A New Chaotic Signal Generation of a Series Microring Resonator for Optical Communication

2014 ◽  
Vol 979 ◽  
pp. 491-494
Author(s):  
S. Julajaturasiraratn ◽  
N. Pornsuwancharoen ◽  
J. Phelawan
Keyword(s):  
Optical Communication ◽  
Ring Resonator ◽  
Chaotic Signal ◽  
Input Power ◽  
Microring Resonator ◽  
Light Pulses ◽  
Ring Radius ◽  
Chaotic Signals ◽  
Random Codes ◽  
Random Control

We propose a new method using light pulses tracing in a micro ring resonator, where the randomly digital codes can be performed. The chaotic signals can be generated and formed by the logical pulses by using the signal quantizing method, which can be randomly coded by controlling the specific optical input coupling powers, i.e. coupling coefficient (κ) and ring radii. Simulation results when the ring radius used are between 7-10.0 μm, and the other selected parameters are close to the practical device values that are presented and discussed. The random codes can be generated by the random control of coupling powers, which can be transmitted and retrieved via the design filters by the specific clients. We can be controlled input power used are between 2.0 and 5.0 mW, whereas the quantizing threshold powers and the traveling roundtrips are 0.3–0.4 mW and 8000–10,000, respectively.

scholarly journals Design of 3-stages Parallel Cascade Micro-ring Resonator Type of Interleave Filter for Optical Communication Application

2016 ◽  
Vol 15 (2) ◽  
pp. 66
Author(s):  
Yudi Yuliyus Maulana ◽  
Dadin Mahmudin
Keyword(s):  
Numerical Calculation ◽  
Optical Communication ◽  
Insertion Loss ◽  
Optical Communications ◽  
Ring Resonator ◽  
Microring Resonator ◽  
Ring Resonators ◽  
Pass Band ◽  
Cascade Structure ◽  
Wavelength Filter

Filter will be one of the most important components of the next generation of optical communications. Micro-ring resonators have been widely studied as a potential device for dense wavelength filter due to its advantages. In this paper, a waveguide-based microring-resonator type of interleave filter is investigated. The cascade structure is applied to obtain better characteristics of filter spectra. Our calculation shows that, compared with 2-stage or 4-stage cascade, 3-stage cascaded microring resonator has better performance with pass-band width of 22 GHz, ripple ratio < 1 dB, crosstalk of -33 dB for 1×2 interleaver and -24 dB for 1×4 interleaver. Numerical calculation also clearly shows that general optical waveguide types is reasonable as microring resonator with insertion loss < 2 dB

A Study of Triple Ring Resonator Behavior for Optical Communication

2014 ◽  
Vol 979 ◽  
pp. 495-498
Author(s):  
Ura Klongklew ◽  
Nithiroth Pornsuwancharoen ◽  
Sawatsakorn Chaiyasoonthorn
Keyword(s):  
Optical Communication ◽  
Communication System ◽  
Quantum Communication ◽  
Ring Resonator ◽  
Chaotic Signal ◽  
Gaussian Pulse ◽  
Optical Communication System ◽  
Wavelength Multiplexing ◽  
System Quantum ◽  
Resonator System

We propose a study triple ring resonator using a Gaussian pulse within the triple ring resonator system, whereas the chaotic signal can be generated within a microring device. We have also theoretically shown that the optical non-linear behaviours can be controlled and tuned by varying the couple coefficient (κ) between 0.20 and 0.95, with ring resonator radii between 10 and 20 μm, which is available for suitable result for communication. In application, the transmission of optical communication system , quantum communication and dens wavelength multiplexing.

Multi-Wavelength Bits Generation by Mesh Ring Resonator System for Optical Communication Security Application

2014 ◽  
Vol 979 ◽  
pp. 487-490
Author(s):  
Phichai Youplao ◽  
Nithiroth Pornsuwancharoen ◽  
P.P. Yupapin
Keyword(s):  
Optical Communication ◽  
Pulse Propagation ◽  
Ring Resonator ◽  
Communication Security ◽  
Light Pulses ◽  
Optical Pulse Propagation ◽  
Multi Wavelength ◽  
Resonator System ◽  
Nonlinear Behaviors ◽  
Security Application

We propose a new design of the mesh ring resonator system device using the nonlinear behaviors of optical pulse propagation in the ring resonator system, where the disadvantages of nonlinearity of light pulses propagating in the propose system becomes beneficial. The simulation results obtained have shown the chaotic output signals that can be generated by Kerr effects in the ring resonator system, where the bits logic decision signals can be controlled by using the specify system parameters, the ring radii, the coupling coefficient and the threshold outputs intensity, of the proposed simulation system. The potential of using such the mesh ring resonator system device for optical communication security application is performed and discussed.

BER Calculation of OOK Generated by Using MZI Incorporating with NRRs in a Fiber Optic System

2010 ◽  
Vol 36 ◽  
pp. 311-316
Author(s):  
S. Punthawanunt ◽  
T. Phattaraworamet ◽  
S. Mitatha ◽  
P. Preecha Yupapin
Keyword(s):  
Optical Communication ◽  
Bit Error Rate ◽  
System Performance ◽  
Ring Resonator ◽  
Fiber Optic ◽  
Input Power ◽  
Microring Resonators ◽  
Optic System ◽  
Link Performance ◽  
Fiber Optic System

This paper presents the use of optical device system for OOK (On-Off Keying) generation. The system consists of a MZI (Mach-Zhender Interferometer) incorporated with NRR (Non-linear Ring Resonator) to generate and communicate in optical communication. The performance of the system is calculated in terms of bit error rate (BER). In simulation, a given Gaussian pulse is input into one arm of MZI, which one part of the input power is coupled into one arm which is connected to the series microring resonators, the other is formed the reference arm. The resonant output signals are obtained by the MZI output port, whereas the alternative switching signals can be seen. The resonant output is propagated into the optical system in the transmission line. By using the practical parameters, the link performance can be calculated which can be used to analyzed system performance.

High Capacity Packet Switching with a Soliton Pulse in a Nonlinear Micro Ring Resonator

2008 ◽  
Vol 55-57 ◽  
pp. 481-484
Author(s):  
S. Mitatha ◽  
K. Dejhan ◽  
S. Thongmee ◽  
P. Preecha Yupapin
Keyword(s):  
Packet Switching ◽  
Ring Resonator ◽  
High Capacity ◽  
Chaotic Signal ◽  
Input Power ◽  
Control Input ◽  
Soliton Pulse ◽  
Proposed Model ◽  
Signal Encoding ◽  
Band Pass

We propose a new design of the secured packet switching using the nonlinear behaviors of soliton in a micro ring resonator, where the nonlinear penalty of light traveling in the device becomes benefit. The chaotic signals are generated by a Kerr effects nonlinear type of soliton in a micro ring resonator, where the control input power can be used to specify the output filtering signals. Some device parameters are chosen and simulated using the proposed model. Results obtained have shown in good agreement with the practical device behaviors. The potential of using such a device for communication security is performed and discussed. For instance, the packet switching of the chaotic encoding data increases from the chaotic signal encoding of 100 bit/s. Results obtained have shown the potential of using such a proposed device for the tunable band-pass and band-stop filters, in which the packet switching data can be performed and secured.

scholarly journals Performance Analysis of Crosstalk Subcarrier Multiplexing and Wave Division Multiplexing in Optical Communication System

2021 ◽  
Author(s):  
Ebrahim E. Elsayed
Keyword(s):  
Wavelength Division Multiplexing ◽  
Optical Communication ◽  
Stimulated Raman Scattering ◽  
Optical Network ◽  
Digital Signal ◽  
Input Power ◽  
Single Fiber ◽  
Wavelength Division ◽  
Channel Bandwidth ◽  
Subcarrier Multiplexing

Abstract In traditional optical communication, duplexity is achieved by using two fibers, each having a transmitter and a receiver. Economically, bidirectional wavelength division multiplexing (WDM) transmission systems utilizing a single fiber will be more attractive not only reducing the use of the fiber by a factor of two, but also the number of components. Duplex transmissions over a single fiber can double the capacity of an installed unidirectional link. The idea of this paper is to study another approach using the subcarrier multiplexing (SCM)-based optical network and evaluate the physical transmission quality of analog and digital signal using SCM approach and the characteristic of fiber nonlinear crosstalk such as stimulated Raman scattering, Cross phase modulation and four-wave mixing in the SCM externally modulation optical link. A suitable bandwidth of 890 – 950 MHz is selected for subcarriers and channel bandwidth of 200 KHz and carrier. By measuring the optical bit interference (OBI) performance limitations of the subcarrier multiplexing WDM optical transmission system is investigated. The OBI for 10 channels for input power 1 dB is -40 dB whereas for 110 channels the OBI is -20 dB separation of 250 KHz are considered.

A Signal Detection Method for Harmonic Signal Submerged in Complex Noise Background

2013 ◽  
Vol 397-400 ◽  
pp. 2262-2265 ◽  
Author(s):  
Ai Juan Quan ◽  
Xiao Dong Sun ◽  
Lan Xiang Zhu
Keyword(s):  
Background Noise ◽  
Detection Method ◽  
Wavelet Packet ◽  
Harmonic Signal ◽  
Chaotic Signal ◽  
Music Algorithm ◽  
Harmonic Frequency ◽  
Multiple Signal Classification ◽  
Chaotic Signals ◽  
Correlation Characteristic

This paper presents a method to detect weak harmonic signal embedded in chaotic noise. Using different correlation characteristic of harmonic and chaotic signal ,we can transform the sample signal to a new data sequence which has new harmonic . The new harmonic frequency is m times of the original harmonic and beyond the center bandwidth of noise. Then use wavelet packet decomposition to analysis the energy distribution of harmonic and chaotic signals and extract the component which the harmonic energy concentrated on, In the end, a multiple signal classification (MUSIC) algorithm is employed to estimate harmonic frequencies . The method suit for the complex background noise (strong chaotic noise and gaussian noise).

Concave Rectangle Photonic Crystal Ring Resonator for Ultra-Fast All-Optical Modulation

2018 ◽  
Vol 0 (0) ◽  
Author(s):  
Sana Rebhi ◽  
Radhouene Massoudi ◽  
Monia Najjar
Keyword(s):  
Photonic Crystal ◽  
Insertion Loss ◽  
Ring Resonator ◽  
Extinction Ratio ◽  
Input Power ◽  
Light Signal ◽  
Optical Modulator ◽  
Nonlinear Photonic Crystal ◽  
All Optical ◽  
Photonic Crystal Ring Resonator

AbstractIn this paper, an ultra-fast all-optical modulator, based on a new shape of nonlinear photonic crystal ring resonator, is designed and studied. Numerical methods such as plane wave expansion (PWE) and finite-difference time domain (FDTD) are used to perform simulations. The modulation technique consists of carrier light controlling by means of input light signal and Kerr effect. The investigation of extinction ratio and insertion loss within the carrier input power shows that the choice of 0.7 W is the optimal value of that power to ensure the tradeoff between both characteristics. The suggested modulator demonstrates an excellent extinction ratio about 20.8018, a very low insertion loss of −13.98 and a short switching time about 13.4 ps. According to the obtained results, the modulator can be considered as an ultra-fast and ultra-compact optical component.

Packet Switching Start-Stop Bits Generation Based on Bifurcation Behavior of Light in a Micro Ring Resonator

2008 ◽  
Vol 55-57 ◽  
pp. 505-508 ◽  
Author(s):  
N. Pornsuwancharoen ◽  
J. Kumbun ◽  
P. Preecha Yupapin
Keyword(s):  
Refractive Index ◽  
Coupling Coefficient ◽  
Packet Switching ◽  
Ring Resonator ◽  
Nonlinear Behavior ◽  
The Other ◽  
Optical Packet Switching ◽  
Ring Radius ◽  
Simulation Results ◽  
Bifurcation Behavior

his paper proposes the interesting nonlinear behavior of light known as bifurcation, where the use of such behavior in a micro ring resonator to form the secure digital codes for optical packet switching application is demonstrated. A new concept of the stop-start bits in an optical packet switching protocol is formed by using the bifurcation codes. The bifurcation is introduced when light is input into a nonlinear micro ring device, where the refractive index of an InGaAsP/InP is one of device parameters. The other parameters of the device are coupling coefficient (K) and the ring radius (R), where the ring radii used are ranged from 5-10 microns. Simulation results obtained have shown that the packet switching data can be secured by using the generated start-stop bits as the secured codes.

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