Directly-modulated laser
A light source for communications that modulates intensity of light output by varying input current to a semiconductor laser. Primarily used in short-distance communications.
 Lasers with integrated electro-absorption modulators
A semiconductor laser that integrates a modulator which absorbs laser light by changing the band-gap via applied voltage. Primarily used in long-distance communications.
 Semi-insulating buried heterostructure
A type of current-blocking structure in semiconductor lasers, in which both sides of the waveguides - processed to have striped shapes - are embedded by a semi-insulating semiconductor layer.
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Date: 10 March, 2011
City: Tokyo and Kawasaki, Japan
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