Patent ID: 7208770

Claim:
A photonic integrated circuit comprising: at least one active semiconductor device manufactured in a MOCVD reactor comprising: a plurality of semiconductor layers formed on a substrate; an active region included within said layers; a current channel formed through this active region defined by a plurality of current blocking layers formed on adjacent sides of said active region channel; said blocking layers comprising aluminum-containing and non-aluminum-containing III-V compounds and are selected from the group consisting of modulated alternating monolayers of AlAs:O or AlGaAs:O or InAlGaAs:O with InAs or lnGaAs or lnGaAsP, or alternating layers of InAlGaAs:O with layers of InAlGaAs:O; and an oxide source in the reactor for intentional O doping of said aluminum-containing III-V compound layers during the growth of said aluminum-containing III-V compound blocking layers in said MOCVD reactor.