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Optical Soliton Communication Using Ultra-Short Pulses
This brief analyzes the characteristics of a microring resonator (MRR) to perform communication using ultra-short soliton pulses. The raising of nonlinear refractive indices, coupling coefficients and radius of the single microring resonator leads to decrease in input power and round trips wherein the bifurcation occurs. As a result, bifurcation or chaos behaviors are seen at lower input power of 44 W, where the nonlinear refractive index is n2=3.2×10−20 m2/W. Using a decimal convertor system, these ultra-short signals can be converted into quantum information. Results show that multi solitons with FWHM and FSR of 10 pm and 600 pm can be generated respectively. The multi optical soliton with FWHM and FSR of 325 pm and 880 nm can be incorporated with a time division multiple access (TDMA) system wherein the transportation of quantum information is performed.
Iran Between Two Revolutions
Emphasizing the interaction between political organizations and social forces, Ervand Abrahamian discusses Iranian society and politics during the period between the Constitutional Revolution of 1905-1909 and the Islamic Revolution of 1977-1979. Presented here is a study of the emergence of horizontal divisions, or socio-economic classes, in a country with strong vertical divisions based on ethnicity, religious ideology, and regional particularism. Professor Abrahamian focuses on the class and ethnic roots of the major radical movements in the modem era, particularly the constitutional movement of the 1900s, the communist Tudeh party of the 1940s, the nationalist struggle of the early 1950s,...
The Post-Colonial State in the Era of Capitalist Globalization
State formation in post-colonial societies differed greatly from the formation of the Western capitalist state. The latter has been extensively studied, while a coherent grasp of the post-colonial state has remained elusive. Amin-Khan provides a critical historical and contemporary understanding of post-colonial state formations in Asia and Africa, and suggests how this process differed from the formation of states in Latin America. In distinguishing between the post-colonial state and the Western capitalist state, the author argues that the unitary colonial state left a strong legacy on the decolonized states of Asia and Africa, reinscribing their subordination vis-à-vis Western states, tr...
Ring Resonator Systems to Perform Optical Communication Enhancement Using Soliton
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.
