表明,OAM模式的一阶OAM-PMD系数不仅与OAM模式对应的奇-偶模的有效折射率差有关,还会随角频率变化而变化,并且环状光纤椭圆度的增大会导致OAM模式的一阶OAM-PMD系数增大,且对相对低阶的OAM模式的一阶OAM-PMD系数影响更明显,从而严重影响OAM模式复用系统的性能和传输距离。
Abstract
We derive the coefficient equation for the first-order orbital angular momentum-polarization mode dispersion (OAM-PMD) of OAM mode in a ring fiber by using the OAM-PMD dynamic equation and the fixed birefringence cascaded model. We also numerically calculate the influences of geometrical birefringence on the effective refractive index difference between the odd and even modes that constitute the OAM mode and calculate the variation of first-order OAM-PMD coefficient with the angular frequency under different ellipticities of ring fibers. The results show that the first-order OAM-PMD coefficient is determined not just by the effective refractive index difference between the odd and even modes that constitute the OAM mode, but also by its variation with the angular frequency. We find that the ellipticity of the ring fiber increases the first-order OAM-PMD coefficient, particularly for relative lower-order OAM modes, and thus severely limit the property and propagation distance of the OAM modes.
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史丙鑫, 张霞, 白成林. 环状光纤椭圆双折射对一阶OAM-PMD的影响[J]. 激光与光电子学进展, 2018, 55(7): 070601. Shi Bingxin, Zhang Xia, Bai Chenglin. Influence of Elliptical Birefringence on First-Order OAM-PMD in Ring Fibers[J]. Laser & Optoelectronics Progress, 2018, 55(7): 070601.

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