Patent ID: 6101204
Filing Date: 2000-08-08
Classification: H01S

Abstract:
A process for integrating a semiconductor laser and modulator on a first side of a semiconductor operating with reduced wavelength chirping of said modulator's modulated laser output, said process comprising the steps of:forming semiconductor laser means for outputting laser light on said first side;forming wavelength-selective grating means for selecting a specific wavelength of said outputted laser light on said first side;forming semiconductor modulating means having a determinable width for modulating said selected wavelength of light on said first side;forming means for isolating said modulated and selected wavelength of light from said laser and modulating means on said first side, said isolating means further comprising a window region having an optimum length to permit tolerable reflectivity and a width wider than said modulating means;controlling said length of said isolating means by placing a photolithographic V-shaped trench on a single semiconductor foundation substrate side of said semiconductor opposite said first side; andforming an anti-reflective coating on an end section of said isolating means.