Electrically tuned whispering gallery mode microresonator based on Kagomé photonic crystal fibers infiltrated with nematic liquid crystals

2019 ◽  
Vol 58 (6) ◽  
pp. 1351
Author(s):  
Fansheng Kong ◽  
Bin Yang ◽  
Chengkun Yang ◽  
Hao Zhang ◽  
Bo Liu ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Photonic Crystal ◽  
Photonic Crystal Fibers ◽  
Nematic Liquid Crystals ◽  
Whispering Gallery Mode ◽  
Whispering Gallery ◽  
Crystal Fibers

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

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

Linear and nonlinear properties of photonic crystal fibers filled with nematic liquid crystals

2006 ◽  
Vol 14 (4) ◽  
Author(s):  
K. Brzdąkiewicz ◽  
U. Laudyn ◽  
M. Karpierz ◽  
T. Woliński ◽  
J. Wójcik
Keyword(s):  
Liquid Crystals ◽  
Photonic Crystal ◽  
Light Propagation ◽  
Near Infrared ◽  
Photonic Crystal Fibers ◽  
Water Solution ◽  
Nematic Liquid Crystals ◽  
Optical Power ◽  
Linear And Nonlinear ◽  
Crystal Fibers

AbstractWe investigate linear and nonlinear light propagation in the photonic crystal fibers infiltrated with nematic liquid crystals. Such a photonic structure, with periodic modulation of refractive index, which could be additionally controlled by the temperature and by the optical power, allows for the study of discrete optical phenomena. Our theoretical investigations, carried out with the near infrared wavelength of 830 nm, for both focusing and defocusing Kerr-type nonlinearity, show the possibility of the transverse light localization, which can result in the discrete soliton generation. In addition, we present the preliminary experimental results on the linear light propagation in the photonic crystal fiber with the glycerin-water solution and 6CHBT nematics, as the guest materials.

Thermal optical nonlinearity in photonic crystal fibers filled with nematic liquid crystals doped with gold nanoparticles

2017 ◽  
Author(s):  
Piotr Lesiak ◽  
Daniel Budaszewski ◽  
Karolina Bednarska ◽  
Michał Wójcik ◽  
Piotr Sobotka ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Liquid Crystals ◽  
Photonic Crystal ◽  
Photonic Crystal Fibers ◽  
Nematic Liquid Crystals ◽  
Optical Nonlinearity ◽  
Crystal Fibers

scholarly journals Chiral nematic liquid crystals as an alternative filling in photonic crystal fibers

2010 ◽  
Vol 2 (1) ◽  
Author(s):  
Marzena M. Tefelska ◽  
Tomasz R. WoliĹ„ski ◽  
Roman DÄ…browski ◽  
Jan WĂłjcik
Keyword(s):  
Liquid Crystals ◽  
Photonic Crystal ◽  
Photonic Crystal Fibers ◽  
Nematic Liquid Crystals ◽  
Chiral Nematic ◽  
Crystal Fibers

scholarly journals Low-loss propagation and continuously tunable birefringence in high-index photonic crystal fibers filled with nematic liquid crystals

2009 ◽  
Vol 17 (21) ◽  
pp. 19298 ◽  
Author(s):  
Slawomir Ertman ◽  
Tomasz R. Wolinski ◽  
Dariusz Pysz ◽  
Ryszard Buczynski ◽  
Edward Nowinowski-Kruszelnicki ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Photonic Crystal ◽  
Photonic Crystal Fibers ◽  
Nematic Liquid Crystals ◽  
High Index ◽  
Low Loss ◽  
Crystal Fibers

scholarly journals Non-invasive real-time characterization of hollow-core photonic crystal fibers using whispering gallery mode spectroscopy

2019 ◽  
Vol 27 (21) ◽  
pp. 30842
Author(s):  
Michael H. Frosz ◽  
Riccardo Pennetta ◽  
Michael T. Enders ◽  
Goran Ahmed ◽  
Philip St.J. Russell
Keyword(s):  
Photonic Crystal ◽  
Real Time ◽  
Photonic Crystal Fibers ◽  
Whispering Gallery Mode ◽  
Hollow Core ◽  
Whispering Gallery ◽  
Non Invasive ◽  
Crystal Fibers ◽  
Mode Spectroscopy

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.

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