High-resolution refractive index sensing using solid-core photonic crystal fibers with high index infiltrations

AbstractThis study has deeply investigated the basic equations analysis of dispersion and loss in photonic crystal fibers (PCF) within the operating wavelengths of 850, 1,300, and 1,550 nm. The confinement loss, effective refractive index, and effective cross-section area of PCF are also studied. The variations of total dispersion and losses against hole diameter and distance between holes variations in PCF are clarified. Confinement loss, effective refractive index, and effective cross-section area variations for PCF are sketches with the variations of the operating wavelength.

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Supercontinuum generation in helically twisted photonic crystal fibers with a solid core

Laser Physics ◽

10.1088/1555-6611/ab43d8 ◽

2019 ◽

Vol 29 (11) ◽

pp. 115102

Author(s):

Vu Tran Quoc ◽

Doan Quoc Khoa ◽

Bien Chu Van ◽

Hieu Le Van

Keyword(s):

Photonic Crystal ◽

Photonic Crystal Fibers ◽

Supercontinuum Generation ◽

Solid Core ◽

Crystal Fibers

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Nonlinear effects in photonic crystal fibers filled with nematic liquid crystals

Open Physics ◽

10.2478/s11534-008-0096-z ◽

2008 ◽

Vol 6 (3) ◽

Cited By ~ 2

Author(s):

Urszula Laudyn ◽

Katarzyna Rutkowska ◽

Robert Rutkowski ◽

Mirosław Karpierz ◽

Tomasz Woliński ◽

...

Keyword(s):

Refractive Index ◽

Liquid Crystals ◽

Photonic Crystal ◽

Low Power ◽

Light Beam ◽

Photonic Crystal Fibers ◽

Nematic Liquid Crystals ◽

Nonlinear Effects ◽

The Creation ◽

Crystal Fibers

AbstractWe have investigated the nonlinear propagation of light in photonic crystal fibers filled with nematic liquid crystals. We analyzed a configuration with a periodic modulation of the refractive index corresponding to a matrix of waveguides. Matrices of coupled waveguides allow observing a variety of new phenomena both for low power light beam propagation and with an existence of nonlinear effects. The opportunity for the creation of solitary waves caused by the interplay between diffraction and nonlinear effects in these kinds of fibers is investigated. At low power the propagating light beam spreads as it couples to more and more waveguides. When the intensity is increased the light modifies the refractive index distribution, inducing a defect in the periodic structure. The creation of such a defect can lead to a situation in which the light becomes self-localized and its diffractive broadening is eliminated. Eventually, in the case of positive Kerr-type nonlinearity, a discrete soliton can be created. In the case of negative nonlinearity the refractive index decreases with the optical power and can lead to bandgap shifting. The incident beam, with a frequency initially within the bandgap, is then turned outside the bandgap resulting in the changing of the propagation effect for the discrete diffraction effect. As a consequence the delocalization of the light can be observed.

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