Dablu Kumar,Rakesh Ranjan.Design analysis for ultra-low crosstalk in high core count heterogeneous multicore fiber[J].Optoelectronics Letters,2021,17(10):616-621 Design analysis for ultra-low crosstalk in high core count heterogeneous multicore fiber Author Name Affiliation Dablu Kumar  OFC and Photonics Lab, Department of Electronics and Communication Engineering, National Institute of Technology Patna, Patna 800005, India  Rakesh Ranjan  OFC and Photonics Lab, Department of Electronics and Communication Engineering, National Institute of Technology Patna, Patna 800005, India  Abstract:       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 ?m. 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) technique 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. Hits: 588 Download times: 0 View Full Text    Download reader