Physics of High Speed Lasers.- Basic Description of Laser Diode Dynamics by Spatially Averaged Rate Equations: Conditions of Validity.- Basic "Small Signal" Modulation Response.- Distortions in Direct Modulation of Laser Diodes.- Direct Modulation Beyond X-Band by Operation at High Optical Power Density.- Improvement in Direct Modulation Speed by Enhanced Differential Optical Gain and Quantum Confinement.- Dynamic Longitudinal Mode Spectral Behavior of Laser Diodes Under Direct High Frequency Modulation.- Signal-Induced Noise in Fiber Links.- Direct Modulation of Semiconductor Lasers Beyond Relaxation Oscillation.- Illustration of Resonant Modulation.- Resonant Modulation of Monolithic Laser Diodes at mm-Wave Frequencies.- Performance of Resonant Modulation in the mm-Wave Frequency Range: Multi-Subcarrier Modulation.- Resonant Modulation of Single-Contact Lasers.- Fiber Transmission Effects, System Perspectives and Innovative Approach to Broadband mm-wave Subcarrier Optical Signals.- Fiber Chromatic Dispersion Effects of Broadband mm-Wave Subcarrier Optical Signals and Its Elimination.- Transmission Demonstrations.- Application of Linear Fiber Links to Wireless Signal Distribution: A High-Level System Perspective.- Improvements in Baseband Fiber Optic Transmission by Superposition of High Frequency Microwave Modulation.- mm-Wave Signal Transport over Optical Fiber Links by "Feed-forward Modulation".