VCSELs Go the Distance

Vertical-cavity surface-emitting la- sers (VCSELs) have come a long way in the past decade, evolving from a laboratory curiosity to a key component in fiber-optic communications in local area networks (LANs). Rapid advances are reported in 1.5-1.6-┬Ám wavelength VCSELs with tunability and long-reach single-mode fiber transmission. With proven cost benefits in LAN applications, VCSELs are poised to meet the rising market demands of metropolitan area applications.

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