ABSTRACT
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To accommodate the coming broadband era, very high-speed photonic
technologies must be developed not only for transmission lines, but also for transmission nodes. The goal is to handle signal rates of more than several terabit/s so that vast amounts of information, including data and moving pictures, can be provided to many subscribers through optical fiber cables. To this end, novel all-optical signal processing technologies capable of superseding conventional electron-based technologies have been extensively studied. The key technologies include ultrashort optical pulse generation and modulation, all-optical multiplexing, all-optical demultiplexing, optical timing extraction, optical signal monitoring, optical linear or nonlinear (soliton) transmission, all-optical repeating, all-optical regenerating (2R or 3R), and so on. This chapter describes very high-speed photonic technologies required for multi-terabit/s
optical fiber transmission systems employing optical time-division multiplexing (OTDM) and time-and wavelength-division multiplexing (OTDM/WDM) techniques, focusing on ultrafast pulse generation, all-optical multiplexing, all-optical demultiplexing, optical timing extraction, and very high-speed optical waveform measurement based on optical sampling
.
