scholarly journals Photonic Crystal Fibers infiltrated with Ferroelectric Liquid Crystals

2010 ◽  
Vol 2 (3) ◽  
Author(s):  
Daniel Budaszewski ◽  
Tomasz R. Woliński ◽  
Morten Geday ◽  
José Manuel Otón
Keyword(s):  
Liquid Crystals ◽  
Photonic Crystal ◽  
Photonic Crystal Fibers ◽  
Ferroelectric Liquid Crystals ◽  
Crystal Fibers

scholarly journals Spectral Properties of Photo-Aligned Photonic Crystal Fibers Infiltrated with Gold Nanoparticle-Doped Ferroelectric Liquid Crystals

Crystals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 785
Author(s):  
Daniel Budaszewski ◽  
Kaja Wolińska ◽  
Bartłomiej Jankiewicz ◽  
Bartosz Bartosewicz ◽  
Tomasz Ryszard Woliński
Keyword(s):  
Liquid Crystals ◽  
Photonic Crystal ◽  
Azo Dye ◽  
Light Propagation ◽  
Response Times ◽  
Photonic Crystal Fibers ◽  
Ferroelectric Liquid Crystal ◽  
Ferroelectric Liquid Crystals ◽  
Gold Nps ◽  
Crystal Fibers

This paper describes our recent results on light propagation in photonic crystal fibers (PCFs) partially infiltrated with W212 ferroelectric liquid crystal (FLC) doped with 1–3 nm gold nanoparticles (NPs) with a concentration in the range of 0.1–0.5% wt. Based on our previous results devoted to PCFs infiltrated with nematic liquid crystals (NLCs) doped with gold NPs (GNPs), we extend our research line with FLCs doped with these NPs. To enhance the proper alignment of the NP-FLC nanocomposites inside PCFs, we applied an additional photo-aligning layer of SD-1 azo-dye material (DIC, Japan). Electro-optical response times and thermal tuning were studied in detail. We observed an improvement in response times for NP-FLC nanocomposites in comparison to the undoped FLC.

Liquid crystal alignment in cylindrical microcapillaries

2012 ◽  
Vol 20 (1) ◽  
Author(s):  
M. Chychłowski ◽  
O. Yaroshchuk ◽  
R. Kravchuk ◽  
T. Woliński
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystals ◽  
Photonic Crystal ◽  
Boundary Conditions ◽  
Photonic Crystal Fibers ◽  
Optical Devices ◽  
Liquid Crystal Alignment ◽  
Disclination Line ◽  
Crystal Alignment ◽  
Crystal Fibers

AbstractA variety of alignment configurations of liquid crystals (LCs) inside the glassy cylindrical capillaries is realized by using alignment materials providing different anchoring. The radial configuration with central disclination line is obtained for homeotropic boundary conditions. In turn, the axial, transversal and tilted alignment structures are realized by using materials for planar anchoring. The uniformity and controlling of the latter structures were provided by photoalignment method. This approach can be further used to control LC alignment in the photonic crystal fibers recognized as advanced elements for different optical devices.

Nonlinear effects in photonic crystal fibers filled with nematic liquid crystals

Open Physics ◽  
2008 ◽  
Vol 6 (3) ◽  
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.

Linear properties of photonic crystal fibers filled with nematic liquid crystals

2007 ◽  
Author(s):  
Katarzyna A. Brzdąkiewicz ◽  
Urszula A. Laudyn ◽  
Mirosław A. Karpierz ◽  
Tomasz R. Woliński ◽  
Jan Wójcik
Keyword(s):  
Liquid Crystals ◽  
Photonic Crystal ◽  
Photonic Crystal Fibers ◽  
Nematic Liquid Crystals ◽  
Crystal Fibers

Liquid Crystals and Polymer-Based Photonic Crystal Fibers

2014 ◽  
Vol 594 (1) ◽  
pp. 55-62 ◽  
Author(s):  
T. R. Woliński ◽  
K. Mileńko ◽  
M. M. Tefelska ◽  
K. A. Rutkowska ◽  
A. W. Domański ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Photonic Crystal ◽  
Photonic Crystal Fibers ◽  
Crystal Fibers

Nonlinear light propagation in photonic crystal fibers filled with nematic liquid crystals

2007 ◽  
Author(s):  
Katarzyna A. Rutkowska ◽  
Urszula A. Laudyn ◽  
Robert T. Rutkowski ◽  
Miroslaw A. Karpierz ◽  
Tomasz R. Wolinski ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Photonic Crystal ◽  
Light Propagation ◽  
Photonic Crystal Fibers ◽  
Nematic Liquid Crystals ◽  
Crystal Fibers

scholarly journals Frequency tunability of solid-core photonic crystal fibers filled with nanoparticle-doped liquid crystals

2009 ◽  
Vol 17 (5) ◽  
pp. 3754 ◽  
Author(s):  
Lara Scolari ◽  
Sebastian Gauza ◽  
Haiqing Xianyu ◽  
Lei Zhai ◽  
Lars Eskildsen ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Photonic Crystal ◽  
Photonic Crystal Fibers ◽  
Solid Core ◽  
Frequency Tunability ◽  
Crystal Fibers

scholarly journals Transmission characteristics of photonic crystal fibers based on filling different kinds of liquid crystals

2015 ◽  
Vol 64 (12) ◽  
pp. 120702
Author(s):  
Wang Jia-Lu ◽  
Du Mu-Qing ◽  
Zhang Ling-Li ◽  
Liu Yong-Jun ◽  
Sun Wei-Min
Keyword(s):  
Liquid Crystals ◽  
Photonic Crystal ◽  
Photonic Crystal Fibers ◽  
Transmission Characteristics ◽  
Crystal Fibers
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