All optical half subtractor using photonic crystal based nonlinear ring resonators

Moradi, Rasoul

doi:10.1007/s11082-019-1831-y

Cited by 58 publications

(11 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Alloptical half adder structure is proposed in a two-dimensional photonic crystal structure using non-linear resonant cavities [11]. Similarly, non-linear photonic crystal-based ring resonator is used to implement half subtractor [12].…”

Section: Introductionmentioning

confidence: 99%

Design of Electro-optic Mach-zehnder Interferometer Based All-optical Binary Half Adder and Half Subtractor

Kaur

Singh

Priyanka

et al. 2021

Preprint

View full text Add to dashboard Cite

By exploiting the phenomena of optical switching, different logic functions for all-optical digital signal processing has been projected. This paper presents the application of optical switching to design of all-optical half adder and half subtractor by Mach-Zehnder interferometer. All-Optical half adder and half subtractor are designed with the optimized structure of 2 × 2 Mach-Zehnder interferometer switch by electro-optic effect in lithium niobate. Numerical simulations of the proposed structure have been conducted to verify the suitability of the designed structure using Opti-BPM software. The implementation of proposed structures is simulated in MATLAB software along with the mathematical description. It is interesting to analyze that the proposed structures are useful to generate combinational and sequential logic circuits in high-speed optical signal processing and switching network.

show abstract

Section: Introductionmentioning

confidence: 99%

Design of Electro-optic Mach-zehnder Interferometer Based All-optical Binary Half Adder and Half Subtractor

Kaur

Singh

Priyanka

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…In recent reports, researchers have shown that a PCRR can be used as an optical filter, and blueshift or redshift may occur in the resonant mod by changing any of these parameters [13,23]. So far, many PhC-based devices such as optical filters [32][33][34][35], logic gates [36][37][38], encoders [39][40][41], comparators [42,43], adders and subtractors [44][45][46], and switches [47][48][49] have been designed and investigated using PCRRs. Novel functionality of PCRR is proposed using nonlinear dielectric rods in the ring resonator [50,51].…”

Section: Introductionmentioning

confidence: 99%

Ultra-Fast Tunable Optoelectronic Full-Adder Based on Photonic Crystal Ring Resonators Covered By Graphene Nanoshells

Naghizade

Saghaei

2021

Preprint

View full text Add to dashboard Cite

This paper reports a new design of a tunable optoelectronic full-adder using two photonic crystal ring resonators (PCRRs). Every PCRR consists of a matrix of silicon rods surrounded by silica rods covered with graphene nanoshells (GNSs). The proposed full-adder is formed by three input ports, two PCRRs, and two output ports for 'SUM' and 'CARRY'. The plane wave expansion technique is used to study the photonic band structure of the fundamental PC microstructure, and the finite-difference time-domain method is also employed in the final design for solving Maxwell's equations to analyze the light propagation inside the structure. We can tune the PhC resonant mode for our desired application by setting the chemical potential of GNSs with an appropriate gate voltage. The numerical results reveal that when the chemical potential of GNSs changes, the switching mechanism occurs and manages the coupling and propagation direction of the input beam inside the structure. We systematically study the effects of physical parameters on the transmission, reflection, and absorption spectra. Our numerical results also demonstrate that the maximum delay is about 0.8 ps. The 663 µm2 area of the proposed full-adder based on two-dimensional materials makes it a building block of every photonic integrated circuit used for data processing systems.

show abstract

“…Optical adders (Jalali-Azizpoor et al 2018;Jalali and Andalib 2019), subtractors (Moradi 2019) and comparators (Serajmohammadi et al 2019) are required for creating an all optical computation system.…”

Section: Introductionmentioning

confidence: 99%

“…Recently different research teams had proposed different works about designing PhC-based optical subtractors. Moradi (Moradi 2019) employed 3 nonlinear ring resonators for designing an all optical PhCbased half subtractor. Askarian et al (Askarian et al 2019a) combined beam interference and threshold switching for designing another structure for all optical half subtractor.…”

Section: Introductionmentioning

confidence: 99%

A novel proposal for ultra-fast all optical half subtractor based on nonlinear ring resonators

et al. 2021

View full text Add to dashboard Cite

Optical half subtractors are required for designing any optical computation system. Operation speed and the on/off contrast ratios are very important characteristics for any optical logic device. A novel structure composed of three nonlinear ring resonators and some optical waveguides are used for designing for the proposed half subtractor with improved operation speed and on/off contrast ratio. The simulation results show that the rise time for this structure is 1.5 ps. Also the on/off contrast ratios for B and D are 13.7 dB and 14.5 dB respectively.

show abstract

All optical half subtractor using photonic crystal based nonlinear ring resonators

Cited by 58 publications

References 44 publications

Design of Electro-optic Mach-zehnder Interferometer Based All-optical Binary Half Adder and Half Subtractor

Design of Electro-optic Mach-zehnder Interferometer Based All-optical Binary Half Adder and Half Subtractor

Ultra-Fast Tunable Optoelectronic Full-Adder Based on Photonic Crystal Ring Resonators Covered By Graphene Nanoshells

A novel proposal for ultra-fast all optical half subtractor based on nonlinear ring resonators

Contact Info

Product

Resources

About