Patent ID: 6717187
Filing Date: 2004-04-06
Classification: B82Y,G02F,H01S

Abstract:
A semiconductor optical device, comprising:a semiconductor substrate; a stacked body formed at least by a cladding layer having a first conductivity, an active region formed by an active layer or a photoabsorption layer and a cladding layer having a second conductivity, said stacked body being provided on said semiconductor substrate and formed like a mesa stripe; wherein both sides of said stacked body are buried by a burying layer formed at least by a semi-insulating semiconductor crystal; said burying layer includes a first layer that is placed adjacent to both sides of said stacked body and a second layer that is placed adjacent to said first layer; said first layer includes Ru as a dopant; composition of said second layer is different from composition of said first layer, or, a dopant of said second layer is different from a dopant of said first layer.