scholarly journals Recording Policryps structures in photonic crystal fibers

2017 ◽  
Vol 9 (1) ◽  
pp. 5 ◽  
Author(s):  
David Poudereux ◽  
Manuel Cano-García ◽  
Domenico Alj ◽  
Roberto Caputo ◽  
Cesare Umeton ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystals ◽  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Photonic Crystal Fibers ◽  
Solid Core ◽  
Holographic Gratings ◽  
Crystal Fiber ◽  
Polymer Dispersed ◽  
Crystal Fibers

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

scholarly journals Light propagation in a photonic crystal fiber infiltrated with mesogenic azobenzene dyes

2017 ◽  
Vol 9 (2) ◽  
pp. 51 ◽  
Author(s):  
Daniel Budaszewski ◽  
Tomasz R Woliński
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystals ◽  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Light Propagation ◽  
Photonic Bandgap ◽  
Photonic Crystal Fibers ◽  
Crystal Fiber ◽  
Photonic Bandgap Fibers ◽  
Crystal Fibers

In this paper, light propagation in an isotropic photonic crystal fiber as well in a silica-glass microcapillary infiltrated with a mesogenic azobenzene dye has been investigated. It appeared that light spectrum guided inside the photonic crystal fiber infiltrated with the investigated azobenzene dye depends on the illuminating wavelength of the absorption band and on linear polarization. Also, alignment of the mesogenic azobenzene dye molecules inside silica glass microcapillaries and photonic crystal fibers has been investigated. Results obtained may lead to a new design of optically tunable photonic devices. Full Text: PDF ReferencesP. Russell. St. J. "Photonic-Crystal Fibers", J. Lightwave Technol. 24, 4729 (2006). CrossRef T. Larsen, A. Bjarklev, D. Hermann, J. Broeng, "Optical devices based on liquid crystal photonic bandgap fibres", Opt. Exp. 11, 2589 (2003). CrossRef D. C. Zografopoulos, A. Asquini, E. E. Kriezis, A. d'Alessandro, R. Beccherelli, "Guided-wave liquid-crystal photonics", Lab Chip, 12, 3598 (2012). CrossRef F. Du, Y-Q. Lu, S-T. Wu, "Electrically tunable liquid-crystal photonic crystal fiber", Appl. Phys. Lett 85, 2181 (2004) CrossRef D. C. Zografopoulos, E. E. Kriezis, "Tunable Polarization Properties of Hybrid-Guiding Liquid-Crystal Photonic Crystal Fibers", J. Lightwave Technol. 27 (6), 773 (2009) CrossRef S. Ertman, M. Tefelska, M. Chychłowski, A. Rodriquez, D. Pysz, R. Buczyński, E. Nowinowski-Kruszelnicki, R. Dąbrowski, T. R. Woliński. "Index Guiding Photonic Liquid Crystal Fibers for Practical Applications", J. Lightwave Technol. 30, 1208 (2012). CrossRef D. Noordegraaf, L. Scolari, J. Laegsgaard, L. Rindorf, T. T. Alkeskjold, "Electrically and mechanically induced long period gratings in liquid crystal photonic bandgap fibers", Opt. Expr. 15, 7901 (2007) CrossRef M. M. Tefelska, M. S. Chychlowski, T. R. Wolinski, R. Dabrowski, W. Rejmer, E. Nowinowski-Kruszelnicki, P. Mergo, "Photonic Band Gap Fibers with Novel Chiral Nematic and Low-Birefringence Nematic Liquid Crystals", Mol. Cryst. Liq. Cryst. 558(1), 184 (2012). CrossRef S. Mathews, Y. Semenova, G. Farrell, "Electronic tunability of ferroelectric liquid crystal infiltrated photonic crystal fibre", Electronics Letters, 45(12), 617 (2009). CrossRef V. Chigrinov, H-S Kwok, H. Takada, H. Takatsu, "Photo-aligning by azo-dyes: Physics and applications", Liquid Crystals Today, 14:4, 1-15, (2005) CrossRef A. Siarkowska, M. Jóźwik, S. Ertman, T.R. Woliński, V.G. Chigrinov, "Photo-alignment of liquid crystals in micro capillaries with point-by-point irradiation", Opto-Electon. Rev. 22, 178 (2014); CrossRef D. Budaszewski, A. K. Srivastava, A. M. W. Tam, T. R. Woliński, V. G. Chigrinov, H-S. Kwok, "Photo-aligned ferroelectric liquid crystals in microchannels", Opt. Lett. 39, 16 (2014) CrossRef J-H Liou, T-H. Chang, T. Lin, Ch-P. Yu, "Reversible photo-induced long-period fiber gratings in photonic liquid crystal fibers", Opt. Expr. 19, (7), 6756, (2011) CrossRef T. T. Alkeskjold, J. Laegsgaard, A. Bjarklev, D. S. Hermann, J. Broeng, J. Li, S-T. Wu, "All-optical modulation in dye-doped nematic liquid crystal photonic bandgap fibers", Opt. Exp, 12 (24), 5857 (2004) CrossRef K. Ichimura, Y. Suzuki, T. Seki, A. Hosoki, K. Aoki, "Reversible change in alignment mode of nematic liquid crystals regulated photochemically by command surfaces modified with an azobenzene monolayer", Langmuir, 4, 1214 (1988) CrossRef http://www.beamco.com/Azobenzene-liquid-crystals DirectLink K. A. Rutkowska, K. Orzechowski, M. Sierakowski, "Wedge-cell technique as a simple and effective method for chromatic dispersion determination of liquid crystals", Phot. Lett, Poland, 8(2), 51 (2016). CrossRef L. Deng, H.-K. Liu, "Nonlinear optical limiting of the azo dye methyl-red doped nematic liquid crystalline films", Opt. Eng. 42, 2936-2941 (2003). CrossRef J. Si, J. Qiu, J. Guo, M. Wang, K. Hirao, "Photoinduced birefringence of azodye-doped materials by a femtosecond laser", Appl. Opt., 42, 7170-7173 (2008). CrossRef

scholarly journals Frequency dependence of electric field tunability in a photonic liquid crystal fiber based on gold nanoparticles-doped 6CHBT nematic liquid crystal

2020 ◽  
Vol 12 (4) ◽  
pp. 115
Author(s):  
Miłosz Chychłowski ◽  
Tomasz Woliński
Keyword(s):  
Gold Nanoparticles ◽  
Optical Properties ◽  
Liquid Crystal ◽  
Liquid Crystals ◽  
Photonic Crystal ◽  
Electric Field ◽  
External Electric Field ◽  
Photonic Crystal Fibers ◽  
Crystal Fiber ◽  
Crystal Fibers

In this paper, we investigate an external electric field frequency influence on a photonic liquid crystal fiber (PLCF) based on a gold nanoparticles (NPs)-doped nematic liquid crystal (LC) and its response to the external electric field. We used a 6CHBT nematic LC doped with 2-nm gold NPs in a weight concentration of 0.1%, 0.2%, 0.3%, and 0.5%. Full Text: PDF ReferencesJ. C. Knight, T. A. Birks, P. St. J. Russell, and D. M. Atkin, "All-silica single-mode optical fiber with photonic crystal cladding," Opt. Lett. 21, 1547-1549 (1996) CrossRef J. C. Knight,T. A. Birks, P. S. J.Russell, , and J. P. De Sandro, "Properties of photonic crystal fiber and the effective index model", JOSA A, 15(3), 748-752, (1998) CrossRef S. A. Cerqueira,F. Luan, C. M. B. Cordeiro, A. K. George, and J. C. Knight, "Hybrid photonic crystal fiber", "Optics Express", 14(2), 926-931,(2006) CrossRef W. Bragg, "Liquid Crystals", Nature 133, 445-456, (1934) https://doi.org/10.1038/133445a0 CrossRef J. Kędzierski, K. Garbat, Z. Raszewski, M. Kojdecki, K. Kowiorski, L. Jaroszewicz, and W. Piecek, "Optical properties of a liquid crystal with small ordinary and extraordinary refractive indices and small optical anisotropy", Opto-Electronics Review, 22(3), 162-165, (2014) CrossRef Y. Li, and S. T. Wu, "Polarization independent adaptive microlens with a blue-phase liquid crystal", Optics express, 19(9), 8045-8050, (2011) CrossRef T. Woliński, S. Ertman, K. Rutkowska, D. Budaszewski, M. Sala-Tefelska, M. Chychłowski, K. Orzechowski, K. Bednarska, P. Lesiak, "Photonic Liquid Crystal Fibers - 15 years of research activities at Warsaw University of Technology", Phot. Lett. Pol., (11), (2), 22-24, (2019) https://doi.org/10.4302/plp.v11i2.907. CrossRef T.T. Larsen, A. Bjraklev, D.S. Hermann, J. Broeng, Opt. Expr. 11(20), 2589, (2003) CrossRef T.R. Woliński, K. Szaniawska, K. Bondarczuk, P. Lesiak, A.W. Domański, R. Dąbrowski, E. Nowinowski-Kruszelnicki, J. Wójcik, "Propagation properties of photonic crystal fibers filled with nematic liquid crystals", Opto-Electron. Rev. 13(2), 59 (2005) DirectLink L. Scolari, S. Gauza, H. Xianyu, L. Zhai, L. Eskildsen, T. T. Alkeskjold, S.-T. Wu, and A. Bjarklev, "Frequency tunability of solid-core photonic crystal fibers filled with nanoparticle-doped liquid crystals," Opt. Express 17(5), 3754-3764 (2009). CrossRef A. Siarkowska, M. Chychłowski, D. Budaszewski, B. Jankiewicz, B. Bartosewicz, and T. R. Woliński, "Thermo-and electro-optical properties of photonic liquid crystal fibers doped with gold nanoparticles", Beilstein Journal of Nanotechnology, 8(1), 2790-2801, (2017) CrossRef D. Budaszewski, M. Chychłowski, A. Budaszewska, B. Bartosewicz, B. Jankiewicz, and T. R. Woliński, "Enhanced efficiency of electric field tunability in photonic liquid crystal fibers doped with gold nanoparticles", Optics express, 27(10), 14260-14269, (2019) CrossRef D. Budaszewski, A. Siarkowska, M. Chychłowski, B. Jankiewicz, B. Bartosewicz, R. Dąbrowski, T. R. Woliński, "Nanoparticles-enhanced photonic liquid crystal fibers", Journal of Molecular Liquids, 267, 271-278, (2018) CrossRef

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.

Different Photonic Crystal Fibers Configurations with the Key Solutions for the Optimization of Data Rates Transmission

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
IS Amiri ◽  
Ahmed Nabih Zaki Rashed
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Photonic Crystal Fibers ◽  
Pulse Code Modulation ◽  
Quantization Level ◽  
Crystal Fiber ◽  
Data Rates ◽  
Code Modulation ◽  
Crystal Fibers ◽  
Pulse Broadening

AbstractThe study has outlined various photonic crystal fibers (PCFs) configurations for the key solution to the optimization of data rates transmission. The proposed fibers that are namely octagonal photonic crystal fiber (OPCF), hexagonal photonic crystal fiber (HPCF), and elliptical photonic crystal fiber (E-PCF) are used in the system. The dispersion parameter coefficient, pulse broadening variations, and data rates transmission are examined for proposed fibers under the same fiber lengths and number of quantization level with using pulse code modulation (PCM). The system performance is enhanced with OPCF with reducing dispersion factor, pulse broadening effects and consequently increasing data rates transmission.

scholarly journals Transmittance of tapered photonic crystal fibers with absorbing coatings

2020 ◽  
Vol 238 ◽  
pp. 08005
Author(s):  
Mauricio Salazar Sicacha ◽  
Vladimir P. Minkovich ◽  
Alexander B. Sotsky ◽  
Artur V. Shilov ◽  
Luidmila I. Sotskaya
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Adsorption Layer ◽  
Photonic Crystal Fibers ◽  
Resonant Coupling ◽  
Crystal Fiber ◽  
Fiber Mode ◽  
Refractive Index Sensors ◽  
Crystal Fibers ◽  
Air Channels

The interaction of the adiabatically tapered photonic crystal fiber fundamental mode with a thin-film absorbing coating, deposited on a surface of a taper waist, on transmission of a tapered fiber is studied. Examples of using this interaction in refractive index sensors and for detection of an adsorption layer with ammonia molecules upon contact of the absorbing coating with a liquid medium are presented. It is obtained that a pronounced sensory effect occurs in the case of a resonant coupling between the fundamental fiber mode and cladding modes localized between photonic crystal fiber air channels and the absorbing coating.

SUPERCONTINUUM GENERATION IN SOLID-CORE PHOTONIC CRYSTAL FIBER INFILTRATED WITH WATER-ETHANOL MIXTURE

2020 ◽  
pp. 92-102
Author(s):  
Quang
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Numerical Study ◽  
Pump Energy ◽  
Ethanol Solution ◽  
Solid Core ◽  
Ethanol Mixture ◽  
Crystal Fiber ◽  
Dispersion Regime ◽  
Crystal Fibers

In this paper, we report a numerical study of the supercontinuum (SC) generation in solid-core photonic crystal fibers infiltrated with water-ethanol mixtures. A photonic crystal fiber is constructed as borosilicate glass NC21, which consists of 7 rings of air holes infiltrated with water-ethanol mixtures. We also considered numerically the influence of concentration of the ethanol solution on the dispersion of the fundamental mode. SC generation was demonstrated for the fiber long 20 cm with a pump pulse of 200 fs, the coupled energy of 0.5 nJ at the center wavelength of 1064 nm in the normal dispersion regime. The concentration of ethanol infiltrated to the fiber, the pulse of duration and the pump energy are investigated.

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
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