Design and Analysis of XOR Logic Gate Based on Two-Photon Absorption

• Published in: MATEC Web of Conferences Vol. 78; p. 1108
• Main Authors: Nazir, N.S., Wahid, M.H.A., Hambali, N.A.M.A., Shahimin, M.M., Khairuddin, N.Z., Hasanuddin, N.H., Ramli, M.M.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Les Ulis EDP Sciences 01-01-2016
• Subjects: Logic circuits; Optical communication; Phase change; Phase transitions; Photon absorption; Pulse duration; Signal to noise ratio
• ISSN: 2261-236X; 2274-7214; 2261-236X
• DOI: 10.1051/matecconf/20167801108

Two-photon absorption with high intensity pump beam occurs in a SOA depends on fast phase change of a weak probe signal. This work analysed optical XOR logic function using two-photon absorption induced fast phase change. A rate equation for SOA and both input data signals A and B with high intensity, configured in the form of MZI has also been proved. The model shows that XOR operation at 10 Gb/s with good signal to noise ratio is obtained with high input intensities. The result on the generation of XOR indicates that operations on 10 Gb/s with a high signal to noise ratio can easily be implemented. The average input power into the SOA is 20 dbm corresponding to the peak power of 5.5 dBm at 10 Gb/s when the width of the input pulse 3.6 ps. The short narrow pulse width is utilised in the study for stronger effect of two-photon absorption.