A minimum channel spacing of optical wavelength-division-multiplexing transsion for subscriber loop systems

1986 ◽  
Vol 69 (9) ◽  
pp. 55-64
Author(s):  
Koichi Sano ◽  
Ryuichi Watanabe
Keyword(s):  
Wavelength Division Multiplexing ◽  
Channel Spacing ◽  
Wavelength Division ◽  
Optical Wavelength

Performance enhancement of Raman + EYDFA HOA for UD-WDM system applications

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Anurupa Lubana ◽  
Sanmukh Kaur ◽  
Yugnanda Malhotra
Keyword(s):  
Wavelength Division Multiplexing ◽  
Performance Enhancement ◽  
Optical Amplifier ◽  
Q Factor ◽  
Channel Spacing ◽  
Average Gain ◽  
Wavelength Division ◽  
System Parameters ◽  
Gain Variation ◽  
Hybrid Optical Amplifier

AbstractIn this work, we study and analyze the performance of Raman + Erbium-Ytterbium codoped fiber hybrid optical amplifier (HOA) for an ultradense wavelength division multiplexing (UD-WDM) system having 100 channels. The system has been investigated considering initial values of channel spacing and data rate of 0.1 nm (12.5 GHz) and 100 GB/s, respectively. Initially, the two important WDM system parameters—wavelength and channel spacing—have been selected and then optimization of the proposed HOA has been performed in terms of EYDFA length, pump power and Er+ concentration to achieve higher values of average gain, Q-factor and lower gain variation ratio. The optimized configuration of the HOA results in the achievement of higher value of average gain, Q-factor and gain variation ratio of 47 dB, 14 and 0.14, respectively, which confirms its viability for UD-WDM system applications.

Investigation and optimization of EYDFA + Raman + EYDFA hybrid optical amplifier for SD-WDM systems in C+L band

2021 ◽  
pp. 2150006
Author(s):  
Anurupa Lubana ◽  
Sanmukh Kaur
Keyword(s):  
Wavelength Division Multiplexing ◽  
Signal To Noise Ratio ◽  
Fiber Amplifier ◽  
Optical Amplifier ◽  
Optical Signal ◽  
Channel Spacing ◽  
Channel System ◽  
Wavelength Division ◽  
Gain Variation ◽  
Hybrid Optical Amplifier

In this paper, we present a novel erbium–ytterbium doped fiber amplifier (EYDFA) + Raman + EYDFA hybrid optical amplifier (HOA) for a super-dense wavelength division multiplexing (SD-WDM) system application. The performance of the 100-channel system has been investigated for an overall data rate and channel spacing of 100[Formula: see text]Gb/s and 0.4[Formula: see text]nm, respectively, over a wavelength span of 1550–1589.9[Formula: see text]nm. HOA has been optimized for Raman length, EYDFA lengths, pump powers and Er[Formula: see text] concentrations to achieve high average gain and low gain variation ratio of 40.41[Formula: see text]dB and 0.40[Formula: see text]respectively. The optimized configuration of the proposed HOA has been compared with EYDFA + Raman and Raman + EYDFA HOA configurations. The achieved high and flat gain with an acceptable output optical signal to noise ratio (OSNR) in case of EYDFA + Raman + EYDFA HOA; makes it an optimum choice for SD-WDM systems.

DWDM Channel Spacing Effects on the Signal Quality for DWDM/CWDM FTTx Network

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
K. Vinoth Kumar ◽  
P. Venkatesh Kumar ◽  
Ahmed Nabih Zaki Rashed ◽  
Abd El–Naser A. Mohamed ◽  
Mohamed S. Tabbour ◽  
...  
Keyword(s):  
Wavelength Division Multiplexing ◽  
Chromatic Dispersion ◽  
Network Capacity ◽  
The Other ◽  
Signal Quality ◽  
Dense Wavelength Division Multiplexing ◽  
Channel Spacing ◽  
Wavelength Division ◽  
Spacing Effects ◽  
Coarse Wavelength Division Multiplexing

AbstractIn this paper, two models of fiber-to-the-x (FTTx) networks are provided, one of hybrid dense wavelength division multiplexing/coarse wavelength division multiplexing (DWDM/CWDM) with high subscriber’s allocated bandwidth, and the other of hybrid ultra-dense wavelength division multiplexing/coarse wavelength division multiplexing (UDWDM/CWDM) with high network capacity. The effect of the fiber chromatic dispersion on the signal quality was demonstrated. The behavior of the network with respect to the changing of the DWDM channel spacing and the relation between the channel spacing and the system bit rate was discussed.

Performance Optimization of 45-Channel Superdense Wavelength-Division-Multiplexed (SDWDM) Optical Add–Drop Multiplexer (OADM) Ring Network

2015 ◽  
Vol 36 (2) ◽  
Author(s):  
Vikrant Sharma ◽  
Anurag Sharma ◽  
Dalvir Kaur
Keyword(s):  
Wavelength Division Multiplexing ◽  
Performance Optimization ◽  
High Speed ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Ring Network ◽  
Channel Spacing ◽  
Modulation Formats ◽  
Eye Diagram ◽  
Wavelength Division

AbstractIn this paper, performance analysis of high-speed superdense wavelength-division-multiplexing (SDWDM) optical add–drop multiplexer (OADM) optical ring network for 6 nodes, 45 wavelengths having channel spacing of 0.2 nm on 300 km unidirectional nonlinear single-mode fiber ring of 10 Gbit/s has been reported. The performance optimization of the system by comparing different modulation formats has been reported on the basis of eye diagram and bit error rate (BER). It has been reported that CSRZ modulation format can achieve BER as better as e-24, which gives best performance. This paper also presents a study of performance degradation caused by the crosstalk and the effect of channel spacing on SWDM system.

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