Minimization of Nonlinear Impairments and Its Impact on Transmission Performances of High-Capacity Long-Haul Optical Networks

2018 ◽  
Vol 0 (0) ◽  
Author(s):  
Farman Ali ◽  
Yousaf Khan ◽  
Amjad Ali ◽  
Gulzar Ahmad
Keyword(s):  
Optical Networks ◽  
Communication Networks ◽  
Signal To Noise Ratio ◽  
Optical Network ◽  
High Capacity ◽  
Optical Fiber Communication ◽  
Effective Area ◽  
High Demand ◽  
Fiber Communication ◽  
Nonlinear Impairments

AbstractHigh-capacity and long-haul transmission gained great significance in modern communication networks. Optical fiber communication system is good enough to face the high demand of current telecom terrific. This paper will propound the theoretical model showing nonlinear factors which degrade the transmission performances of high-capacity long-haul network. The postulatory model will be validated using simulation of key nonlinear factors such as effective area, launch power, refractive index and fiber length. The transmission performance of the high-capacity long-haul optical network would be analyzed on the basis of some key parameters such as bit error rate and signal-to-noise ratio. Mitigation of nonlinear impairments shows significant impact on transmission performances of high-capacity long-haul optical networks.

Study of Fiber Bragg Grating Sensor in Dam Safety Monitoring

2013 ◽  
Vol 312 ◽  
pp. 736-740 ◽  
Author(s):  
Ying Xiang Luo
Keyword(s):  
Fiber Bragg Grating ◽  
High Speed ◽  
Optical Network ◽  
High Capacity ◽  
Safety Monitoring ◽  
Optical Fiber Communication ◽  
Bragg Grating ◽  
Dam Safety ◽  
Fiber Communication ◽  
Dam Safety Monitoring

As Optical fiber communication technology is developing towards high-speed and high-capacity, continual evolution to the all-optical network. In the lead of the mushroom development of Optical communication, Fiber Bragg Grating (FBG) is become one of the most mushroom optical passive components. This article will discuss about application of Fiber Bragg grating (FBG) sensor in dam safety monitoring, to improve the management and maintenance of dam.

Design of Optical Fiber Communication Networks for Feeder Automation

2013 ◽  
Vol 336-338 ◽  
pp. 1823-1826
Author(s):  
Zhong Wei Sun
Keyword(s):  
Communication Network ◽  
Optical Fiber ◽  
Optical Networks ◽  
Communication Networks ◽  
Communication Technologies ◽  
Optical Fiber Communication ◽  
Functional Requirements ◽  
Feeder Automation ◽  
Fiber Communication ◽  
Design Aspect

This paper focuses on design aspect of communication network for feeder automation applications. First, the business functional requirements of feeder automation and the supporting communication technologies are reviewed. Then, based on typical loop sectionalizing feeder connecting scheme, the communication infrastructure using Ethernet Passive Optical Networks (EPONs) is presented, and the redundant PON architecture is adopted.

Wavelength Division Multiplexed Passive Optical Networks

2010 ◽  
pp. 68-101
Author(s):  
Calvin C.K. Chan
Keyword(s):  
Optical Networks ◽  
Large Scale ◽  
Driving Forces ◽  
Optical Network ◽  
Access Network ◽  
High Capacity ◽  
Next Generation ◽  
Wavelength Division ◽  
Wavelength Division Multiplexed ◽  
Capacity Data

Wavelength division multiplexed passive optical network has emerged as a promising solution to support a robust and large-scale next generation optical access network. It offers high-capacity data delivery and flexible bandwidth provisioning to all subscribers, so as to meet the ever-increasing bandwidth requirements as well as the quality of service requirements of the next generation broadband access networks. The maturity and reduced cost of the WDM components available in the market are also among the major driving forces to enhance the feasibility and practicality of commercial deployment. In this chapter, the author will provide a comprehensive discussion on the basic principles and network architectures for WDM-PONs, as well as their various enabling technologies. Different feasible approaches to support the two-way transmission will be discussed. It is believed that WDM-PON is an attractive solution to realize fiber-to-the-home (FTTH) applications.

scholarly journals Recent Advances in DSP Techniques for Mode Division Multiplexing Optical Networks with MIMO Equalization: A Review

2019 ◽  
Vol 9 (6) ◽  
pp. 1178 ◽  
Author(s):  
Yi Weng ◽  
Junyi Wang ◽  
Zhongqi Pan
Keyword(s):  
Optical Networks ◽  
Communication Networks ◽  
Chromatic Dispersion ◽  
High Capacity ◽  
Digital Signal ◽  
Recursive Least Squares ◽  
Hardware Complexity ◽  
Mode Division Multiplexing ◽  
Comparable Performance ◽  
Optic Communication

This paper provides a technical review regarding the latest progress on multi-input multi-output (MIMO) digital signal processing (DSP) equalization techniques for high-capacity fiber-optic communication networks. Space division multiplexing (SDM) technology was initially developed to improve the demanding capacity of optic-interconnect links through mode-division multiplexing (MDM) using few-mode fibers (FMF), or core-multiplexing exploiting multicore fibers (MCF). Primarily, adaptive MIMO filtering techniques were proposed to de-multiplex the signals upon different modes or cores, and to dynamically compensate for the differential mode group delays (DMGD) plus mode-dependent loss (MDL) via DSP. Particularly, the frequency-domain equalization (FDE) techniques suggestively lessen the algorithmic complexity, compared with time-domain equalization (TDE), while holding comparable performance, amongst which the least mean squares (LMS) and recursive least squares (RLS) algorithms are most ubiquitous and, hence, extensively premeditated. In this paper, we not only enclose the state of the art of MIMO equalizers, predominantly focusing on the advantage of implementing the space–time block-coding (STBC)-assisted MIMO technique, but we also cover the performance evaluation for different MIMO-FDE schemes of DMGD and MDL for adaptive coherent receivers. Moreover, the hardware complexity optimization for MIMO-DSP is discussed, and a joint-compensation scheme is deliberated for chromatic dispersion (CD) and DMGD, along with a number of recent experimental demonstrations using MIMO-DSP.

Complete suppression of FWM in ultra dense WDM-PON optical networks using centralized light source

2015 ◽  
Vol 24 (04) ◽  
pp. 1550053 ◽  
Author(s):  
Habib Ullah Manzoor ◽  
Ashiq Hussain ◽  
Chong Xiu Yu ◽  
Tareq Manzoor
Keyword(s):  
Optical Networks ◽  
Light Source ◽  
Signal To Noise Ratio ◽  
Optical Network ◽  
Optical Signal ◽  
Complete Suppression ◽  
Left Hand ◽  
Circular Polarizer ◽  
Received Power ◽  
Dense Wdm

In this paper, a novel technique to completely eliminate FWM has been introduced. Alternative circular polarizer have been used to change the polarization of incoming pulses into left-hand and right-hand polarizations before multiplexing in UDWDM optical network with centralized light source. System’s performance have been calculated on the bases of Q factor, optical signal to noise ratio, received power and bit error rate. All simulation has been performed in OptiSystem.

Modelling and Simulation Analysis of Routing Algorithms in Multichannel Optical Communication Networks

2021 ◽  
Vol 1 (1) ◽  
pp. 29-33
Author(s):  
K. Angelov ◽  
S. Sadinov
Keyword(s):  
Optical Networks ◽  
Communication Networks ◽  
Optical Communication ◽  
Simulation Analysis ◽  
Blocking Probability ◽  
Optical Network ◽  
Optimal Path ◽  
Routing Algorithms ◽  
Weight Functions ◽  
Circuit Switching

In this paper, it is considered the broadband backbone optical networks with wavelength routing and circuit switching used to build long-range wide area networks. In this type of network, if there is an available and acknowledged connection request, it is necessary to determine the optimal path between the optical communication nodes in the network. This also requires the assignment of an optimal set of wavelengths along the selected route between these nodes. This paper takes into account the multichannel optical communication networks with spectral multiplexing. Four different routing algorithms are modeled and analyzed for which their weight functions are determined to take into account various factors, such as the total distance of the individual routes, the total number of available wavelengths for a given route and how many of them are available for use. It is studied and compared the performance of the proposed algorithms in a multichannel optical network in terms of blocking probability.

Probing of nonlinear impairments in long range optical transmission systems

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Farman Ali ◽  
Muhammad Shakeel ◽  
Asar Ali ◽  
Wajid Shah ◽  
Muhammad Salman Qamar ◽  
...  
Keyword(s):  
Communication Networks ◽  
Optical Communication ◽  
Communication Systems ◽  
Nonlinear Effects ◽  
Effective Area ◽  
Optical Signal ◽  
Linear Dispersion ◽  
Optical Communication Systems ◽  
The Impact ◽  
Nonlinear Impairments

Abstract Optical communication systems represent the backbone of modern long-haul communication networks. Nonlinear impairments such as the Kerr effect pose threat and deteriorate transmission in long-haul optical communication systems. At high launch powers, nonlinear effects become more important and their compensation is entailed to improve the transmission performance. In this paper, one of the major nonlinear effects of four waves mixing (FWM) is addressed using a theoretical model and validated through simulation in Optisystem. Two mechanisms with and without dispersion variation are investigated. The impact of FWM is investigated in terms of various values of launch power. The transmission performances of the proposed model are evaluated on the basis of bit error rate, optical signal to noise ratio, and quality factor using key parameters of effective area, nonlinear refractive index, nonlinear dispersion, and linear dispersion.

Robust Design and Management of Optical Networks

2011 ◽  
pp. 195-226 ◽  
Author(s):  
Hussein T. Mouftah ◽  
Burak Kantarci
Keyword(s):  
Optical Networks ◽  
Optical Network ◽  
High Capacity ◽  
Design Constraint ◽  
Service Interruption ◽  
Optical Network Design ◽  
Huge Data ◽  
Time Availability ◽  
Reliable Design ◽  
Short Time

High capacity advantage of optical networks also introduces the risk of huge data loss in case of a service interruption, even if the outage lasts a short time. Therefore, survivable and reliable design and management of optical networks is urgent. However, deployment of efficient survivability policies does not always guarantee the continuity of the service. Long failure restoration delays, multiple failures, and lack of protection resources may lead to service unavailability. Hence, connection availability arises as a design constraint, and it is defined as the probability of a connection being in the operating state at any time. Availability-constrained optical network design and availability-constrained connection provisioning are two important problems to guarantee robustness of connections in a survivable network.

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