Electrically tunable bandpass filter using solid-core photonic crystal fibers filled with multiple liquid crystals

Policryps structures of photo-curable adhesive NOA61 and nematic liquid crystal mixture E7 have been created inside selected microchannels of photonic crystal fibers (PCF). The PCF was selectively infiltrated with the photopolymer-liquid crystal mixture for the writing of a holographic tunable grating inside specific holes of the photonic fiber. A 2um pitch grating was successfully recorded in the PCF inner holes with and without collapsing the fiber cladding. The liquid crystal is properly aligned in both cases. Full Text: PDF ReferencesQ. Liu, et al., "Tunable Fiber Polarization Filter by Filling Different Index Liquids and Gold Wire Into Photonic Crystal Fiber", J. Lightwave Technol. 34(10), 2484 (2016). CrossRef L. Velázquez-Ibarra, A. Díez, E. Silvestre, M.V. Andrés, "Wideband tuning of four-wave mixing in solid-core liquid-filled photonic crystal fibers", Opt. Lett. 41(11), 2600 (2016). CrossRef T. Larsen, A. Bjarklev, D. Hermann, J. Broeng, "Optical devices based on liquid crystal photonic bandgap fibres", Opt. Express 11(20), 2589 (2003). CrossRef H.Y. Choi, M.J. Kim, B.H. Lee, "All-fiber Mach-Zehnder type interferometers formed in photonic crystal fiber", Opt. Express 15(9), 5711 (2007). CrossRef D. Poudereux, P. Corredera, E. Otón, J.M. Otón, X.Q. Arregui, "Photonic liquid crystal fiber intermodal interferometer" Opt. Pura Apl. 46(4), 321 (2013). CrossRef T.R. Woliński, et al., "Tunable Optofluidic Polymer Photonic Liquid Crystal Fibers", Mol. Cryst. Liq. Cryst. 619(1), 2 (2015). CrossRef D. Budaszewski, T.R. Woliński, M.A. Geday, J.M. Otón, "Photonic Crystal Fibers infiltrated with Ferroelectric Liquid Crystals", Phot. Lett. Poland, 2(3), 110 (2010). CrossRef D. Alj, S. Paladugu, G. Volpe, R. Caputo, C. Umeton, "Polar POLICRYPS diffractive structures generate cylindrical vector beams", Appl. Phys. Lett., 107(20), 201101 (2015). CrossRef A. Veltri, R. Caputo, C. Umeton, A.V. Sukhov, "Model for the photoinduced formation of diffraction gratings in liquid-crystalline composite materials", Appl. Phys. Lett. 84(18), 3492 (2004). CrossRef T.J. Bunning, L.V. Natarajan, V.P. Tondiglia, R.L. Sutherland, "Holographic Polymer-Dispersed Liquid Crystals (H-PDLCs)", Annu. Rev. Mater. Sci. 30(1), 83 (2000). CrossRef R. Caputo, L. De Sio, A.V. Sukhov, A. Veltri, C. Umeton, "Development of a new kind of switchable holographic grating made of liquid-crystal films separated by slices of polymeric material", Opt. Lett., 29, 1261 (2004). CrossRef A. Marino, F. Vita, V. Tkachenko, R. Caputo, C. Umeton, A. Veltri, G. Abbate, "Dynamical behaviour of holographic gratings with a nematic film --Polymer slice sequence structure", Euro. Phys. J. E 15, 47 (2004). CrossRef G. Abbate, F. Vita, A. Marino, V. Tkachenko, S. Slussarenko, O. Sakhno, J. Stumpe, "New Generation of Holographic Gratings Based on Polymer-LC Composites: POLICRYPS and POLIPHEM", Mol. Cryst. Liq. Cryst. 453(1), 1 (2006). CrossRef G. Zito, S. Pissadakis, "Holographic polymer-dispersed liquid crystal Bragg grating integrated inside a solid core photonic crystal fiber", Opt. Lett. 38(17), 3253 (2013). CrossRef B. Sun, et al., "Unique Temperature Dependence of Selectively Liquid-Crystal-Filled Photonic Crystal Fibers", IEEE Phot. Technol. Lett. 28(12), 1282 (2016). CrossRef R. Caputo, et al., "POLICRYPS: a liquid crystal composed nano/microstructure with a wide range of optical and electro-optical applications", J. Opt. A: Pure Appl. Opt. 11(2), 024017 (2009). CrossRef J. Li, S.-T. Wu, S. Brugioni, R. Meucci, S. Faetti, "Infrared refractive indices of liquid crystals", J. Appl. Phys. 97(7), 073501 (2005). CrossRef

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Optical limiting in solid-core photonic crystal fibers

2007 Conference on Lasers and Electro-Optics (CLEO) ◽

10.1109/cleo.2007.4452633 ◽

2007 ◽

Author(s):

James J. Butler ◽

Stacey R. Sueoka ◽

Steven R. Montgomery ◽

Steven R. Flom ◽

Richard G.S. Pong ◽

...

Keyword(s):

Photonic Crystal ◽

Photonic Crystal Fibers ◽

Optical Limiting ◽

Solid Core ◽

Crystal Fibers

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Liquid crystal alignment in cylindrical microcapillaries

Opto-Electronics Review ◽

10.2478/s11772-012-0002-5 ◽

2012 ◽

Vol 20 (1) ◽

Cited By ~ 8

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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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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