Numerical simulation of Tb/s all-optical reconfigurable frequency encoded OR and AND gate using quantum dot semiconductor optical amplifier-based Mach–Zehnder interferometer

Abstract

Frequency encoded reconfigurable logic gates OR and AND are designed using interferometric switch based on quantum dot semiconductor optical amplifier (QDSOA) and simulated using MATLAB for the first time as far as our knowledge goes. The amplitude modulation (AM) and quality factor ([Formula: see text] are calculated using numerical simulations confirming practical feasibility of the logic gates. This paper also investigates the effect of amplified spontaneous emission (ASE) noise on AM, [Formula: see text] and signal-to-noise ratio (SNR) values. AM below 0.005 dB and [Formula: see text] more than 30[Formula: see text]dB ensure error free operation of the logic gates.

Simulation of all‐optical NOR gate design with improved extinction ratio using semiconductor optical amplifier

“…Recently, Bosu and Bhattacharjee 14 reported on the use of dibit-based OR and NOR gates built on a RSOA. Design and simulation of all-optical frequency encoded logic gates XOR and XNOR also found in a recent report 15 realized using QD-SOAs. Currently, this paper presents a simulation of an all-optical NOR gate design using SOA with improved ER.…”

All‐optical Tera Hertz Optical Asymmetric Demultiplexer‐based Memory at a data rate of 300 Gbps

“…e e 0 in (5) where g 0 is the single pass gain, L is the active length, t e is the recovery time, and S e is the saturation energy. Power gain components are calculated by following formula 11,15…”

“…1 Many researchers have already designed all-optical devices using different mechanism or optical switches such as SOA, MZI-SOA, RSOA, terahertz optical asymmetric demultiplexer (TOAD), photonic crystal, ring resonator, and so on. [2][3][4][5][6][7][8][9] In last few years, some researchers have been proposed TOAD, RSOA, ring resonator-based memory devices. [10][11][12][13][14][15][16][17] Maity et al 10 proposed TOAD-based binary flip flop with lower values of extinction ratio (ER) (13.18 dB) and contrast ratio (CR) (18.023 dB).…”

“…Optical devices have high processing speed, low energy consumption, and greater reliability compared to electronic devices 1 . Many researchers have already designed all‐optical devices using different mechanism or optical switches such as SOA, MZI‐SOA, RSOA, terahertz optical asymmetric demultiplexer (TOAD), photonic crystal, ring resonator, and so on 2–9 . In last few years, some researchers have been proposed TOAD, RSOA, ring resonator‐based memory devices 10–17 .…”

Development of a tunable infrared pyroelectric element based on the interferometer principle

“…The spectral characteristic of the continuous transmittance spectrum ( ) T  is shown in Fig. 2, and the resolution of the tuning range of the wavelength of the interferometer can be described in terms of the quality factor F , which is expressed as [14]:…”