Wupen Yuen, Gabriel S. Li, and Connie J. Chang-Hasnain, University of California at Berkeley, Berkeley, Calif.
Vertical-cavity surface-emitting lasers (VCSELs) are promising for numerous applications. In particular, due to their inherent single Fabry-Perot mode operation, VCSELs can be very useful for wavelength division multiplexing (WDM) systems allowing high bandwidth and high functionalities. Multiple wavelength VCSEL arrays with wide channel spacings ( 10 nm) provide an inexpensive solution to increasing the capacity of local area networks without using active wavelength controls.
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