Theoretical investigation of the capacity of space division multiplexing with step-index air-clad silica optical fibers
Savović, Svetislav • Djordjevich, Alexandar • Savović, Isidora • Drljača, Branko • Simović, Ana • Min, Rui
Funding
National Natural Science Foundation of China (62003046, 6211101138)
Guangdong Provincial Department of Science and Technology (2021A1313030055)
Serbian Ministry of Education, Science, and Technological Development (Agreement No. 451- 03-68/2020-14/200122)
Strategic Research Grant of the City University of Hong Kong (Project No. CityU 7004600)
Science Fund of the Republic of Serbia (Agreement No. CTPCF-6379382)
Innovation Team Project of Guangdong Provincial Department of Education (2021KCXTD014)
Special project in key field of the Guangdong Provincial Department of Education (2021ZDZX1050)
Guangdong Basic and Applied Basic Research Foundation (2021A1515011997)
Guangdong Provincial Department of Science and Technology (2021A1313030055)
Serbian Ministry of Education, Science, and Technological Development (Agreement No. 451- 03-68/2020-14/200122)
Strategic Research Grant of the City University of Hong Kong (Project No. CityU 7004600)
Science Fund of the Republic of Serbia (Agreement No. CTPCF-6379382)
Innovation Team Project of Guangdong Provincial Department of Education (2021KCXTD014)
Special project in key field of the Guangdong Provincial Department of Education (2021ZDZX1050)
Guangdong Basic and Applied Basic Research Foundation (2021A1515011997)
Abstract
We studied the effect of mode coupling on the space division multiplexing (SDM) capabilities of multimode step-index (SI) air-clad silica optical fibers by numerically solving the power flow equation. Mode coupling considerably reduces the length of these fibers at which space division multiplexing may be achieved with minimal crosstalk between neighboring optical channels, according to the findings. Up to 120 m and 30 m, respectively, the two and three spatially multiplexed channels in the investigated multimode step-index silica optical fibers can be used with low crosstalk. When building a space division multiplexing-based optical fiber transmission system, such characterization of optical fibers should be taken into account.