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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Donisi, D. Asquini, R. d'Alessandro, A. Assanto, G. |
| Copyright Year | 2009 |
| Description | Author affiliation: Dept. of Electronic Engineering, ¿Sapienza¿ University of Rome, Via Eudossiana 18, 00184, Italy (Donisi, D.; Asquini, R.; d'Alessandro, A.) || NooEL - Nonlinear Optics and OptoElectronics Lab, University ¿Roma Tre¿, Via della Vasca Navale 84, 00146-Rome, Italy (Assanto, G.) |
| Abstract | Nematic liquid crystals (NLC) consist of dielectrically anisotropic molecules in a fluid state; under proper anchoring at the boundaries of a cell, these elongated molecules tend to align, exhibiting a degree of orientational order and behaving as an optically birefringent uniaxial. NLC are transparent from the ultraviolet to the mid-infrared and exhibit a large electro-optic response. For these reasons, a number of configurations have been investigated for guided-wave devices in optical signal processing, with particular attention to voltage-tunable geometries and, among them, Bragg resonant structures. In this Communication we analyze a novel electro-optic distributed feedback waveguide encompassing full adjustability in degree of confinement and Bragg resonance wavelength using an externally applied voltage. We propose and numerically test the structure, demonstrating its operation as a wavelength-selective reflector and tunable drop-multiplexer. |
| Starting Page | 1 |
| Ending Page | 4 |
| File Size | 587154 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781424448258 |
| e-ISBN | 9781424448272 |
| DOI | 10.1109/ICTON.2009.5185206 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2009-06-28 |
| Publisher Place | Portugal |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Liquid crystals Distributed feedback devices Geometrical optics Optical signal processing Voltage Resonance Optical waveguides Dielectric liquids Anisotropic magnetoresistance Optical feedback Bragg reflectors liquid crystals guided waves |
| Content Type | Text |
| Resource Type | Article |
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