Tunable omnidirectional reflection bands and defect modes of a one-dimensional photonic band gap structure with liquid crystals

Ha, Young-Ki; Yang, Y.-C.; Kim, J.-E.; Park, H. Y.; Kee, C.-S.; Lim, H.; Lee, J.-C.
July 2001
Applied Physics Letters;7/2/2001, Vol. 79 Issue 1, p15
Academic Journal
We have theoretically investigated the tunability of the omnidirectional reflection band (ORB) of a one-dimensional (1D) photonic crystal (PC) consisting of alternating isotropic dielectric and nematic liquid crystal layers by an external electric field. The width of the ORB becomes wide as the external voltage increases, but the center frequency is changed little. The frequency of the defect mode created by inserting a layer of liquid crystals into a 1D dielectric PC is also found to be tunable by the application of external voltage. These properties can be applied to tunable optical filters or optical switches. © 2001 American Institute of Physics.


Related Articles

  • Optical filter based on omnidirectional reflectors. Liu, K.; Yuan, X. D.; Ye, W. M.; Ji, J. R.; Zeng, M.; Zeng, C. // Applied Physics B: Lasers & Optics;Mar2006, Vol. 82 Issue 3, p391 

    Optical filters based on dielectric omnidirectional reflectors are theoretically analyzed both in the frequency domain and in time domain. It is shown that an optical filter can be made by drilling periodic air holes in a dielectric omnidirectional reflector. The filter’s optical...

  • The effect of photonic structures on the light guiding efficiency of fluorescent concentrators. Peters, M.; Goldschmidt, J. C.; Löper, P.; Bläsi, B.; Gombert, A. // Journal of Applied Physics;Jan2009, Vol. 105 Issue 1, p014909 

    It is possible to increase the efficiency of fluorescent concentrator systems with photonic structures. This is achieved by reducing the losses caused by the loss cone of total internal reflection. Examples of fluorescent concentrators we are currently working with are given and different...

  • Chirp-controlled soliton fission in tapered optical fibers. Türke, D.; Wohlleben, W.; Teipel, J.; Motzkus, M.; Kibler, B.; Dudley, J.; Giessen, H. // Applied Physics B: Lasers & Optics;Apr2006, Vol. 83 Issue 1, p37 

    Manipulation of the input pulse chirp during supercontinuum generation in tapered fibers provides precise control of the soliton fission process taking place in the taper waist. Simulations and experiments demonstrate that controlling this pre-chirp by a pulse shaper can be applied to compensate...

  • Cladding mode resonances of etch-eroded fiber Bragg grating for ambient refractive index sensing. Na Chen; Binfeng Yun; Yiping Cui // Applied Physics Letters;3/27/2006, Vol. 88 Issue 13, p133902 

    In this Letter, the cladding mode resonances of a chemical etch-eroded fiber Bragg grating are proposed for highly sensitive ambient refractive index sensing. The varying characteristics of several different order cladding mode resonances with ambient refractive index are explored...

  • Growth dynamics of photosensitive gratings in optical fibers. LaRochelle, S.; Mizrahi, V.; Stegeman, G. I.; Sipe, J. E. // Applied Physics Letters;8/20/1990, Vol. 57 Issue 8, p747 

    We study the growth dynamics of photosensitive fiber gratings assuming a local bleaching model, and demonstrate that sustained grating growth is possible. Good agreement with our experimental results is obtained after including fiber heating effects.

  • Analysis and Comparison of Various Shape Mirrors Used in Omnidirectional Cameras with Parameter Variation. KUO-YANG TU // Journal of Information Science & Engineering;May2009, Vol. 25 Issue 3, p945 

    The studies on omnidirectional cameras usually focus on design and/or development of the complicated structure for a wide range of view. However, difficult calibration and expensive cost arisen from the complicated structure of omnidirectional cameras are considerable. In this paper, imprecise...

  • Medida de Espesores de Películas Utilizando Convergencia de Frente de Onda. Gómez, D.; León, J.; Patiño, M. // Revista Colombiana de Física;2008, Vol. 40 Issue 2, p408 

    In many sectors of the industry the need of implementate non-invasive, fast and precise techniques is seen for the determination of the thickness of transparent films. This is made tradicionally with techniques that require static conditions and a controlled ambient. In this work the...

  • TRANSMITTED SIGNSL QUALITY IN BALLPOINT-PEN INTERCONNECT OF GRADED-INDEX PLASTIC OPTICAL FIBER. Kaseda, Y.; Inoue, A.; Mitsui, A.; Suzuki, H.; Koike, Y. // POF Plastic Optical Fiber;Jul/Aug2016, Vol. 26 Issue 4, p1 

    We demonstrate that ballpoint-pen interconnect enabled better transmission for largelymisaligned connection of graded-index plastic optical fiber (GI POF) than conventional butt-coupling. This may result from the reduction of coupling loss and some noises such as modal noise and reflection noise...

  • Evidence of Bloch wave propagation within photonic crystal waveguides. Martin, M.J.; Benyattou, T.; Orobtchouk, R.; Talneau, A.; Berrier, A.; Mulot, M.; Anand, S. // Applied Physics B: Lasers & Optics;Jan2006, Vol. 82 Issue 1, p9 

    We report in this paper results obtained from characterizations of photonic band gap waveguide, using near field optical microscopy. We will show evidence of a Bloch wave propagating within our W1 photonic crystal waveguides (PCWs) structure, using a 2D Fourier transform approach. The processed...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics