The role and challenges of free-space optical systems

S Chaudhary, A Amphawan - Journal of Optical Communications, 2014 - degruyter.com
Complementing wireless radio networks with free-space optics (FSO) achieves high data
rates by modulating radio subcarriers over an optical carrier without expensive optical fiber …

New generation free-space optical communication systems with advanced optical beam stabilizer

A Bekkali, H Fujita, M Hattori - Journal of Lightwave Technology, 2022 - opg.optica.org
In this paper, we introduce a novel concept and design of a full-duplex and all-optical FSO
transceiver and evaluate its transmission performance in 200 m outdoor environment. Our …

Transmission analysis of OFDM-based wireless services over turbulent radio-on-FSO links modeled by gamma–gamma distribution

A Bekkali, CB Naila, K Kazaura… - IEEE photonics …, 2010 - ieeexplore.ieee.org
Radio-on-free space optical (RoFSO) communication systems are rapidly gaining popularity
as an efficient and cost-effective means of transferring high data rates and radio frequency …

A high-speed radio-over-free-space optics link using wavelength division multiplexing-mode division multiplexing-multibeam technique

M Balasaraswathi, M Singh, J Malhotra… - Computers & Electrical …, 2020 - Elsevier
Abstract Radio-over-Free-Space Optics (RoFSO) is a key technology for providing high-
speed communication links in rural areas. In this work, an orthogonal frequency division …

Solid core PCF-based mode selector for MDM-Ro-FSO transmission systems

S Chaudhary, A Amphawan - Photonic Network Communications, 2018 - Springer
Abstract Radio-over-free-space (Ro-FSO) technology is a combination of free-space optics
(FSO) and radio over fiber. It plays a significant role in radio-frequency signal transmission in …

2× 20 Gbps-40 GHz OFDM Ro-FSO transmission with mode division multiplexing

A Amphawan, S Chaudhary… - Journal of the European …, 2014 - jeos.edpsciences.org
Radio-over-Free-Space-Optics (Ro-FSO) is a promising technology for future wireless
networks. In this work, we have designed a hybrid orthogonal frequency division …

Transmission analysis of digital TV signals over a radio-on-FSO channel

CB Naila, K Wakamori, M Matsumoto… - IEEE …, 2012 - ieeexplore.ieee.org
Recently, radio-on-free-space optical (RoFSO) technology is regarded as a new universal
platform for enabling seamless convergence of fiber and FSO communication networks, thus …

Transmission analysis of OFDM-based services over line-of-sight indoor infrared laser wireless links

DR Kolev, K Wakamori… - Journal of Lightwave …, 2012 - ieeexplore.ieee.org
Radio-on-free space optical (RoFSO) communication systems are gaining popularity
because of their ability to transmit simultaneously multiple radio frequency signals …

Free-space optical communication systems for B5G/6G networks

A Bekkali, H Fujita, M Hattori - Optoelectronics and Communications …, 2021 - opg.optica.org
Free-Space Optical Communication Systems for B5G/6G Networks Page 1 Free-Space Optical
Communication Systems for B5G/6G Networks Abdelmoula Bekkali (*), Hideo Fujita and …

Fiber-to-fiber FSO system with advanced VCM controlled laser beam pointing and tracking

A Bekkali, H Fujita, M Hattori - 2021 Optical fiber …, 2021 - ieeexplore.ieee.org
We evaluate the performance of our fiber-to-fiber FSO transceiver with intelligent VCM-lens-
controlled laser beam pointing and tracking. We demonstrate error-free-transmission of …