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Title	Development Of A Cost-Effective Optical Network Based On Free Space Optical (Fso) And Optical Fiber Links For Enabling Smart City Infrastructure: A Hybrid Approach
ID_Doc	19560
Authors	Singh H.; Miglani R.; Mittal N.; Singh H.; Kaur J.; Gupta A.
Year	2023
Published	Optical Fiber Technology, 81
DOI	http://dx.doi.org/10.1016/j.yofte.2023.103544
Abstract	Due to the gigantic rise in the use of high data rate-based applications and the ongoing transformation of Indian cities into smart cities, there is a need for a high-speed communication framework to handle the enormous data traffic. The radio frequency (RF) and microwave links seem to be incapable of offering sufficient bandwidth required by the data-hungry applications and consequently, the need for a more effective solution for tackling the issue of scarcity of bandwidth resources has become the necessity of current network infrastructure in India. In this study, a hybrid optical fiber-free space optical (OF-FSO) system for offering high-speed data services has been proposed to assist the implementation of smart city infrastructure in India. This study aims to inspect the system performance of the proposed model under the climatic conditions of mountainous, desert, flatland, and seaside regions of India. The proposed hybrid OF-FSO system comprises a fixed single-mode fiber (SMF) of 20 km and an FSO link (having a varied transmission range between 0–2 km). The proposed hybrid model can support an FSO link of 1.72 km for a fixed SMF of 20 km, corresponding to a bit error rate of the order of 10−4 for atmospheric conditions of the seaside location of Chennai and the range of FSO link varies from 1.32 km to 1.57 km for other locations of India, for the same length of SMF and bit error rate. Furthermore, the proposed hybrid OF-FSO has demonstrated a reduction of 30.8% in Capital Expenditure (CAPEX) cost in contrast to the conventional passive optical network (PON) system. © 2023 Elsevier Inc.
Author Keywords	Bit error rate; Fog; FSO; OFDM; PON; Signal-to-noise ratio

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