scholarly journals Deducing of Optical and Electronic Domains Based Distortions in Radio over Fiber Network

2022 ◽  
Vol 12 (2) ◽  
pp. 753
Author(s):  
Haoyu Yu ◽  
Farman Ali ◽  
Shanshan Tu ◽  
Hanen M. Karamti ◽  
Ammar Armghan ◽  
...  
Keyword(s):  
Communication Networks ◽  
Wavelength Division Multiplexing ◽  
Dispersion Compensation ◽  
Phase Error ◽  
Radio Over Fiber ◽  
Passive Optical Network ◽  
Full Duplex ◽  
Modulation Scheme ◽  
Radio Communication ◽  
Fiber Network

Managing the users multimedia and long-range based demands, the radio over fiber (RoF) mechanism has been introduced recently. RoF mingles the optical and radio communication frameworks to increase mobility and offer high capacity communication networks (CNs). In this paper, a full-duplex RoF-based CN is investigated for the next-generation passive optical network (PON), utilizing wavelength division multiplexing (WDM) technology. The desolations on account of optical and electronic domains (OEDs) are addressed, using dispersion compensation fiber (DCF) and optical and electrical filters, including modulation scheme. The analytical and simulation models are analyzed in terms of phase error (PE), radio frequency (RF), fiber length and input and received powers. The performance of the proposed model is successfully evaluated for 50 km range, −40 to −18 dBm received power, −20 to 0 dBm input power, where below 10−6 bit error rate (BER) is recorded. Thus, this signifies that the presented model exhibits smooth execution against OEDs impairments.

An Integrated High-Speed Full Duplex Coherent OFDM-PON and Visible-Light Communication System

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
Simarpreet Kaur ◽  
Mahendra Kumar ◽  
Ashu Verma
Keyword(s):  
Visible Light ◽  
Optical Networks ◽  
High Speed ◽  
Light Emitting Diode ◽  
Low Cost ◽  
Dispersion Compensation ◽  
Optical Network ◽  
Visible Light Communication ◽  
Passive Optical Network ◽  
Full Duplex

AbstractWe demonstrated a full duplex hybrid passive optical network and indoor optical wireless system employing coherent optical frequency division multiplexing. To accomplish reliable transmission in passive optical networks integrated visible-light communication (VLC), yellow light-emitting diode and infrared LED is used in downstream and upstream, respectively, for intra building network. In order to support high data rate, pulse-width reduction scheme based on dispersion compensation fiber is incorporated and system successfully covered the distance of 50 km. A data stream at the rate of 30 Gb/s is transmitted for each user out of eight users. VLC-supported users are catered with the bit rate of 1.87 Gb/s over 150 cm and in order to realize a low-cost system, visible and infrared LEDs are used in downlink and uplink, respectively.

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

2021 ◽  
Author(s):  
Meet Kumari ◽  
Anu Sheetal ◽  
Reecha Sharma
Keyword(s):  
Wavelength Division Multiplexing ◽  
Orthogonal Frequency Division Multiplexing ◽  
Transmission Rate ◽  
Optical Network ◽  
Passive Optical Network ◽  
Input Current ◽  
Full Duplex ◽  
Modulation Formats ◽  
Ofdm Modulation ◽  
The Impact

Abstract In this work, a full-duplex time and wavelength division multiplexing-passive optical network (TWDM-PON) system is analysed. Orthogonal frequency division multiplexing (OFDM) with m-quadrature amplitude modulation (m-QAM) is employed to improve the performance of TWDM-PON for downstream and upstream transmission. Simultaneously, multi-color (390–750 nm) laser diodes (LDs) are employed for visible light communication (VLC) using various VLC links to encourage the information rate of fiber/VLC optical network. A TWDM-PON utilizing 16-, 32- and 64-QAM OFDM with ten LDs based VLC system has been analysed for full-duplex multi-color VLC signals of the system. The impact of the LDs input current and high transmission rate in the proposed PON/VLC link has been investigated for m-QAM OFDM modulation. The results show that the 40/40 Gbps 16-, 32- and 64-QAM signals over ten 8000 m VLC links and a 50 km fiber link are successfully transmitted at the modulation input current of 9 mA under bit error rate (BER) of 3.8×10− 3. Also, the proposed system employing 16-, 32- and 64-QAM signals over a 10 km fiber and ten 10 m VLC links provide the maximum transmission rate of 120, 100 and 80 Gbps respectively. Moreover, the measured error vector magnitudes (EVMs) and calculated BER values for 16-QAM downstream and upstream signals, are well below the required FEC limit than high-order modulation formats. Further, the numerical analysis of the proposed system reveals the superiority of the proposed fiber/VLC links.

Performance Enhancement of Multichannel Gigabit Rate Bidirectional WDM-PON Using RSOA and Optimized Modulation Format

2016 ◽  
Vol 37 (3) ◽  
Author(s):  
Sooraj Parkash ◽  
Anurag Sharma ◽  
Harsukhpreet Singh
Keyword(s):  
Wavelength Division Multiplexing ◽  
Performance Enhancement ◽  
Dispersion Compensation ◽  
Optical Network ◽  
Optical Amplifier ◽  
Data Rate ◽  
Passive Optical Network ◽  
Optical Source ◽  
Modulation Format ◽  
Wdm Pon

AbstractThis paper successfully demonstrates bidirectional wavelength division multiplexing passive optical network (WDM-PON) system for 32 channels, 0.8 nm (100 GHz) channels spacing with 3.5 GHz filter bandwidth. The system delivers 160 GB/s data rate and 80 GB/s data rate in downstream and upstream, respectively. The optical source for downstream data and upstream data is mode-locked laser at central office and reflective semiconductor optical amplifier (RSOA) at optical network unit. The maximum reach of designed system is 50 km without using any dispersion compensation scheme. This paper comprises comparison of series of modulation format in downstream and upstream such as SOLITON, NRZ, RZ, MANCHESTER, CSRZ and CRZ-DPSK and optimization of the performance of designed system. It has been observed that CRZ-DPSK/NRZ gives best performance in downstream and upstream transmission for designed system. The simulation work report of minimum BER is e

RSOA-Based Full-Duplex WDM-PON for 20 Gbps Transmission in Two Channels Over a Long-Haul SMF Using External Modulation Scheme

2015 ◽  
Vol 36 (3) ◽  
Author(s):  
Anindya Sundar Das ◽  
Ardhendu Sekhar Patra
Keyword(s):  
Optical Network ◽  
Single Mode ◽  
Optical Amplifier ◽  
Single Mode Fiber ◽  
Passive Optical Network ◽  
Full Duplex ◽  
Modulation Scheme ◽  
Wavelength Division ◽  
External Modulation ◽  
Wdm Pon

AbstractWe have proposed and demonstrated a full-duplex wavelength division multiplexed passive optical network (WDM-PON) configuration based on reflective semiconductor optical amplifier (RSOA). RSOA is used for reusing and remodulate the downlink signal in the uplink. We have used external modulation scheme for transmitting 20 Gbps data rates in two channels over a 40 km single mode fiber (SMF). The uplink and the downlink performances are checked by the bit error rate (BER) and the eye diagrams.

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