Effects of Core Count and Layout on the Bending-Radius-Dependent Crosstalk Variations in Heterogeneous and Trench-Assisted Heterogeneous Multicore Fiber

  • Umar FarooqueEmail author
  • Rakesh Ranjan
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 546)


Effects of increasing core count in limited cladding diameter and cladding thickness constraints and their arrangements, i.e., core layouts on the crosstalk variation in heterogeneous and trench-assisted (TA) heterogeneous MCFs are investigated using the expression of crosstalk derived from the coupled mode equations and the finite element method (FEM) based FemSIM software. Only two kinds of heterogeneous cores having different core radius and refractive index are used in the present analysis. For 12-Core TA MCF, approx. 35 dB of crosstalk level can be optimized by proper selection of core layout, and whereas for high core count such as 24-Core and 30-Core TA MCFs, this value reduces to 30 dB and 20 dB, respectively, due to the decrease in the core pitch and the increase in the number of surrounding cores. This result shows that core count and layout have a significant impact on the crosstalk variations in MCFs.


Heterogeneous Trench-assisted Multicore fiber Crosstalk Core pitch Core layout Core count Bending radius 



The authors are thankful to the National Institute of Technology, Patna for immense support to carry out this work.


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© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  1. 1.Department of Electronics and Communication EngineeringNational Institute of Technology PatnaPatnaIndia

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