Abstract
We propose a distributed grating-assisted few-mode fiber (DG-FMF) to reduce the differential mode delay (DMD). By introducing asymmetric long-period fiber gratings with random exposure directions in a step-index few-mode fiber during fiber manufacture process, the strong random mode coupling is generated along the entire length of the fiber. Simulation results show that mean DMD in the DG-FMF can be reduced to less than 12 ns at a distance of 100 km with a period of 514 μm and grating strength of . The DMD reduction in our DG-FMF is guaranteed within the entire C-band, and in a wide temperature range from to .
© 2015 Optical Society of America
Full Article | PDF ArticleMore Like This
Yunhe Zhao, Yunqi Liu, Chenyi Zhang, Liang Zhang, Guangjun Zheng, Chengbo Mou, Jianxiang Wen, and Tingyun Wang
Opt. Lett. 42(22) 4708-4711 (2017)
Chen Jiang, Kaiming Zhou, Bing Sun, Zhiqiang Wang, Ying Wan, Yuehui Ma, Chengbo Mou, Lei Shen, Lei Zhang, Jie Luo, and Yunqi Liu
Opt. Lett. 47(13) 3207-3210 (2022)
Florence Y. M. Chan, Gopinath Mudhana, and P. Shum
Appl. Opt. 54(21) 6558-6565 (2015)