Generation of 40 GHz/80 GHz OFDM based MMW source and the OFDM-FSO transport system based on special fine tracking technology

Performance analysis of long‐reach 40/40 Gbps mode division multiplexing‐based hybrid time and wavelength division multiplexing passive optical network/free‐space optics using Gamma‐Gamma fading model with pointing error under different weather conditions

“…Again, it can be viewed that for weak turbulence, LG00 mode outperforms as compared with LG01, LG11, and LG21 modes at SR = 1 because the LG00 has quite strong atmospheric fading resilience as compared with other modes. Furthermore, the GG fading model is reliable for all turbulence conditions where m and n can be obtained from Equations (17) and (18), respectively. For weak turbulence, both m and n are much greater than one and reduces to almost 1 from moderate to strong turbulence condition.…”

“…Furthermore, due to the inherent advantages of both PON and FSO, the hybrid fiber/FSO systems are installed and used for the backup fiber, point-to-point last-mile access and organization connectivity to support system security and geographical constraints. [18][19][20] Due to these attractive features, NG-PON based hybrid PON-FSO system has attracted many researchers' attention. But the performance of the hybrid PON-FSO system is degraded due to severe, random and unpredictable atmospheric turbulence channels of the FSO system.…”

Performance analysis of symmetrical and bidirectional 40 Gbps TWDM-PON employing m-QAM-OFDM modulation with multi-color LDs based VLC system

“…Also, as compared with traditional radio frequency (RF) wireless access, VLC has EMI-free wireless access the indoor as well as outdoor environments. Besides, VLC can be installed and utilized for the backup optical fiber, point-to-point (P2P) last-mile access and organization connectivity to offer the system security in the presence of geographical constraints (Mallick et al 2020;Mohd Nor et al 2019;Prabu et al 2017). Since wireless communication and illumination can be obtained simultaneously, light-emitting diode (LED)-based VLC has been frequently studied (Jani et al 2019;Ma et al 2018;Wu et al 2017).…”

Structure for fast photonic medium on application of SDM communication using SiO 2 doped with GeO 2 , and F Materials

“…Researchers have also continued their work in the field of millimeter‐wave (MMW) communication over fibre as well as orthogonal frequency division multiplexing (OFDM) based free‐space optical (FSO) communication system for next‐generation video, voice, and data communication. Some of the recent articles like OFDM‐based 500 m/10 Gbps FSO transmission system [33], a bidirectional hybrid wireless fibre architecture for 6.25 Gbps OFDM data transmission [34], a 40‐GHz/80 GHz optical MMW source based on OFDM, and an OFDM‐FSO transport system [35], and an OFDM‐based free‐space fibre transport system using a polarization multiplexing technique [36] are reported. However, we have focused on the wired mode of long haul communication using the optical fibre, especially the FMF structure, and simulated experimental setup for verification of the proposed approach.…”