Design of 31 and 37 cores trench-assisted and air-hole assisted multi-core fibre for high-density space-division multiplexing. Issue 8 (4th May 2022)

• Record Type: Journal Article
• Authors: Singh, Garima; Khorshidahmad, Amin; Kaur, Gurjit; Atieh, Ahmad
• Is Part Of: Journal of modern optics. Volume 69:Issue 8(2022)
• Page Start: 436
• Page End: 441
• Publication Date: 2022-05-04
• Subjects: Multi-core fibre -- trench-assisted (TA) core -- air-assisted hole -- MCF Crosstalk -- space division multiplexing; Optics -- Periodicals; 535
• DOI: 10.1080/09500340.2022.2042746
• Languages: English
• ISSNs: 0950-0340

Abstract

Abstract : In this paper, we have designed two multi-core fibres (MCFs) structures with 31 and 37 trench-assisted and air-hole-assisted cores with reduced inter-core crosstalk (XT). The air-hole pairs and triplets are placed between adjacent trench-assisted cores in order to further suppress modal field overlap. The XT analysis of the 31-core design underlines the significance of enclosing the outer cores with the air-hole structure. The effect of core pitch on the XT is also investigated. Placing the low-index air-hole shield closer to the trench enhances the modal confinement within relatively large trench-assisted core structures. As a result, the lowest possible core-pitch MCF (air-holes touching outer trench boundaries) yielded a minimum inter-core XT of between −60 dB and −70 dB for 100 km of fibre length. Therefore, our 37-core MCF design is suitable for high-density space-division multiplexing applications.