Patent ID: 6678479
Filing Date: 2004-01-13
Classification: H01S,H04B

Abstract:
A semiconductor electro-absorption modulator integrated light emission element, comprising:a light emitting portion having a semiconductor multiple-quantum-well structure, including a well layer and a barrier layer in an active layer of light emission region thereof, for lasing a single in vertical mode; a modulator proton being positioned at a light emission side of said light emitting portion, and being constructed with a plurality of electro-absorption optical modulators, each having the semiconductor multiple-quantum-well structure including the well layer and the barrier layer therein, and optical separate-confinement-heterostructures putting said semiconductor multiple-quantum-well structure including the well layer and the barrier layer therebetween, wherein an absorption edge wavelength under no biasing condition on the semiconductor multiple-quantum-well structure, owned by said modulator which is near to the light emission side of said light emitting portion, is equal to or longer than the absorption edge wavelength which is owned by said modulator positioned far from the light emission side of said light emitting portion.