Table of Contents
ISRN Optics
Volume 2013, Article ID 416537, 5 pages
Research Article

A Modified Structure for All-Glass Photonic Bandgap Fibers: Dispersion Characteristics and Confinement Loss Analysis

1Department of Electronics & Electrical Communication Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India
2School of Electrical Sciences, Indian Institute of Technology Bhubaneswar, Bhubaneswar, Odisha 751013, India

Received 7 June 2013; Accepted 2 July 2013

Academic Editors: Y. S. Kivshar and S. R. Restaino

Copyright © 2013 Sanjaykumar Gowre et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This paper investigates a modified structure for all-glass photonic bandgap fiber (AGPBF) having up-doped silica rods in the cladding region instead of air holes using plane wave expansion (PWE) and finite difference time domain (FDTD) methods. The proposed AGPBF structure exhibits tunable dispersion properties and improved confinement loss. It is observed that the confinement loss can be reduced simply by using a higher doping concentration in silica rods in the cladding. Also, it is possible to achieve flattened dispersion of the order of 1 ps/nm/km over a wide wavelength range.