Informatics Publishing Limited

R. Sagar ¹, Punita Verma ¹, Hariom Verma ¹, Dharmendra K. Singh ¹, Preeti Verma ¹

Affiliations
1 Department of Botany, Banaras Hindu University, Varanasi 221 005, IN

Abstract

No Abstract.

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Rajeshwar Singh ¹, Dharmendra K. Singh ², Lalan Kumar ³

Affiliations
1 Department of Electronics and Communication Engineering, Gateway Institute of Engineering and Technology, Sonipat, Haryana-131001, IN
2 Department of Electronics and Communication Engineering, BIT Sindri, Dhanbad, Jharkhand, IN
3 IT Centre, Central Institute of Mining and Fuel Research (CIMFR), Dhanbad, Jharkhand, IN

Abstract

A Wireless ad hoc network is a collection of autonomous mobile nodes that communicate with each other over wireless links without any fixed infrastructure. The nodes use the service of other nodes in the network to transmit packets to destinations that are out of their range. Such networks are expected to play increasingly important role in future organizations, University, Civilian and Military settings, being useful for providing communication support where no fixed infrastructure exists. Also, in case of disaster or natural calamities, the deployment of a fixed infrastructure is neither feasible nor economically profitable for establishing communication among the rescue members. In order to accomplish this, a number of ad-hoc routing protocols have been proposed and implemented, which include dynamic source routing (DSR) and Destination sequenced Distance Vector (DSDV) routing protocols. In this paper for experimental evaluation purposes, we have considered 500m x 500m, terrain area which illustrates the performance in terms of the packet delivery fraction and throughput for DSR and DSDV routing protocols. Our simulation results using NS-2 shows that DSR performs better in both the case of packet delivery fraction and throughput over DSDV routing protocol.

Keywords

DSDV, DSR, Packet Delivery Fraction, Throughput.

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Sandhir K. Singh ¹, Dharmendra K. Singh ², P. Mahto ³

Affiliations
1 Deptt. of Physics, VBU, Hazaribag, IN
2 Deptt. of Electronics & Comm. Engg., BIT, Sindri, Dhanbad-828123, IN
3 Deptt. of Physics, Vinoba Bhave University, Hazaribag, IN

Abstract

A photonic crystal fiber (PCF) presents a new way to guide light. The air holes in the fiber work as a cladding, but provide much more flexibility in the design. In this work, the plane-wave expansion technique for generating and analyzing photonic band structures is used. The simple 2D XY array with a hexagonal cross-sectional pattern of air holes in a silicon fiber is analysed for calculating parameters such as mode effective index, dispersion and single mode operation over wide wavelength range. The results of a design sample presented in this article, showing the better result to analyze this new class of fiber. This fiber can be used for biomedical application, spectroscopy, and super continuum generation.

Keywords

Dispersion, Photonic Band Gap (PBG), Photonic Crystal Fiber (PCF), Single Mode.

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