Abstract
Global market forecasts predicted that by 2020, more than 26 billion internet devices and connections universally interconnected will require nearly 3 times the data traffic generated when compared to the year 2015. The increase in data traffic, demands for enormous bandwidth capacity. The potential to deliver 10 Gbps of huge data to individual businesses and households will be of paramount importance and a challenging issue for the present day service providers. An intensive study is carried out for the Fiber-To-The-Home Passive Optical Network (FTTH PON) for their use in the optical communication, due to their high data rates and more bandwidth. The current evolution of Next Generation-Passive Optical Networks Stage 2 (NG-PON2) network is the primary key technology for the growing demands of higher bandwidth and transmission of the data to the subscribers present in the access network from the service providers. Time Wavelength Division Multiplexing PON (TWDM-PON) architecture is the viable essential solution for NG-PON2 which provides more bandwidth for bidirectional transmission. This article proposes a design for extended reach TWDM-PON based on reflective semiconductor optical amplifier (RSOA). The exclusive feature of the RSOA is the wavelength conversion, which replaces the transmitters in the subscriber end. The Quality of Service (QoS) performance is critically analyzed for different optical modulation formats in proposed extended reach TWDM-PON using RSOA. The TWDM-PON using RSOA is simulated and investigated for different photodetectors. The analysis is also carried for various distance and data rates. The results exhibited that APD receivers have better performance of minimum bit error rate obtained is 10-11 and minimum Q factor is 6.2 when compared with PiN receivers. The comparative analysis of different modulation formats shows that the Carrier Suppressed Return to Zero- Differential Phase Shift Keying (CSRZ-DPSK) gives the best performance for longer distance and large data rates and Return to Zero(RZ) gives the least performance.
Highlights
In today’s world we are bombarded with high performance networking system like laptops, smartphone, and their applications requiring more bandwidth like Internet of Things (IoT), remote medical services, cloud computing, file sharing, cloud storage, video and web conference, online audio and video streaming
The proposed design of Next Generation-Passive Optical Networks Stage 2 (NG-PON2) is based on Hybrid Time and Wavelength Division Multiplexing (TWDM)-Passive Optical Network (PON) architecture for extended reach, which consists of 3 sections, a Central office (CO), Optical Distribution Network (ODN) and Optical Network Unit (ONU)
The ODN consists of multiplexer/demultiplexer, circulator, bidirectional fiber and 1:8 power splitter and eight ONU Down Stream (DS) receiver and eight ONU US transmitters are present in this design
Summary
In today’s world we are bombarded with high performance networking system like laptops, smartphone, and their applications requiring more bandwidth like Internet of Things (IoT), remote medical services, cloud computing, file sharing, cloud storage, video and web conference, online audio and video streaming. This paper explains the analysis of the performance of TWDM-PON for different reach and wavelength variation in ONU by using NRZ and Pulse-amplitude modulation (PAM4) in intensity modulation and direct detection [3] In this paper they analyzed Manchester, Differential Phase Shift Keying (DPSK) and Differential Quadrature Phase Shift Keying (DQPSK) for different distances and different data rates. Demonstration of 100G-PON based on NRZ transmission using Germanium and Silicon Avalanche Photo detector (APD) proved sufficient power budget for high data rate transmission [10] In this paper they simulated asymmetrical Generation-passive Optical Network (XG-PON) for a upstream and downstream transmission using RZ and CSRZ. The paper investigates currently used modulation formats such as NRZ, RZ, CSRZ and DB in terms of BER, Q factor, optical reach and distance, they analyzed under polarization effects, dispersion and spectral efficiency [15]. Section explains the summary and discussion of the results obtained for different modulation formats used in NG-PON2 network
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