Abstract
A new class of semiconductor laser, tenned Discrete Mode (DM) laser, lias been introduced [1] which provides a low- cost manufacturable technology for high speed stable single mode communications without optical isolation, and which can achieve wide wavelength tunability [2], Here we demonstrate that, in addition, this class of laser exhibits ultra-narrow sub MHz linewidth emission such as is necessary for numerous applications in optical communications and sensors, without introducing severe levels of complexity into the laser design which is of paramount importance for devices to be of practical coimnercial use. We also compare the spectral performance of coimnercial DM and DFB lasers.
© 2007 IEEE
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