All-optical simultaneous AND & XOR logic gates based on nonlinear micro-ring resonator. Issue 21 (15th December 2018)

• Record Type: Journal Article
• Authors: Mohebbi, Zahra; Nozhat, Najmeh; Khodadadi, Maryam
• Is Part Of: Journal of modern optics. Volume 65:Issue 21(2018)
• Page Start: 2326
• Page End: 2331
• Publication Date: 2018-12-15
• Subjects: All-optical logic gates -- Kerr effect -- Micro-ring resonator -- Optical switching -- Photonic crystal -- High extinction ratio -- Low switching power; Optics -- Periodicals; 535
• DOI: 10.1080/09500340.2018.1508771
• Languages: English
• ISSNs: 0950-0340

Abstract

ABSTRACT: In this paper, we have proposed AND and XOR logic gates simultaneously in one structure. The presented structure is based on two-dimensional (2D) nonlinear photonic crystal with T–shaped waveguide and micro-ring resonator. In the proposed structure, the power consumption is2.5 × 10 7 W/m that is lower than similar logic gates and the extinction ratio is about 6.5 dB. Also, the switching time is attained to be 0.2 and 0.26 ps for AND and XOR logic gates, respectively. Simplicity and small size (18.4 µm×18.4 µm) of the structure make it suitable for photonic integrated circuits (PICs). All simulations are based on finite-difference time-domain (FDTD) and plane wave expansion (PWE) numerical methods.