01093cam a2200265 i 4500991000386309707536091005s2000 it 00 ita 8846420071b13849451-39ule_instDip.to SSCita302.23Metitieri, Fabio448137Dalla email al chat multimediale :comunità e comunicazione personale in internet /Fabio Metitieri, Giuseppina ManeraMilano :F. Angeli,2000222 p. :ill. ;23 cmBibliografia: p. 221-222.Internet Aspetti socio-culturali Posta elettronicaDiffusioneAspetti socio-culturaliManera, Giuseppinaauthorhttp://id.loc.gov/vocabulary/relators/aut542139.b1384945102-04-1405-10-09991000386309707536LE021 SOC26A2812021000157837le021-E25.00-l- 03030.i1501926327-10-09Dalla email al chat multimediale1440379UNISALENTOle02105-10-09ma -itait 0005451nam 22007334a 450 991101953560332120200520144314.0978661027040897812802704061280270403978047030003904703000359780470856222047085622X97804708562390470856238(CKB)111087027101670(EBL)219762(OCoLC)53978947(SSID)ssj0000140133(PQKBManifestationID)11151271(PQKBTitleCode)TC0000140133(PQKBWorkID)10028419(PQKB)11481458(MiAaPQ)EBC219762(Perlego)2758290(EXLCZ)9911108702710167020030409d2003 uy 0engur|n|---|||||txtccrDistributed feedback laser diodes and optical tunable filters /H. Ghafouri-ShirazWest Sussex, England ;Hoboken, NJ J. Wiley20031 online resource (343 p.)Description based upon print version of record.9780470856185 0470856181 Includes bibliographical references and index.Distributed Feedback Laser Diodes and Optical Tunable Filters; Contents; Preface; Acknowledgements; Glossary of Abbreviations; Glossary of Symbols; 1. An Introduction to Optical Communication Systems; 1.1 Introduction; 1.2 Historical Progress; 1.3 Optical Fibre Communication Systems; 1.3.1 Intensity Modulation with a Direct Detection Scheme; 1.3.2 Coherent Detection Schemes; 1.4 System Requirements for High-Speed Optical Coherent Communication; 1.4.1 Spectral Purity Requirements; 1.4.2 Spectral Linewidth Requirements; 1.5 Summary; 1.6 References2. Principles of Distributed Feedback Semiconductor Laser Diodes: Coupled Wave Theory2.1 Introduction; 2.2 Basic Principle of Lasers; 2.2.1 Absorption and Emission of Radiation; 2.2.2 The Einstein Relations and the Concept of Population Inversion; 2.2.3 Dispersive Properties of Atomic Transitions; 2.3 Basic Principles of Semiconductor Lasers; 2.3.1 Population Inversion in Semiconductor Junctions; 2.3.2 Principle of the Fabry-Perot Etalon; 2.3.3 Structural Improvements in Semiconductor Lasers; 2.3.4 Material Gain in Semiconductor Lasers2.3.5 Total Radiative Recombination Rate in Semiconductors2.4 Coupled Wave Equations in Distributed Feedback Semiconductor Laser Diodes; 2.4.1 A Purely Index-coupled DFB Laser Diode; 2.4.2 A Mixed-coupled DFB Laser Diode; 2.4.3 A Gain-coupled or Loss-coupled DFB Laser Diode; 2.5 Coupling Coefficient; 2.5.1 A Structural Definition of the Coupling Coefficient for DFB Semiconductor Lasers; 2.5.2 The Effect of Corrugation Shape on Coupling Coefficient; 2.5.3 Transverse Field Distribution in an Unperturbed Waveguide; 2.5.4 Results Based upon the Trapezoidal Corrugation; 2.6 Summary; 2.7 References3. Structural Impacts on the Solutions of Coupled Wave Equations: An Overview3.1 Introduction; 3.2 Solutions of the Coupled Wave Equations; 3.3 Solutions of Complex Transcendental Equations using the Newton-Raphson Approximation; 3.4 Concepts of Mode Discrimination and Gain Margin; 3.5 Threshold Analysis of a Conventional DFB Laser; 3.6 Impact of Corrugation Phase at Laser Facets; 3.7 The Effects of Phase Discontinuity along the DFB Laser Cavity; 3.7.1 Effects of Phase Shift on the Lasing Characteristics of a 1PS DFB Laser Diode3.7.2 Effects of Phase Shift Position (PSP) on the Lasing Characteristics of a 1PS DFB Laser Diode3.8 Advantages and Disadvantages of QWS DFB Laser Diodes; 3.9 Summary; 3.10 References; 4. Transfer Matrix Modelling in DFB Semiconductor Lasers; 4.1 Introduction; 4.2 Brief Review of Matrix Methods; 4.2.1 Formulation of Transfer Matrices; 4.2.2 Introduction of Phase Shift (or Phase Discontinuity); 4.2.3 Effects of Finite Facet Reflectivities; 4.3 Threshold Condition for the N-Sectioned Laser Cavity; 4.4 Formulation of the Amplified Spontaneous Emission Spectrum using the TMM4.4.1 Green's Function Method Based on the Transfer Matrix FormulationAdvances in optical fibre based communications systems have played a crucial role in the development of the information highway. By offering a single mode oscillation and narrow spectral output, distributed feedback (DFB) semiconductor laser diodes offer excellent optical light sources as well as optical filters for fibre based communications and dense wavelength division multiplexing (DWDM) systems. This comprehensive text focuses on the basic working principles of DFB laser diodes and optical filters and details the development of a new technique for enhanced system performance.ConsiLight emitting diodesSolid-state lasersTunable lasersLight filtersLight emitting diodes.Solid-state lasers.Tunable lasers.Light filters.621.36/6Ghafouri-Shiraz H845590MiAaPQMiAaPQMiAaPQBOOK9911019535603321Distributed feedback laser diodes and optical tunable filters4422583UNINA