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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.