International Journal of Advanced Networking and Applications

Ahmed Nabih Zaki Rashed ¹

Affiliations
1 Electronics and Electrical Communications Engineering Department, Menouf 32951, Menoufia University, EG

Abstract

Optical technologies are ubiquitous in telecommunications networks and systems, providing multiple wavelength channels of transport at 2.5 Gbit/sec to 40 Gbit/sec data rates over single fiber optic cables. Market pressures continue to drive the number of wavelength channels per fiber and the data rate per channel. This trend will continue for many years to come as electronic commerce grows and enterprises demand higher and reliable bandwidth over long distances. Electronic commerce, in turn, is driving the growth curves for single processor and multiprocessor performance in data base transaction and Web based servers. Ironically, the insatiable taste for enterprise network bandwidth, which has driven up the volume and pushed down the price of optical components for telecommunications is simultaneously stressing computer system bandwidth increasing the need for new interconnection schemes and providing for the first time commercial opportunities for optical components in computer systems. The evolution of integrated circuit technology is causing system designs to move towards communication based architectures. We have presented the current tends of high performance system capacity of optical interconnection data transmission link in high performance optical communication and computing systems over wide range of the affecting parameters.

Keywords

Optical Fiber Link, High Speed Optical Interconnection, Integrated Optics, Optical Source, Optical Detector.

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Ahmed Nabih Zaki Rashed ¹

Affiliations
1 Electronics and Electrical Communications Engineering Department, Menouf 32951, Menoufia University, EG

Abstract

The explosive bandwidth needs, especially in the inter data center market, have pushed transmission data rates to 100 Gbit/sec and beyond. Current terrestrial fibers are inadequate for long haul, high bandwidth deployments. To solve these problems a new fiber is introduced for terrestrial high bandwidth deployments: different polymeric core fibers with enlarged effective area with a significant optical signal to noise ratio improvement over other conventional terrestrial single mode fibers. To ensure the new fiber may be deployed robustly a new coating structure was employed. A rigorous cable structure was then chosen for evaluation. Based on experimental data, both the deep ocean water temperature and pressure are tailored as functions of the water depth. As well as the product of the transmitted bit rate and the repeater spacing is processed over wide ranges of the affecting parameters. It is taken into account the estimation of the total cost of the submarine fiber cable system for transmission technique under considerations. The system capacity as well as the spectral losses, and the dispersion effects are parametrically investigated over wide range ranges of the set of affecting parameters {wavelength, ocean depth (and consequently the ocean pressure and temperature), and the chemical structure}.

Keywords

Polymeric Cable Material, Giga Bit Applications, Explosive Bandwidth, Effective Area, and Global Communications.

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Abd El-Naser A. Mohamed ¹, Ahmed Nabih Zaki Rashed ¹, Mahmoud M. A. Eid ¹

Affiliations
1 Electronics and Electrical Communications Engineering Department, Menoufia University, Menouf-32951, EG

Abstract

In the present paper, we have proposed a thermal planar arrayed waveguide grating (AWG) module for dense wavelength division multiplexing (DWDM) which is composed of one of the following material as a core such as Pure silica glass (SiO₂), Lithium niobate (LiNbO3), and gallium aluminum arsenide (Ga_{(1- x)}Al_(x)As)/Polyhexafluoro isopropyl 2-fluoroacrylate dibutyl phathalate (PHFIP 2-FA-DBP) used as over cladding material/Polyhexafluoro isopropyl 2-fluoroacrylate (PHFIP 2-FA) used as under cladding material, hybrid materials on a silicon substrate has parametrically investigated over wide range of the affecting parameters. multiplexing technique is processed where multi channels in ultra dense wavelength division multiplexing in a thermal AWG module. We have theoretically investigated the temperature dependent wavelength shift of the AWG depends on the refractive indices of the materials and the size of the waveguide. A thermalization of the AWG can be realized by selecting proper values of the material and structural parameters of the device. We have taken into account the increased number of transmitted channels within DWDM technique over a thermal planar AWG of hybrid materials. The thermal effects of different hybrid materials employed in the fabrication of AWG are studied deeply and parametrically for the good performance of such AWG.

Keywords

A Thermal AWG, Planar Waveguide, UW-DWDM, UW-SDM, PHFIP 2-FA, PHFIP 2-FA-DBP, Hybrid Materials.

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Abd El-Naser A. Mohamed ¹, Ahmed Nabih Zaki Rashed ¹, Mohamed S. F. Tabbour ¹

Affiliations
1 Electronics and Electrical Communications Engineering Department, Menoufia University, Menouf-32951, EG

Abstract

In the present paper, we have proposed Radio over fiber (ROF) technology which allows radio frequency (RF) transmission directly over the optical fiber has attracted much attention due to its promising performance and operational cost reduction. The well known advantages of optical fiber as a transmission medium such as low loss, light weight, large bandwidth characteristics, small size and low cable cost make it the ideal and most flexible solution for efficiently transporting radio signals. We have presented and modeled with parametrical investigation the transmission performance characteristics of the ROF system that is modulated with multiple bit rates using different transmission techniques such as Soliton, and maximum time division multiplexing (MTDM) technique. These transmission techniques are employed through two ultra multiplexing techniques, 4 links space division multiplexing (SDM) plus multi channels dense wavelength division multiplexing (DWDM) over optical window of special interest. Moreover, we have analyzed and investigated Soliton, and MTDM transmission techniques to be processed to handle both transmission bit rate and product either per link or per channel for cables of multi-links (4-24 links/core).

Keywords

Fiber Radio Networks, Wavelength Division Multiplexing (DWDM), Space Division Multiplexing (SDM), Radio Over Fiber (ROF), Hybrid Fiber Radio Systems.

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