Patent ID: 6228670
Filing Date: 2001-05-08
Classification: G02B,H01S

Abstract:
A method of manufacturing a semiconductor optical waveguide array including a plurality of optical waveguides in an array structure in stripe-shaped growth regions enclosed by dielectric thin films on a substrate, the optical waveguide being fabricated through a selective crystal growth and having a semiconductor multilayer structure including a quantum well layer or a semiconductor multilayer structure including a bulk layer, comprising the following steps of:on an occasion of fabricating a plurality of stripe-shaped growth regions elongated parallel to each other, the regions being enclosed with dielectric thin films and selectively growing in each of the growth regions by metallo-organic vapor phase epitaxy a semiconductor multilayer structure including a quantum well layer or a semiconductor multilayer structure including a bulk layer;the growth regions being parallel to each other with an interval therebetween in the selective growing step the interval being less than a diffusion length of a source material in a reactive tube during the crystal growth,the dielectric thin films arranged between the respective growth regions each having a width Wa,a first outer-most dielectric thin film and a second outer-most dielectric thin film arranged respectively outside of outer-most ones of the growth regions respectively having widths W.sub.m1 and W.sub.m2,the widths Wa, W.sub.m1 and W.sub.m2 satisfying a relationship of W.sub.m1 >Wa and W.sub.m2 >Wa.