Investigations on all Optical Arithmetic and Logical Computing Based on SOA Nonlinearity

Abstract

Optics has been employed in computing and communication for the last several newlinedecades. To improve the performance of computer systems, there are several methods newlineunder research. The hunt for new optical logic, arithmetic, and algebraic processors is newlinestill ongoing. With the small structure, some contributions to the vast area of optical newlinecomputing are carried out in this research work. This research aims to create all-optical newlinelogic and arithmetic structures by using various beneficial techniques. According to newlinea review of the literature, many works have been done in the field of optical computing. newlineIn this work, the performance analysis of nonlinear principles for basic arithmetic newlineand logic structures with various modulation formats is presented. As a result, it was newlineattempted to analyze and compare several all-optical architectures to identify a single newlinecompact structure to produce basic logic gate outputs with the lowest power consumption. newlineThe effects of four-wave mixing and cross-phase modulation at 10 Gb/s were newlineanalyzed for 2, 4, and 8-channel wavelength division multiplexed systems. The analysis newlineis done for non-return to zero, return to zero, differential phase-shift keying, carrier newlinesuppressed return to zero, and duo binary signals. The multi-logic structure is proposed newlinewith the use of cross gain modulation and four-wave mixing in such a way that any combinational newlineoutputs may be achieved in a single structure by tuning the semiconductor newlineoptical amplifier filter to a certain wavelength of either blue or red-shifted components. newlineThe outputs show a clear eye-opening with an extinction ratio of 12 dB and a rise-fall newlineperiod of less than 40ps. The inverse inter-modulation impact of semiconductor optical newlineamplifier on XOR-based simulation is also proposed to minimize the number of transitions newlinebetween the succeeding components. It simultaneously encrypts the data using a newlinecontrol bit. The design is validated with the highly nonlinear fiber (HNLF) and interferometer newlinestructure (SOA-MZI) designs.