Crosstalk Suppression using Trench-assisted Technique in 9-core Homogeneous Multi Core Fiber

Design and analysis of homogeneous 9-Core Multi core fiber has been done, which is arranged in outer circular ring with eight cores and one core at center. Crosstalk impact has been studied on both outer cores as well as center core, considering 100 km long distance communication. The Crosstalk behaviors with fiber bending radius, wavelength and core-pitch have been investigated analytically. The simulation results illustrate that the crosstalk levels in the proposed 9-core MCF have been reduced remarkably much less than - 50 dB by creating trench around the fiber cores. The relative crosstalk reduction amount has been achieved up to 74 dB by using trench assisted technique.