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

All-Optical Parity Circuits Using Nonlinear Directional Coupler

“…In (1), (2) Δβ is the phase mismatch per unit length and k 21 , k 12 are coupling coefficients (3,4). β A power transfer ratio is expressed as a P 2 /P 1, which becomes:…”

“…When a binary digit contains an even number of '0' or '1', we can say that the number has an even parity. Similarly, a binary digit having an odd number of '0' or '1' achieves odd parity [4].…”

“…It means that the binary word to be checked is input several times into all optical XOR gates. In [4], by cascaded XOR gates all-optical parity circuits have been constructed. This scheme has been proposed with applications of optical non-linear materials.…”

“…In this paper, we utilize the property of optical nonlinear material like [4], but instead of cascaded XOR blocks, all-optical parity circuits have been created by using coupled mode theory.…”

A new scheme of implementing all-optical logic systems exploiting material nonlinearity and polarization based encoding technique

“…Lots of proposals that are already put forward from logic, arithmetic, algebraic operations, data processing, computation and image processing are done by either optical signal alone or by opto-electronic mechanism [1][2][3] . To implement the Boolean logic operations with nonlinear material as a switching element the intensity level of the light signal is considered to indicate the logic states [4][5][6] . So, to represent any logic state, it is required to fix a specific intensity level of the light signal in favour of each bit.…”