Abstract
The purpose of this paper is to design a hexagonal microstructure photonic crystal fiber (PCF) which gives ultra-high birefringence and very low confinement loss for sensing application. To characterize the modal properties of the proposed photonic crystal fiber, finite element method is used. We found ultra-high birefringence of 3.34×10-2 at operating wavelength 1550nm by using simulation software comsol multiphysics. Our proposed PCF gives large value of nonlinear coefficient of 63.51 W-1km-1, large value of negative dispersion coefficient of -566.6 ps/ (nm.km), and also ultra-low confinement loss which is in the order of 10-7.
Highlights
Nowadays the researchers are very interested in photonic crystal fibers (PCFs) because of their remarkable characteristics such as large nonlinearity, high birefringence and large negative value of dispersion, because its design parameter is flexible than ordinary optical fiber
The diameters of air holes of three rings are equal expressed by d1 in the proposed PCF which consists of five rings
During fabrication ± 1% variation in global diameters may be occurred in PCF [21]
Summary
Nowadays the researchers are very interested in photonic crystal fibers (PCFs) because of their remarkable characteristics such as large nonlinearity, high birefringence and large negative value of dispersion, because its design parameter is flexible than ordinary optical fiber. For the application of sensing and high bit rate communication system lots of research paper are published [1,2,3,4,5,6,7,8,9,10,11]. Birefringence is one of the most interesting characteristics among the features of PCFs. By getting large index difference and flexible photonic crystal fibers design high birefringence can establish. Different types of air hole arrangement in the core as well as cladding are presented for achieving ultra- high birefringence. A high birefringence of 1.83×10-2, by using the http://www.ijoest.com ©International Journal of Engineering Science Technologies [9]
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