Design analysis for ultra-low crosstalk in high core count heterogeneous multicore fiber

• 作者: Dablu Kumar Rakesh Ranjan
• 来源期刊: 光电子快报（英文版）
• 年，卷（期）: 2021,（10）
• 所属期刊栏目: Optical Fibers and Communications
• 页码范围: 616-621
• 页数: 6页
• 语种: 英文
• DOI: 10.1007/s11801-021-1013-6

摘要

Design analysis of high core count(36-core,37-core)un-coupled multicore fiber(MCF)using the heterogeneous core has been proposed,to achieve the high spatial efficiency and ultra-low crosstalk(～-81 dB/100 km)under the limited cladding diameter of 300 μm.To realize the ultra-low crosstalk level between the neighboring cores,the combination of two crosstalk reduction approaches,trench-assisted(TA)core and propagation direction interleaving(PDI)tech-nique has been used.The forward and backward crosstalk characterizations have been studied in heterogeneous MCF with respect to fiber bending radius,wavelength,transmission distance,and core-pitch with both normal step-index and trench-assisted cores under single-mode propagation condition.