Femtosecond Technology : From Basic Research to Application Prospects

The new femtosecond technology is the basis for fast transmission of large volumes of information. This book gives a comprehensive introduction to the fundamentals, explains the realisation of this concept and gives guidance to the user in optical data transmission. It should appeals to researchers, process engineers and advanced students.

I Introduction.- I-1 Femtosecond Technology and Its Industrial Impact.- 1. Introduction.- 2. Fundamental Nature of Femtosecond Optics.- 3. Device and Material Research Frontiers.- 4. Ultrafast System Goals.- 5. Summary and Future Tasks.- References.- II Optoelectronics Technology Roadmap and Industry.- II-1 Technology Roadmap for the Japanese Opto-Electronics Industry.- 1. Introduction.- 2. Roadmap for Optical Communication Technology.- 3. Future Prospects for Optoelectronics Technology in Japan.- 4. Summary and Conclusions.- Acknowledgment.- References.- II-2 Technology Roadmap for Optical Communication - A North American Perspective.- 1. Introduction.- 2. Socioeconomic Driving Forces.- 3. Anticipated Consumer Needs - Bandwidth Requirements.- 4. Core Network.- 5. Access Networks.- 6. LANs and Campus Networks.- 7. Conclusion.- References.- II-3 Structural Change in Industry and Reorganization of R&D Systems in Network-Oriented Societies.- 1. Introduction.- 2. From Vertical to Horizontal.- 3. Outsourcing of Industrial R&D Activities.- 4. From Linear Model to "Konoyubi-Tomar?" Model.- 5. From Proprietary to Licensing.- 6. Hopes for the Renaissance of Universities.- 7. Concluding Remarks.- References and Notes.- III Ultrafast Optoelectronics for Telecommunications.- III-1 Femtosecond Semiconductor-Based Optoelectonic Devices for Optical Communications and Signal-Processing Systems.- 1. Introduction.- 2. Semiconductor-Based Femtosecond Devices.- 3. Femtosecond Light Sources.- 4. Femtosecond All-Optical Switches.- 5. Conclusion.- Acknowledgment.- References.- III-2 Generation, Control and Processing of Ultrafast Optical Signals by Electrooptic Modulation/Deflection.- 1. Introduction.- 2. Generation of Wide Optical Spectra by Using Electrooptic Modulation.- 3. Generation of Ultrashort Optical Pulses by Electrooptic Modulation/Deflection.- 4. Overview of the Future.- References.- III-3 Subharmonic Mode-Locking of Semiconductor Lasers Operating at Millimetre-Wave Frequencies.- 1. Introduction.- 2. Devices.- 3. Subharmonic Hybrid Mode-Locking.- 4. Subharmonic Synchronous Mode-locking.- 5. Comparison between S??L and SSML.- 6. Conclusions.- Acknowledgement.- References.- III-4 All-Optical Access Node Technologies.- 1. Introduction and Motivation for Ultrafast Systems.- 2. Soliton Ring Network Architecture & Protocols.- 3. Integration of Components for Access Node.- 4. Q-Parameter Measurements of System Performance.- 5. Summary.- References.- III-5 Ultrafast All-Optical Switch Using Low-Temperature-Grown InGaAs/InAlAs Multiple-Quantum Wells.- 1. Introduction.- 2. Nonlinear Properties of Multi-Quantum Well Structures.- 3. Operation Principle of a Surface-Reflection All-Optical Switch.- 4. Improvement in Switching Speed.- 5. Improvement in Optical Nonlinearity.- 6. Application to Optical Communication Systems.- 7. Future Works.- References.- III-6 High Bandwidth Photodetectors.- 1. Introduction.- 2. Vertically Illuminated Long-Wavelength p-i-n Photodetectors.- 3. Traveling-Wave Photodetector.- 4. Silicon Hetero-Interface Avalanche Photodetector.- 5. Summary.- Acknowledgment.- References.- III-7 Coherent Tunable THz Oscillation by Nonlinear Optics.- 1. Introduction.- 2. Calculation of Gain.- 3. Unidirectional THz-Wave Coupling.- 4. Experiments.- 5. Measurement.- 6. Conclusion.- Acknowledgment.- References.- III-8 Multi-Gap Photoconductive Switches Fabricated by a Scanning Probe Microscope.- 1. Introduction.- 2. Fabrication Process.- 3. Electrooptic Vector Sampling.- 4. Summary.- Acknowledgements.- References.- IV Semiconductor Quantum Structures for Femtosecond Devices.- IV-1 High Speed Quantum Dot Lasers: Phonon Bottleneck Issue in Quantum Dot Lasers.- 1. Introduction.- 2. Lifetime of Confined LO Phonons.- 3. Phonon Bottleneck Issue.- 4. Conclusion and Discussions.- References.- IV-2 Ultrafast Coherent Dynamics of Radiatively Coupled Excitons in Multiple Quantum Wells.- 1. Introduction.- 2. Theoretical Model.- 3. Experimental Techniques...