Fiber Bragg grating-based monitoring system for fiber to the home (FTTH) passive optical network

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Yousif I. Hammadi
Keyword(s):  
Optical Communication ◽  
Communication Systems ◽  
Fault Location ◽  
Optical Network ◽  
Central Office ◽  
Cost Effective ◽  
Passive Optical Network ◽  
Fiber To The Home ◽  
Reflected Power ◽  
The Cost

Abstract Fiber to the home (FTTH) passive optical network is one of the cost effective and effortlessly planning systems in the current era of communication systems. However, one of the substantial limitations of this optical communication network is the monitoring operation. It is essential to locate the fault branch in the network in order to take the required action to overcome the problem. Unfortunately, since the network is all passive, it is necessary to introduce a technique that should be passive and has the capacity to locate the fault location inside the network. In this paper, a methodology to localize the fault line was introduced, where a combination of Fiber Bragg Gratings was suggested, using this approach, the fault location can be easily determined among 36-branch, distributed in eight groups. Simulation results show that the broken line can be determined through monitoring the reflected signals from all the branches in the Central Office without paying any power to locate the leakage. In other words, it is easy to recognize the fault location by monitoring the power of the reflected signals, where after comprehensive simulations and power calculations, it was possible to put a threshold for that reflected power, hence, the fault branch, for any reason, may reflect power of less than that threshold, otherwise, the branch is not considered as broken.

scholarly journals A study on FTTH implementation and migration in Nepal

2021 ◽  
Vol 1 (1) ◽  
pp. 174-196
Author(s):  
Naba Raj Khatiwoda ◽  
Babu R Dawadi
Keyword(s):  
Bandwidth Allocation ◽  
High Speed ◽  
Optical Network ◽  
Cost Effective ◽  
Passive Optical Network ◽  
Implementation Challenges ◽  
Fiber To The Home ◽  
Fiber Technology ◽  
And Migration ◽  
Device Interaction

The increasing demand of high speed data results into extensive enhancement on different telecommunication technologies through wireline and wireless technologies. Optical Fiber technology is being popular for fixed broadband technologies and for backhaul network data for network convergence and media device interaction. Fiber to the home (FTTH) is gaining momentum of deployments in many countries all around the world. Passive optical network (PON) utilizes point to multipoint (P2MP) topology and is becoming suitable, cost effective, and promising solutions as compared to existing copper based telecommunication infrastructure. PON architecture is cheaper than other architectures due to dynamic bandwidth allocation and common resources that can be used by different subscribers and especially for home subscribers. This paper presents a study on the effective deployment of PON based FTTH network at Nepal by referring the deployment scenario of Nepal Telecom (NT), while this network design, deployment, and implementation provides a lesson learn for cost effective deployment of such network to other stakeholders of developing countries having similar territory and implementation challenges.

Broadband Optical Access using Centralized Carrier Distribution

2012 ◽  
pp. 1958-1977
Author(s):  
Chi-Wai Chow
Keyword(s):  
Optical Network ◽  
Cost Effective ◽  
Passive Optical Network ◽  
Carrier Distribution ◽  
Wavelength Division ◽  
Rayleigh Backscattering ◽  
Wavelength Division Multiplexed ◽  
Fiber To The Home ◽  
Beat Noise ◽  
Wdm Pon

Passive optical network (PON) is considered as an attractive fiber-to-the-home (FTTH) technology. Wavelength division multiplexed (WDM) PON improves the utilization of fiber bandwidth through the use of wavelength domain. A cost-effective solution in WDM PON would use the same components in each optical networking unit (ONU), which should thus be independent of the wavelength assigned by the network. Optical carriers are distributed from the head-end office to different ONUs to produce the upstream signals. Various solutions of colorless ONUs will be discussed. Although the carrier distributed WDM PONs have many attractive features, a key issue that needs to be addressed is how best to control the impairments that arise from optical beat noise induced by Rayleigh backscattering (RB). Different RB components will be analyzed and RB mitigation schemes will be presented. Finally, some novel PONs including signal remodulation PONs, long reach PONs and wireless/wired PONs will be highlighted.

Broadband Optical Access using Centralized Carrier Distribution

2010 ◽  
pp. 102-121
Author(s):  
Chi-Wai Chow
Keyword(s):  
Optical Network ◽  
Cost Effective ◽  
Passive Optical Network ◽  
Carrier Distribution ◽  
Wavelength Division ◽  
Rayleigh Backscattering ◽  
Wavelength Division Multiplexed ◽  
Fiber To The Home ◽  
Beat Noise ◽  
Wdm Pon

Passive optical network (PON) is considered as an attractive fiber-to-the-home (FTTH) technology. Wavelength division multiplexed (WDM) PON improves the utilization of fiber bandwidth through the use of wavelength domain. A cost-effective solution in WDM PON would use the same components in each optical networking unit (ONU), which should thus be independent of the wavelength assigned by the network. Optical carriers are distributed from the head-end office to different ONUs to produce the upstream signals. Various solutions of colorless ONUs will be discussed. Although the carrier distributed WDM PONs have many attractive features, a key issue that needs to be addressed is how best to control the impairments that arise from optical beat noise induced by Rayleigh backscattering (RB). Different RB components will be analyzed and RB mitigation schemes will be presented. Finally, some novel PONs including signal remodulation PONs, long reach PONs and wireless/wired PONs will be highlighted.

Comparative Analysis of High Speed 20/20 Gbps OTDM-PON, WDM-PON and TWDM-PON for Long-Reach NG-PON2

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
Meet Kumari ◽  
Reecha Sharma ◽  
Anu Sheetal
Keyword(s):  
Wavelength Division Multiplexing ◽  
High Speed ◽  
Optical Network ◽  
Access Network ◽  
Cost Effective ◽  
Input Power ◽  
Passive Optical Network ◽  
Wavelength Division ◽  
Transmission Distance ◽  
Wdm Pon

AbstractNowadays, bandwidth demand is enormously increasing, that causes the existing passive optical network (PON) to become the future optical access network. In this paper, next generation passive optical network 2 (NG-PON2) based, optical time division multiplexing passive optical network (OTDM-PON), wavelength division multiplexing passive optical network (WDM-PON) and time & wavelength division multiplexing passive optical network (TWDM-PON) systems with 20 Gbps (8 × 2.5 Gbps) downstream and 20 Gbps (8 × 2.5 Gbps) upstream capacity for eight optical network units has been proposed. The performance has been compared by varying the input power (−6 to 27 dBm) and transmission distance (10–130 km) in terms of Q-factor and optical received power in the presence of fiber noise and non-linearities. It has been observed that TWDM-PON outperforms OTDM-PON and WDM-PON for high input power and data rate (20/20 Gbps). Also, TWDM-PON shows its superiority for long-reach transmission up to 130 km, which is a cost-effective solution for future NG-PON2 applications.

Design of Optical Access Network Implementing DVB Business and IP Business

2011 ◽  
Vol 130-134 ◽  
pp. 741-744
Author(s):  
Wen Feng Sun ◽  
Yan Zhao Li
Keyword(s):  
Optical Network ◽  
Access Network ◽  
Passive Optical Network ◽  
Wireless Access ◽  
Access Technology ◽  
Optical Access ◽  
Optical Access Network ◽  
The Wire ◽  
The Cost

The paper illustrates the optical access network which includes AON (active optical network), PON (Passive optical network) and EOC (Ethernet over COAX) systems, implementing DVB business and IP business. The optimal optical access technology is selected according to different access situations in the project. The optical access network accomplishes the wire access and wireless access. In order to reduce the cost, the coax is efficiently used.

The cost-effective fault detection and fault location approach for communication channels in NoC

2017 ◽  
Vol 73 (11) ◽  
pp. 5034-5052 ◽  
Author(s):  
Babak Aghaei ◽  
Kambiz Badie ◽  
Ahmad Khademzadeh ◽  
Midia Reshadi
Keyword(s):  
Fault Detection ◽  
Fault Location ◽  
Communication Channels ◽  
Cost Effective ◽  
The Cost

Fiber-to-the-Home Services Based on Wavelength-Division-Multiplexing Passive Optical Network

2004 ◽  
Vol 22 (11) ◽  
pp. 2582-2591 ◽  
Author(s):  
S.-J. Park ◽  
C.-H. Lee ◽  
K.-T. Jeong ◽  
H.-J. Park ◽  
J.-G. Ahn ◽  
...  
Keyword(s):  
Wavelength Division Multiplexing ◽  
Optical Network ◽  
Passive Optical Network ◽  
Wavelength Division ◽  
Fiber To The Home
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