Investigations with all optical sequential circuit at higher data rate

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Devendra Kumar Tripathi
Keyword(s):  
Peak Power ◽  
Pump Current ◽  
Optical Signal ◽  
Data Rate ◽  
Current Data ◽  
All Optical ◽  
Sequential Logic ◽  
Logic Operations ◽  
Processing Network ◽  
Logic System

Abstract All optical signal processing is one of the growing area, finds relevance where fast computing speed is one of the vital concern. Optical sequential logic system is the backbone of the ultrafast processing network. Accordingly, this article explores proposed optical sequential schemes for the JK and T-type optical flip flop’s investigation at higher data rate. The outputs have been verified for the JK and T-type flip flops. Numerical simulations showed ER of 11.6 and 10 dB for the executed designs. Design have been investigated for variation in pump current, data rate (10–100 Gbps), peak power, bias voltage yielded the optimal performance with ER of over 12 dB. This schematic is simple excludes expensive optoelectronic translation and outcomes are well helpful for the design of complex sequential logic operations.

DESIGNING OF ALL-OPTICAL TRI-STATE LOGIC SYSTEM WITH THE HELP OF OPTICAL NONLINEAR MATERIAL

2008 ◽  
Vol 17 (03) ◽  
pp. 315-328 ◽  
Author(s):  
TANAY CHATTOPADHYAY ◽  
GOUTAM KUMAR MAITY ◽  
JITENDRA NATH ROY
Keyword(s):  
High Speed ◽  
Optical Switch ◽  
Digital Signal ◽  
Optical Signal ◽  
Nonlinear Material ◽  
Digital Signals ◽  
Photonic Networks ◽  
Optical Nonlinear Material ◽  
All Optical ◽  
Logic Operations

Nonlinear optics has been of increased interest for all-optical signal, data and image processing in high speed photonic networks. The application of multi-valued (nonbinary) digital signals can provide considerable relief in transmission, storage and processing of a large amount of information in digital signal processing. Here, we propose the design of an all-optical system for some basic tri-state logic operations (trinary OR, trinary AND, trinary XOR, Inverter, Truth detector, False detector) which exploits the polarization properties of light. Nonlinear material based optical switch can play an important role. Tri-state logic can play a significant role towards carry and borrow free arithmetic operations. The principles and possibilities of the design of nonlinear material based tri-state logic circuits are proposed and described.

Performance Evaluation of the Optical AND Gate at 200 Gbps

2017 ◽  
Vol 38 (1) ◽  
Author(s):  
Devendra Kr. Tripathi
Keyword(s):  
Logic Gate ◽  
Extinction Ratio ◽  
Pump Current ◽  
Digital Processing ◽  
Data Rate ◽  
Logic Operation ◽  
Performance Metric ◽  
All Optical ◽  
Output Pattern ◽  
A Current

AbstractThe article explores performance investigation for the all optical AND logic gate at the 200 Gbps data rate. Numerical simulations have been executed and output pattern for the AND logic operation has been verified. Accordingly good extinction ratio of 15.8 dB has been observed. Investigations depict optimum optical performance metric with the key deign parameters as the pump power (>1e-4 W), pump current (>1 ‎Å), current injection efficiency (>0.5), modulator bias voltage (>1.25 V), modulator on off ratio (>10 dB) and the SOA reflectivity (>0 dB). The schematic is evident, simpler tender’s option to endow different input combinations simultaneously. Furthermore, the outcomes are well sustainable to formulate forthcoming advanced higher data rate all-optical digital processing.

Design and Investigations with all Optical Multilogic Network

2019 ◽  
Vol 40 (3) ◽  
pp. 213-223
Author(s):  
Devendra Kr. Tripathi
Keyword(s):  
Numerical Simulation ◽  
Bias Voltage ◽  
Data Rate ◽  
Design Features ◽  
Modulation Formats ◽  
Extinction Factor ◽  
All Optical ◽  
Length Width ◽  
Logic Operations ◽  
Logic Functions

Abstract This article presents investigation for all optical multilogic function in the proposed single photonic network. Logic operations the AND, OR, NOR, XNOR, NOT, Buffer, $\bar AB$, $A\bar B$ have been executed simultaneously at higher data rate for nonreturn-to-zero pattern on the different C-band wavelengths. Numerous logic functions have been accomplished by the optical multiplexer, couplers exploiting SOA nonlinearities, which are else contemplated as cons, if SOA is exercised as an amplifying device. Numerical simulation for parameters as bias voltage of the modulator, nonreturn-to-zero, return-to-zero, Mach-Zehnder type modulation formats, data rate and numerous drives as on-off-ramp, raised cosine, on-off-exp, on-off in conjunction with key design features length, width, thickness of SOA have been aptly explored in terms of the extinction factor. Investigations depicted good performance for the nonreturn-to-zero format. Accordingly, output patterns for the multilogic executions have been verified at 10 Gbps data rate with nonreturn-to-zero pattern. The proposed schematic could be one of the feasible means for the design of upcoming composite photonic computation higher data rate links, as it excludes need for most expensive optoelectronic translations.

An all optical photonic crystal half adder suitable for optical processing applications

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Hamed Azhdari ◽  
Sahel Javahernia
Keyword(s):  
Photonic Crystal ◽  
Optical Waveguides ◽  
High Speed ◽  
Building Blocks ◽  
Optical Signal ◽  
Ring Resonators ◽  
Optical Processing ◽  
Nonlinear Photonic Crystal ◽  
Half Adder ◽  
All Optical

Abstract Increasing the speed of operation in all optical signal processing is very important. For reaching this goal one needs high speed optical devices. Optical half adders are one of the important building blocks required in optical processing. In this paper an optical half adder was proposed by combining nonlinear photonic crystal ring resonators with optical waveguides. Finite difference time domain method wase used for simulating the final structure. The simulation results confirmed that the rise time for the proposed structure is about 1 ps.

Modeling and Design of Enhanced All Optical Signal Regeneration Technique

Optik ◽  
2021 ◽  
pp. 166696
Author(s):  
Bhagwan Das ◽  
M.F.L Abdullah ◽  
Fayaz Ali Dharejo ◽  
Farah Deeba ◽  
Jawad Ali ◽  
...  
Keyword(s):  
Optical Signal ◽  
Signal Regeneration ◽  
All Optical

scholarly journals All-Optical Non-Inverted Parity Generator and Checker Based on Semiconductor Optical Amplifiers

2021 ◽  
Vol 11 (4) ◽  
pp. 1499
Author(s):  
Bingchen Han ◽  
Junyu Xu ◽  
Pengfei Chen ◽  
Rongrong Guo ◽  
Yuanqi Gu ◽  
...  
Keyword(s):  
Optical Amplifiers ◽  
Signal To Noise Ratio ◽  
Low Cost ◽  
Extinction Ratio ◽  
Semiconductor Optical Amplifiers ◽  
Optical Signal ◽  
Probe Light ◽  
All Optical ◽  
Negative Effect ◽  
Parity Generator

An all-optical non-inverted parity generator and checker based on semiconductor optical amplifiers (SOAs) are proposed with four-wave mixing (FWM) and cross-gain modulation (XGM) non-linear effects. A 2-bit parity generator and checker using by exclusive NOR (XNOR) and exclusive OR (XOR) gates are implemented by first SOA and second SOA with 10 Gb/s return-to-zero (RZ) code, respectively. The parity and check bits are provided by adjusting the center wavelength of the tunable optical bandpass filter (TOBPF). A saturable absorber (SA) is used to reduce the negative effect of small signal clock (Clk) probe light to improve extinction ratio (ER) and optical signal-to-noise ratio (OSNR). For Pe and Ce (even parity bit and even check bit) without Clk probe light, ER and OSNR still maintain good performance because of the amplified effect of SOA. For Po (odd parity bit), ER and OSNR are improved to 1 dB difference for the original value. For Co (odd check bit), ER is deteriorated by 4 dB without SA, while OSNR is deteriorated by 12 dB. ER and OSNR are improved by about 2 dB for the original value with the SA. This design has the advantages of simple structure and great integration capability and low cost.

A Novel Semiconductor Ring Laser device Aimed for All-optical Signal processing

2008 ◽  
Author(s):  
Zhuoran Wang ◽  
Guy Verschaffelt ◽  
Gabor Mezosi ◽  
Marc Sorel ◽  
Jan Danckaert ◽  
...  
Keyword(s):  
Signal Processing ◽  
Ring Laser ◽  
Optical Signal Processing ◽  
Optical Signal ◽  
Laser Device ◽  
All Optical ◽  
Semiconductor Ring Laser
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