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Laser Optics & Photonics and Atomic & Plasma Science 2018
J u l y 1 6 - 1 7 , 2 0 1 8
P r a g u e , C z e c h R e p u b l i c
Page 78
American Journal of Computer Science and Information Technology
ISSN: 2349-3917
E u r o S c i C o n J o i n t E v e n t o n
Laser Optics & Photonics and
Atomic & Plasma Science
P
hotonic crystal fibers (PCFs) have a structure of wavelength-scale morphological microstructures running along its length.
In recent years, photonic crystal fiber (PCF) has attracted significant interest because of its unusual properties and extended
applications in telecommunications as well as in novel photonic devices such as sensors, medical instrumentation, and many
kinds of optical components. All these applications depend on the structure and geometrical parameters like lattice pitch, air hole
shape and diameter and type of lattice. By manipulating these parameters, we can design fibers for different desired applications.
In this paper, we analyses the effect of doubling the air hole diameter and pitch of hexagonal PCF (H-PCF) structures. Here, we
have performed numerical analysis using finite element method to calculate the dependence of the PCF parameters towards
the propagation characteristics like effective mode area, confinement loss, nonlinear coefficient, numerical aperture, spot size
and zero dispersion shifting over 800–2000 nm wavelength range. We found that by doubling the value of air hole diameter of
an H-PCF, we can increase the nonlinearity by an amount of 80-90% and reduce the confinement loss by 100%. These structures
can be used for highly nonlinear applications like super continuum generation in their zero dispersion wavelengths. By doubling
the value of pitch of a given symmetric H-PCF structure, large mode area H-PCF of effective area around 600 times more than its
original value with an increase in confinement loss by a factor of 800 can be designed. But, doubling both the air hole diameter
and pitch of the given symmetric H-PCF structure keeping the AFF constant, results in an increase in the effective mode area of
the structure with the decrease of the confinement loss. This consideration can be used for the construction of low loss LMA PCF.
dhanukrishnag@gmail.comEffect of geometrical parameters on the light
propagation characteristics of hexagonal
photonic crystal fibers
Dhanu Krishna G
1
, Prasannan G
2
, V P Mahadevan Pillai
3
and K G
Gopchandran
4
University of Kerala, India
Am J Compt Sci Inform Technol 2018, Volume 6
DOI: 10.21767/2349-3917-C1-003