Wavelength-division multiplexed optical integrated circuit with vertical diffraction grating

US5355237A · kind A · utility

Assignee

• The United States of America as represented by the Administrator of the National Aeronautics and Space Administration · US

Inventors

• Robert J. Lang · Pleasanton, US
• Siamak Forouhar · Pasadena, US

Key dates

• Filing date: Mar 17, 1993
• Grant date: Oct 11, 1994
• Expiry date: Mar 17, 2013

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S5/4087
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A semiconductor optical integrated circuit for wave division multiplexing has a semiconductor waveguide layer, a succession of diffraction grating points in the waveguide layer along a predetermined diffraction grating contour, a semiconductor diode array in the waveguide layer having plural optical ports facing the succession of diffraction grating points along a first direction, respective semiconductor diodes in the array corresponding to respective ones of a predetermined succession of wavelengths, an optical fiber having one end thereof terminated at the waveguide layer, the one end of the optical fiber facing the succession of diffraction grating points along a second direction, wherein the diffraction grating points are spatially distributed along the predetermined contour in such a manner that the succession of diffraction grating points diffracts light of respective ones of the succession of wavelengths between the one end of the optical fiber and corresponding ones of the optical ports.