Patent ID: 6064685
Filing Date: 2000-05-16
Classification: G02B,H01S

Abstract:
A semiconductor optical reflector made up of a plurality of cascaded Bragg reflector sections, wherein said sections are of the same length L and have the same coupling coefficient, and wherein the length L of each pair of sections is given by the following relationship:L=.lambda..sup.2 /[(n.sub.i+1 +n.sub.i).times.1.7(n.sub.i+1 .LAMBDA..sub.i+1 -n.sub.i .LAMBDA..sub.i)]where .lambda. is the mean value of the Bragg wavelengths reflected by the reflector;n.sub.i+1 and n.sub.i are the respective effective refractive indices of said adjacent sections; and.LAMBDA..sub.i+1 and .LAMBDA..sub.i are the respective periods of said adjacent sections.