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. Issue 3 (9th January 2021)

• Record Type: Journal Article
• Authors: Kumari, Meet; Sharma, Reecha; Sheetal, Anu
• Is Part Of: Transactions on emerging telecommunications technologies. Volume 32:Issue 3(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-01-09
• Subjects: Telecommunication -- Periodicals; 384.05
• DOI: 10.1002/ett.4214
• Languages: English
• ISSNs: 2161-5748

Abstract

Abstract: Time and wavelength division multiplexing passive optical network (TWDM‐PON) is adopted across the globe and is considered as the most remarkable trend of the next‐generation solution to serve exponential traffic growth for fifth‐generation (5G) network. In the interest of achieving 5G network requirements, we propose a mode division multiplexing (MDM) based bidirectional 40/40 Gbps hybrid TWDM‐PON and free‐space optics (FSO) system. The system performance is analyzed for bidirectional hybrid fiber/FSO channels incorporating four distinct Laguerre‐Gaussian (LG00, LG01, LG11, and LG21) spatial modes for variable fiber (10‐155 km)/FSO (10‐1000 m) link ranges and different receiver aperture diameters (20 μm‐60 cm). Based on Gamma‐Gamma (GG) modeled FSO channels using Laguerre Gaussian modes, bit error rate (BER) performance of the system is numerically investigated under the impact of dynamic atmospheric weather conditions, weak‐to‐strong turbulence conditions, pointing errors, and geometric loss (GL) at an acceptable BER of 10 −9 . In addition, to support the numerical analysis, the simulation results exhibit that the hybrid fiber/FSO LG00 signals over 1000 m FSO and 155 km fiber link ranges are successfully transmitted in the system with 40 μm spatial and 60 cm FSO receiver aperture diameters under the impact of strong turbulence, atmospheric attenuation of 0.2 dB/km and noise. Moreover, the performance comparison of the MDM‐based hybrid TWDM‐PON/FSO with the previous latest literature works reveals a superior system performance under practical environment conditions. The proposed work can be utilized to realize long‐reach, bandwidth‐efficient, high‐capacity, and high‐speed data transmission links. Abstract : A 40/40 Gbps MDM‐based hybrid TWDM‐PON/FSO system is proposed and analyzed to achieve 1000 m FSO and 155 km fiber link ranges using GG fading model with pointing error, GL, and noise under different atmospheric conditions. It can be used to realize wired‐wireless links for future access networks.