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The title explain new technique of secured and high capacity optical communication signals generation by using the micro and nano ring resonators. The pulses are known as soliton pulses which are more secured due to having the properties of chaotic and dark soliton signals with ultra short bandwidth. They have high capacity due to the fact that ring resonators are able to generate pulses in the form of solitons in multiples and train form. These pulses generated by ring resonators are suitable in optical communication due to use the compact and integrated rings system, easy to control, flexibility, less loss, application in long distance communication and many other advantages. Using these pulses overcome the problems such as losses during the propagation, long distances, error detection, using many repeaters or amplifiers, undetectable received signals, pulse broadening, overlapping and so on. This book show how to generate soliton pulses using ring resonators in the micro and nano range which can be used in optical communication to improve the transmission technique and quality of received signals in networks such as WiFi and wireless communication.

Engineering. --- Microwaves, RF and Optical Engineering. --- Communications Engineering, Networks. --- Security Science and Technology. --- Optics, Optoelectronics, Plasmonics and Optical Devices. --- Appl.Mathematics/Computational Methods of Engineering. --- Engineering mathematics. --- Microwaves. --- Telecommunication. --- Ingénierie --- Mathématiques de l'ingénieur --- Micro-ondes --- Télécommunications --- Characteristic functions. --- Probabilities. --- Resonators. --- Optical communications. --- Solitons. --- Pulses, Solitary wave --- Solitary wave pulses --- Wave pulses, Solitary --- Communications, Optical --- Light communications --- System safety. --- Applied mathematics. --- Optical engineering. --- Electrical engineering. --- Optics, Lasers, Photonics, Optical Devices. --- Connections (Mathematics) --- Nonlinear theories --- Wave-motion, Theory of --- Photonics --- Telecommunication --- Mathematical and Computational Engineering. --- Engineering --- Engineering analysis --- Mathematical analysis --- Electric communication --- Mass communication --- Telecom --- Telecommunication industry --- Telecommunications --- Communication --- Information theory --- Telecommuting --- Hertzian waves --- Electric waves --- Electromagnetic waves --- Geomagnetic micropulsations --- Radio waves --- Shortwave radio --- Mathematics --- Lasers. --- Photonics. --- New optics --- Optics --- Light amplification by stimulated emission of radiation --- Masers, Optical --- Optical masers --- Light amplifiers --- Light sources --- Optoelectronic devices --- Nonlinear optics --- Optical parametric oscillators --- Safety, System --- Safety of systems --- Systems safety --- Accidents --- Industrial safety --- Systems engineering --- Electric engineering --- Mechanical engineering --- Prevention

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This book demonstrates the implementation of an automated measuring system for very efficient measurement of chromatic dispersion, which uses a modulation phase shift method over long haul of optical single mode fiber. The authors show how a new scheme for measuring chromatic dispersion is adopted in conjunction with a tunable laser (TLS), providing the optical power at required wavelength and digital oscilloscope (DOSC) for measuring the phase difference between microwave signals from transmitter and microwave signals at the receiver. This is a novel approach for real-time chromatic dispersion in optical systems such as optical fibers. The setup used is very simple, accurate and cost effective, compared to other methods such as direct measurement, differential mode delay, polarization mode dispersion measurement and phase delay method. Describes algorithms for characterization and controlling optical apparatus; Introduces a new automated characterization system for electro-optic modulators with application of driving microwaves; Describes a new algorithm for automated dispersion measurement for different length of fibers; Provides system analysis to show the effects of critical parameters, such as dimensions on dispersion.

Systems engineering. --- Electronics. --- Signal, Image and Speech Processing. --- Circuits and Systems. --- Electronics and Microelectronics, Instrumentation. --- Dispersion. --- Optics --- Electrical engineering --- Physical sciences --- Engineering systems --- System engineering --- Engineering --- Industrial engineering --- System analysis --- Design and construction --- Signal processing. --- Image processing. --- Speech processing systems. --- Electronic circuits. --- Microelectronics. --- Microminiature electronic equipment --- Microminiaturization (Electronics) --- Electronics --- Microtechnology --- Semiconductors --- Miniature electronic equipment --- Electron-tube circuits --- Electric circuits --- Electron tubes --- Computational linguistics --- Electronic systems --- Information theory --- Modulation theory --- Oral communication --- Speech --- Telecommunication --- Singing voice synthesizers --- Pictorial data processing --- Picture processing --- Processing, Image --- Imaging systems --- Optical data processing --- Processing, Signal --- Information measurement --- Signal theory (Telecommunication)

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Audio Content Security: Attack Analysis on Audio Watermarking describes research using a common audio watermarking method for four different genres of music, also providing the results of many test attacks to determine the robustness of the watermarking in the face of those attacks. The results of this study can be used for further studies and to establish the need to have a particular way of audio watermarking for each particular group of songs, each with different characteristics. An additional aspect of this study tests and analyzes two parameters of audio host file and watermark on a specific evaluation method (PSNR) for audio watermarking. Describes research using a common audio watermarking method for four different genres of music Provides the results of many test attacks Presents tests and analyzes two parameters of audio host file and watermark on a specific evaluation method (PSNR) for audio watermarking

Sound --- Digital audio --- Digital sound recording --- Digital electronics --- Recording and reproducing --- Digital techniques.

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This book discusses analytical approaches and modeling of the breakdown voltage (BV) effects on graphene-based transistors. It presents semi-analytical models for lateral electric field, length of velocity saturation region (LVSR), ionization coefficient (α), and breakdown voltage (BV) of single and double-gate graphene nanoribbon field effect transistors (GNRFETs). The application of Gauss’s law at drain and source regions is employed in order to derive surface potential and lateral electric field equations. LVSR is then calculated as a solution of surface potential at saturation condition. The ionization coefficient is modelled and calculated by deriving equations for probability of collisions in ballistic and drift modes based on the lucky drift theory of ionization. The threshold energy of ionization is computed using simulation and an empirical equation is derived semi-analytically. Lastly avalanche breakdown condition is employed to calculate the lateral BV. On the basis of this, simple analytical and semi-analytical models are proposed for the LVSR and BV, which could be used in the design and optimization of semiconductor devices and sensors. The proposed equations are used to examine BV at different channel lengths, supply voltages, oxide thickness, GNR widths, and gate voltages. Simulation results show that the operating voltage of FETs could be as low as 0.25 V in order to prevent breakdown. However, after optimization, it can go as high as 1.5 V. This work is useful for researchers working in the area of graphene nanoribbon-based transistors.

Chemical structure --- Electrical engineering --- Applied physical engineering --- Biotechnology --- nanotechniek --- biotechnologie --- ingenieurswetenschappen --- elektrische circuits

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