Minimizing the cost of an optical network

1998 ◽  
pp. 27-31
Author(s):  
Ornan (Ori) Gerstel
Keyword(s):  
Optical Network ◽  
The Cost

All-in-one silicon photonic polarization processor

Nanophotonics ◽  
2019 ◽  
Vol 8 (12) ◽  
pp. 2257-2267 ◽  
Author(s):  
Hailong Zhou ◽  
Yuhe Zhao ◽  
Yanxian Wei ◽  
Feng Li ◽  
Jianji Dong ◽  
...  
Keyword(s):  
Large Scale ◽  
Optical Network ◽  
Multiple Input Multiple Output ◽  
Building Blocks ◽  
Phase Shifters ◽  
Single Function ◽  
Gradient Descent Algorithm ◽  
Input Multiple Output ◽  
Polarization Functions ◽  
The Cost

AbstractWith the great developments in optical communication technology and large-scale optical integration technology, it is imperative to realize the traditional functions of polarization processing on an integration platform. Most of the existing polarization devices, such as polarization multiplexers/demultiplexers, polarization controllers, polarization analyzers, etc., perform only a single function. Definitely, integrating all these polarization functions on a chip will increase function flexibility and integration density and also cut the cost. In this article, we demonstrate an all-in-one chip-scale polarization processor based on a linear optical network. The polarization functions can be configured by tuning the array of phase shifters on the chip. We demonstrate multiple polarization processing functions, including those of a multiple-input-multiple-output polarization descrambler, polarization controller, and polarization analyzer, which are the basic building blocks of polarization processing. More functions can be realized by using an additional two-dimensional output grating. A numerical gradient descent algorithm is employed to self-configure and self-optimize these functions. Our demonstration suggests great potential for chip-scale, reconfigurable, and fully programmable photonic polarization processors with the artificial intelligence algorithm.

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.

scholarly journals Research on Generating and Visualizing Display Method of Power Optical Network Attack Path

1970 ◽  
Vol 1 (1) ◽  
Author(s):  
Li Wei Wei
Keyword(s):  
Electric Power ◽  
Optical Network ◽  
Visual Display ◽  
Power Network ◽  
Target Node ◽  
Network Attack ◽  
Network Nodes ◽  
Attack Path ◽  
Overall Performance ◽  
The Cost

When an intruder attacks an object in an electric power network, it is necessary to successfully invade the target node along an attack path. However, as the number of target power optical network nodes increases gradually, the attack path will be exponential growth, resulting in path redundancy, affecting the overall performance of the generated path. To this end, a new power optical network attack path generation and visual display method, introduced the atomic attack, attack map and attack path definition. Based on the analysis of the cost and benefit of the attack path, the intrusion feasibility model is proposed, and the intruder’s choice of the attack path becomes the problem of the feasibility of the invasion. When the POS set contains all the directional edges of the power optical network attack map, generate the attack path of the power optical network by traversing the POS collection element. The process of generating the attack path of the electric power network is displayed. The experimental results show that there is no redundant phenomenon in the proposed method, and the generated attack path is effective and the reliability is high.

Telecommunications Performance Monitoring and Unlimited Data

2017 ◽  
Vol 5 (1) ◽  
Author(s):  
Mark A Gregory
Keyword(s):  
Performance Monitoring ◽  
Business Models ◽  
Optical Network ◽  
Telecommunications Industry ◽  
Telecommunication Networks ◽  
Network Congestion ◽  
The Past ◽  
Broadband Network ◽  
Key Issues ◽  
The Cost

The Australian telecommunications industry has been slow to call for or to adopt new practices and the National Broadband Network has exacerbated the problem of technology adoption lag. There are two key issues facing telecommunication consumers today. The cost of optical networking has significantly reduced over the past five years so there is no justification for the network congestion that occurs on Australian telecommunication networks. To remedy this situation the introduction of performance monitoring is fully supported. It is time for the telecommunications industry to adopt new broadband business models that are based on the provision of unlimited data and a maximum of 90 to 95 per cent utilisation on optical network links.

Simulation Research on 40Gbit/s Hybrid WDM/TDM PON System

2014 ◽  
Vol 602-605 ◽  
pp. 3035-3038
Author(s):  
Jiang Nan Yang ◽  
Li Qun Huang ◽  
Xue Li Tang
Keyword(s):  
Semiconductor Optical Amplifier ◽  
High Speed ◽  
Optical Network ◽  
Optical Amplifier ◽  
Experimental Results ◽  
Passive Optical Network ◽  
Long Distance ◽  
Simulation Research ◽  
Wavelength Division ◽  
The Cost

Recently, wavelength division mulplexing (WDM) technology has been extensively studied, and various WDM-PON architectures have been proposed for next-generation passive optical network (PON). In this paper, we combine the TDM with WDM architecture to achieve high-speed, long-distance transmission. To reduce the cost of ONU, we achive the colorless ONU by placing a Reflective Semiconductor Optical Amplifier (RSOA) in the uplink transmission. We build the whole architecture to simulate the Hybrid WDM/TDM PON System in Optisystem and the experimental results prove that the architecture is feasible and reasonable.

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 Telecommunications Performance Monitoring and Unlimited Data

2017 ◽  
Vol 5 (1) ◽  
pp. ii-iv
Author(s):  
Mark A Gregory
Keyword(s):  
Performance Monitoring ◽  
Business Models ◽  
Optical Network ◽  
Telecommunications Industry ◽  
Telecommunication Networks ◽  
Network Congestion ◽  
The Past ◽  
Broadband Network ◽  
Key Issues ◽  
The Cost

The Australian telecommunications industry has been slow to call for or to adopt new practices and the National Broadband Network has exacerbated the problem of technology adoption lag. There are two key issues facing telecommunication consumers today. The cost of optical networking has significantly reduced over the past five years so there is no justification for the network congestion that occurs on Australian telecommunication networks. To remedy this situation the introduction of performance monitoring is fully supported. It is time for the telecommunications industry to adopt new broadband business models that are based on the provision of unlimited data and a maximum of 90 to 95 per cent utilisation on optical network links.

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