Three-input majority function with nonlinear material in all-optical domain

2013 ◽  
Vol 42 (4) ◽  
pp. 349-354 ◽  
Author(s):  
L. A.Bakhtiar ◽  
E. Yaghoubi ◽  
A. Adami ◽  
S. M. Hamidi ◽  
M. Hosseinzadeh
Keyword(s):  
Nonlinear Material ◽  
Majority Function ◽  
All Optical ◽  
Optical Domain

Parity Checking and Generating Circuit with Nonlinear Material in All-Optical Domain

2005 ◽  
Vol 22 (6) ◽  
pp. 1433-1435 ◽  
Author(s):  
Kuladeep Roy Chowdhury ◽  
Debduti De ◽  
Sourangshu Mukhopadhyay
Keyword(s):  
Nonlinear Material ◽  
All Optical ◽  
Optical Domain

DESIGNING OF ALL-OPTICAL TRI-STATE LOGIC SYSTEM WITH THE HELP OF OPTICAL NONLINEAR MATERIAL

2008 ◽  
Vol 17 (03) ◽  
pp. 315-328 ◽  
Author(s):  
TANAY CHATTOPADHYAY ◽  
GOUTAM KUMAR MAITY ◽  
JITENDRA NATH ROY
Keyword(s):  
High Speed ◽  
Optical Switch ◽  
Digital Signal ◽  
Optical Signal ◽  
Nonlinear Material ◽  
Digital Signals ◽  
Photonic Networks ◽  
Optical Nonlinear Material ◽  
All Optical ◽  
Logic Operations

Nonlinear optics has been of increased interest for all-optical signal, data and image processing in high speed photonic networks. The application of multi-valued (nonbinary) digital signals can provide considerable relief in transmission, storage and processing of a large amount of information in digital signal processing. Here, we propose the design of an all-optical system for some basic tri-state logic operations (trinary OR, trinary AND, trinary XOR, Inverter, Truth detector, False detector) which exploits the polarization properties of light. Nonlinear material based optical switch can play an important role. Tri-state logic can play a significant role towards carry and borrow free arithmetic operations. The principles and possibilities of the design of nonlinear material based tri-state logic circuits are proposed and described.

Material Requirements For All-Optical Devices:Nonlinear Properties of Poly-4BCMU

1991 ◽  
Vol 228 ◽  
Author(s):  
G. I. Stegeman ◽  
W. Torruellas ◽  
K. B. Rochford ◽  
R. Zanoni ◽  
W. Krug ◽  
...  
Keyword(s):  
Phase Shift ◽  
Optical Switching ◽  
Photon Absorption ◽  
Nonlinear Material ◽  
Nonlinear Phase Shift ◽  
Linear Absorption ◽  
Absorption Length ◽  
Two Photon ◽  
Nonlinear Phase ◽  
All Optical

The non-resonant third order nonlinearity of conjugated polymers appears to be potentially useful for all-optical devices in waveguide formats.[l,2] This nonlinearity manifests itself as an intensity-dependent refractive index which leads to a nonlinear phase shift over some propagation distance. Device research over the last few years has shown that there are certain minimum requirements for the nonlinear phase shift that need to be achieved over one absorption length of the material.[l,3] There are two principal sources of absorption, the usual linear absorption which is independent of fluence, and two photon absorption for which the absorption scales linearly with intensity. Thus the usefulness of a nonlinear material for all-optical switching devices can be evaluated from a limited number of material parameters, namely n2 (in n = n0 + n2I where I is the local intensity), α0 which is the low power absorption coefficient and β which is the two photon coefficient (in α = α0 + βI). The problem for a given material is to identify spectral regions over which the minimum required phase shift can be achieved.

An all-optical comparison scheme between two multi-bit data with optical nonlinear material

2008 ◽  
Vol 6 (9) ◽  
pp. 693-696 ◽  
Author(s):  
Kuladeep Roy Chowdhury Kuladeep Roy Chowdhury ◽  
Abhijit Sinha Abhijit Sinha ◽  
and Sourangshu Mukhopadhyay Sourangshu Mukhopadhyay
Keyword(s):  
Nonlinear Material ◽  
Optical Nonlinear Material ◽  
All Optical

scholarly journals Implementation of All-Optical 1x4 Memory Register Unit using the Micro-Ring Resonator Structures

2021 ◽  
Author(s):  
Ajay Kumar ◽  
Manish Kumar ◽  
Sumit Kumar Jindal ◽  
Sanjeev Kumar Raghuwanshi ◽  
Rakesh Choudhary
Keyword(s):  
Electromagnetic Interference ◽  
High Speed ◽  
Ring Resonator ◽  
Extinction Ratio ◽  
Contrast Ratio ◽  
Switching Activity ◽  
Flip Flop ◽  
Memory Register ◽  
All Optical ◽  
Optical Domain

Abstract Implementation of switching activity in the all-optical domain is one of the most important aspects in the field of modern high-speed and secured communication technology. Micro-ring Resonator (MRR) based switching activity can be used to implement all-optical active low tri-state buffer logic and clocked D flip-flop. The paper describes the switching activity of micro-ring resonator structures and the switching activity is further used to implement the effective all-optical 4 - bit memory register using the appropriate arrangement of all-optical tri-state buffers and clocked D flip-flops with the functionality of RD and WR. The complete description of layouts and switching mechanisms of all-optical 4-bit memory registers have been explained and appropriate MATLAB simulation results are presented to observe the suitability of the proposed unit. The analysis shows that implementation of tri-state buffer logic and D flip-flop assisted 4-bit memory register in the all-optical domain includes the considerable advantages of optical communication e.g. immunity to electromagnetic interference, parallel computing, compactness, signal security, etc. The manuscript describes the detailed analysis of performance parameters e. g. extinction ratio, contrast ratio, amplitude modulation, on-off ratio, and switching speed of micro-ring resonator structures to achieve an efficient selection of device parameters and finally describes an efficient technique to implement all-optical MRR based 1 x 4 memory registers.

All-optical simultaneous XOR-AND operation using 1-D periodic nonlinear material

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Tanay Chattopadhyay
Keyword(s):  
Contrast Ratio ◽  
Fdtd Method ◽  
Optical Computing ◽  
Material Model ◽  
Nonlinear Material ◽  
Gate Operation ◽  
Nonlinear Materials ◽  
One Dimensional ◽  
All Optical ◽  
Difference Time

Abstract In this paper, an all-optical XOR-AND gate operation has been proposed using one-dimensional periodic nonlinear material model. This structure consists of alternating layers of different nonlinear materials. In this design, we can obtain XOR and AND logical operation simultaneously at the reflected and transmitted port of the periodic structure. Numerical simulation has also been done using the finite-difference-time-domain (FDTD) method. The response time of this switching operation is picoseconds (ps) range order. We find low insertion loss (−3.01 dB), high contrast ratio (14.13 dB) and high extension ratio (10.93 dB) of this device. This design will be useful in future all-optical computing.

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