CHAPTER 4

Photonic Bandgap–Guided Bragg Fibers

Sonali Dasgupta

Bishnu P. Pal*

M.R. Shenoy,     Department of Physics, Indian Institute of Technology Delhi, New Delhi, India

1 INTRODUCTION

Consequent to the mind-boggling progress in high-speed optical telecommunications witnessed in recent times, it appeared that it would only be a matter of time before the huge theoretical bandwidth of 53 THz offered by low-loss transmission windows (extending from 1280 nm [235 THz] to 1650 nm [182 THz]) in OH -free high-silica optical fibers would be tapped for telecommunication through dense wavelength division multiplexing techniques! In spite of this possibility, there has been a considerable resurgence of interest among researchers to develop specialty ...

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