Patent ID: 6793388
Filing Date: 2004-09-21
Classification: H01S

Abstract:
A method of fabricating a semiconductor laser having a structure in which an equivalent refractive index of two portions disposed apart from each other is higher than that of adjacent portions to these portions in a direction perpendicular to a waveguide direction as well as in parallel with an activation layer, comprising the steps of:forming said activation layer and a plurality of layers in parallel with said activation layer; forming a first groove penetrating through at least some of said plurality of layers; selectively etching a specified layer among at least some of said plurality of layers through which said first groove penetrates, said etching extending from both sides of the first groove to a predetermined position in said specified layer, thus forming a pair of second grooves; and filling up said second grooves with a material having a refractive index higher than that of said specified layer, thus forming two portions having said high equivalent refractive index.