Transcript Slide 1
PHOTONIC CRYSTAL BASED OPTICAL LOGIC GATES USING YDEFECT AND RING RESONATOR CONCEPT OF OPTICAL LOGIC GATE Light is controlled by light rather than electronics PHOTONIC CRYSTAL Photonic crystals are microscopically structured materials, whose unique properties have changed our view of optics and opened up new ways of processing light. Photonic crystals are composed of periodic dielectric or metallo-dielectric nanostructures that affect the propagation of electromagnetic waves (EM) in the same way as the periodic potential in a Semiconductor crystal affects the electron motion by defining allowed and forbidden electronic energy bands. Photonic crystals contain regularly repeating regions of high and low dielectric constant. Technology Photonic crystals are based on silicon-compatible materials and can be processed using technology that is already being employed on a daily basis by the semiconductor industry. Here at Photon Technologies, our research is focused on planar and two-dimensional photonic crystal structures. Which can be manufactured from conventional SOI substrates or integrated into multilayer structures. PHOTONIC CRYSTAL OUTPUT OUTPUT INPUT Y-DEFECT PHOTONIC CRYSTAL By implementing line defect we have realized some of the logic gates based on photonic crystals. Also Yu Lee has designed a 4x2 encoder by V-defect. C Y-Defect Photonic Crystal for OR Logic B=0 B=1 Y=0 Y=1 A=0 A=1 OPTICAL RESONATOR An optical cavity or optical resonator is an arrangement of mirrors that forms a standing wave cavity resonator for light waves. Optical cavities are a major component of lasers, surrounding the gain medium and providing feedback of the laser light. OPTICAL RING RESONATOR EFFECT OF OPTICAL RING RESONATOR IN PHOTONIC CRYSTAL OBJECTIVE To implement the optical ring resonator with Y-Defect photonic crystal structure to achieve optical logics Clock Controlled OR Gate INPUT Y-Defect OUTPUT INPUT Ring Resonator INPUT Clock Work done so far 1. 2. 3. Literature survey. Result Comparison of nonlinear Ring Resonator base Logic Gates with Y-Defect base logic gates Simulation Software Study with the given specification of crystal and its optical Phenomena. Work to be done • Further improvement in the experiment will be carried out by improving output power for logic-1. • We will Simulate clock base OR gate. • We will also implement other gates like AND, NAND, NOR, XOR etc using optical ring resonator with Y-Defect photonic crystal structure References • W.-P. Lin and Y.-F. Hsu “All Optical NOR Gates Implemented by 2-D Photonic Crystals” 978-1-4577-102 5-4/11 /$26.00 ©2011 IEEE • E.-H. Lee, "Micro/nano-scale optical network: A new challenge toward next generation," Proc. ojICTON, vol. 4, pp. 1 18- 1 1 9,2008. • S. Robinson and R. Nakkeeran, "Two dimensional photonic crystal ring resonator based bandpass filter for C-band of CWDM applications,“ Proc. ojIEEENCC,pp. I-4,20 1 1 . • A. P. KabiJan, X. S. Christina, and P. E. Caroline, "Photonic crystal based all optical OR and XOR logic gates," Proc. oj IEEE ICCCNT, pp . 1-4,20 1 0 . • T.-I. Shih, Y.-D. Wu, and J.-J. Lee, "Proposal for compact optical triplexer filter using 2-D photonic crystals," IEEE Photon. Technol. Lett., vol. 21,n o. 1, pp. 18-20,2009. • Y. D. Wu, K. W. Hsu, T. T. Shih, and J. J. Lee, "New design of fourchannel add-drop filters based on double resonant cavity photonic crystals. " J. Opt. Soc. Am. B 26, pp. 640 - 644, 2009. • Smruti Rath, Sonali Prava Dash, Sukanta Kumar Tripathy “Realization of Logic gates using Y defect in a two Dimensional Photonic Crystal Structure” • P. SU. Russell, "Photonic crystal fibers," Science, vol. 299, no. 5605, Jan. 2003. • A.P. Kabilan, X. S. Christina, and P. Elizabeth Caroline, "realization of optical logic gates using photonic crystal", International Conference on Optics and Photonics, Nov, 2009 • Lee, Kun-Yi Yi-Cheng Yang Yen-Juei Lin Lee, Wei-Yu Lee, and Cheng-Che Sheng-Hsien Wong, "The designs of 4x2 encoder based on photonic crystals", Communications and Photonics Conference and Exhibition(ACP), 2009. • M. Qui, "Analysis of guided modes in Photonic crystal fibers using the finite difference time domain method", Microwave and Optical Technology letters, Vol. 30, No.5,sept.2001.