An all optical approach of frequency encoded NOT based Latch using semiconductor optical amplifier

Abstract

In case of super-fast optical computation and communication, frequency encoding techniques are found to be very promising and reliable one. Optical logic gates based on the principle of frequency conversion of some nonlinear materials play the key role for the implementation of a frequency encoded data processing system. Again semiconductor optical amplifier has already been established successfully for frequency conversion. In frequency encoding system, different frequencies of light signal are used for representation of binary bits 0 or 1 instead of intensity variation. For example 0 and 1 bits of Boolean logic can be coded by two different frequencies of light signaO and respectively. In this communication, we propose the method of developing an optical memory or a NOT based latch. Several types of phase encoded, polarization encoded and intensity encoded optical memories have been reported earlier, including latch also, whereas this proposal have been planned to develop an all optical latch logic using frequency encoded principle and it offers a reliable and faithful processing rather than other established techniques.

All-Optical Approach for Conversion of a Binary Number Having a Fractional Part to Its Decimal Equivalent and Vice-Versa

“…[1][2][3][4][5] Several schemes of all optical logic gates, optical digital memory units, optical algebraic processors, image processors etc were proposed by scientists and technologists. [6][7][8][9][10][11] The choice of optical signal in replacement of conventional electronic signal in data processor is mainly because of the inherent parallelism in optics, which can lead to a super fast up-gradation of computing technology. The major developments conducted in this area are also discussed in the 1st and 2nd International Conferences on Photonic Computing.…”