High Speed All Optical Logic Gates Using Binary Phase Shift Keyed Signal Based On QD-SOA

2015 ◽  
Vol 24 (03n04) ◽  
pp. 1550005 ◽  
Author(s):  
Wenbo Li ◽  
Hongyu Hu ◽  
Xiang Zhang ◽  
Niloy K. Dutta
Keyword(s):  
Phase Shift ◽  
High Speed ◽  
Logic Gates ◽  
Boolean Logic ◽  
Rate Equations ◽  
Hole Burning ◽  
Spectral Hole Burning ◽  
Optical Logic ◽  
Binary Phase ◽  
All Optical

A scheme to realize all-optical Boolean logic functions, XOR, AND and NAND operations using binary phase shift keyed (BPSK) signal based on quantum-dot semiconductor optical amplifiers (QD-SOA) has been designed and studied. Nonlinear dynamics including carrier heating and spectral hole-burning are taken into account together with the rate equations. We demonstrate XOR, AND and NAND operations at 250Gb/s using a pair of QD-SOA Mach-Zehnder interferometers. Results show that this scheme is suitable for high speed all-optical Boolean logic operations and can improve the output quality comparing with the system using on-off-keyed (OOK) signal.

scholarly journals High Speed All-Optical Logic Gate Using QD-SOA and its Application

2017 ◽  
Author(s):  
Shuai Zhao ◽  
Hongyu Hu
Keyword(s):  
High Speed ◽  
Logic Gate ◽  
Logic Gates ◽  
Boolean Logic ◽  
Hole Burning ◽  
Spectral Hole Burning ◽  
Optical Logic ◽  
Carrier Heating ◽  
Optical Logic Gates ◽  
All Optical

The scheme to realize high speed (~250Gb/s) all-optical Boolean logic gates using semiconductor optica amplifiers with quantum-dot (QD-SOA) is introduced and analyzed in this review. Numerical simulation method was presented by solving the rate equation and taking into account nonlinear dynamics including carrier heating and spectral hole-burning. Binary phase shift keyed (BPSK) signal and on-off keyed signal are used to generate high speed all-optical logic gates. The applications based on all-optical logic gates such as, all-optical latches, pseudo random bit sequence (PRBS) generation and all-optical encryption, are also discussed in this review. Results show that the scheme based on QD-SOA is a promising method for the realization of high speed all-optical communication system in the future.

All-Optical Logic Gates Based on Quantum-Dot Semiconductor Optical Amplifier

2018 ◽  
Vol 27 (01n02) ◽  
pp. 1840013 ◽  
Author(s):  
Xiang Zhang ◽  
Sunil Thapa ◽  
Niloy K. Dutta
Keyword(s):  
Quantum Dot ◽  
Semiconductor Optical Amplifier ◽  
Logic Gates ◽  
Optical Amplifier ◽  
Boolean Logic ◽  
Photon Absorption ◽  
Hole Burning ◽  
Optical Logic ◽  
Logic Operation ◽  
All Optical

We propose a scheme to realize all-optical logic operation in quantum-dot semiconductor optical amplifier (QD-SOA) based Mach-Zehnder interferometer (MZI) considering the effects of two-photon absorption (TPA). During propagation of sub-picosecond pulses in QD-SOA, TPA leads to an additional change in carrier recovery dynamics in quantum-dots. We utilize a rate equation model to take into account carrier refill through TPA and nonlinear dynamics including carrier heating and spectral hole burning in the QD-SOA. The simulation results show the TPA induced pumping in the QD-SOA can reduce the pattern effect and increase the output quality of the all-optical logic operation. With TPA, this scheme is suitable for high speed Boolean logic operation at 320 Gb/s.

scholarly journals Phase-Shift Keying Modulated Data Signal Using SOA-MZI-Based All-Optical Logic AND Gate at 80 Gb/s

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Amer Kotb ◽  
Yasser Mohamed
Keyword(s):  
Phase Shift ◽  
Optical Amplifier ◽  
Critical Parameters ◽  
Rate Equations ◽  
Phase Shift Keying ◽  
Optical Logic ◽  
All Optical ◽  
Shift Keying ◽  
Data Signal ◽  
The Impact

All-optical logic AND operation with phase-shift keying (PSK) modulated data signals based on a semiconductor optical amplifier (SOA) assisted Mach-Zehnder interferometer is numerically analyzed and investigated. By solving the rate equations of the SOA, the dependence of the quality factor on the critical parameters of the input signal and the SOA is examined, including the impact of the amplified spontaneous emission to obtain realistic results. The obtained results confirm that the all-optical logic AND scheme with PSK modulated data signals is capable of operating at a data rate of 80 Gb/s with both logical correctness and acceptable quality compared to the system using on-off-keying signal.

All-Optical Signal Processing Based on Nonlinear Effects in Semiconductor Optical Amplifiers

2009 ◽  
Vol 74 ◽  
pp. 39-43 ◽  
Author(s):  
Jian Wu ◽  
Min Xue Wang ◽  
Bing Bing Wu
Keyword(s):  
Signal Processing ◽  
High Speed ◽  
Optical Signal Processing ◽  
Optical Network ◽  
Nonlinear Effects ◽  
Logic Gates ◽  
Optical Signal ◽  
Optical Logic ◽  
All Optical ◽  
Optical Time

In this paper, we report our recent studies on developing nonlinear techniques based on a single SOA for all-optical signal processing at high-speed, with a focus on simple configurations employing commercial SOAs for several key all-optical network applications. Our researches are based on nonlinear polarization rotation (NPR), four-wave mixing (FWM) and cross-phase modulation (XPM) effects in a single SOA. We propose and demonstrate applications of the nonlinear techniques in all-optical logic gates, multi-function format coversion, tunable Lyot birefringent filter and multi-channel optical time division multiplexed (OTDM) demultiplexing.

scholarly journals Enhanced All-Optical Y-Shaped Plasmonic OR, NOR And NAND Gate Models, Analyses, And Simulation For High Speed Computations

2021 ◽  
Author(s):  
Ipshitha Charles ◽  
Alluru Sreev ◽  
SabbiVamshi Krishna ◽  
Sandip Swarnakar ◽  
Santosh Kumar
Keyword(s):  
Integrated Circuits ◽  
High Speed ◽  
Extinction Ratio ◽  
Logic Gates ◽  
Nand Gate ◽  
Optical Logic ◽  
Metal Insulator Metal ◽  
All Optical ◽  
A New Technique ◽  
Complex Circuits

Abstract In this digital era, all-optical logic gates (OLGs) proved its effectiveness in execution of high-speed computations. A unique construction of an all-optical OR, NOR, NAND gates based on the notion of power combiner employing metal–insulator–metal (MIM) waveguide in the Y-shape in a minimal imprint of 6.2 µm × 3 µm is presented and the structure is evaluated by finite-difference time-domain (FDTD) technique. The insertion loss (IL) and extinction-ratio (ER) for proposed model are 6 dB and 27.76 dB for NAND gate, 2 dB and 20.35 dB for NOR gate and 6 dB and 24.10 dB respectively. The simplified model is used in the construction of complex circuits to achieve greater efficiency, which contributes to the emergence of a new technique for designing plasmonic integrated circuits.

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