Patent ID: 6031851
Filing Date: 2000-02-29
Classification: H01S

Abstract:
A mode-locked semiconductor laser comprising:(a) a saturable absorber section;(b) a gain section having the same composition as that of said saturable absorber section;(c) a non-absorptive waveguide section having an absorption edge wavelength shorter than an oscillation wavelength of said gain section;(d) an electroabsorption modulator section having an absorption edge wavelength intermediate between an oscillation wavelength of said gain section and an absorption edge wavelength of said non-absorptive waveguide section; and(e) a distributed Bragg reflector section having the same composition as that of said non-absorptive waveguide section and including a diffraction grating,said sections (a) to (e) being optically coupled to one another in a single waveguide.