Abstract
This chapter discusses vertical-cavity surface-emitting laser (VCSEL) diodes. VCSEL becomes a key laser device in optical high-speed local area networks (LANs) by taking the advantage of low power consumption and high speed modulation capability. This device also enables ultraparallel data transfer in digital equipment and computer systems. The chapter discusses another important feature of VCSEL, which is its wide range of continuous wavelength tunability. This feature is utilized in single-mode silica fiber systems for metropolitan area networks. The VCSEL is an exploratory device that has generated a gigabit Ethernet and fiber channel applications. It is emerging into a higher class of data communication system. The chapter further reviews the history, structures, and design concept of VCSEL and presents the advantages of VSCEL structure. It also introduces the progress of VCSELs, covering the spectral band for optical communication by looking at their fabrication technology, and performance issues such as threshold, output power, polarization, modulation, and reliability.
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