Patent ID: 7179669

Claim:
A method of manufacturing a tunable semiconductor laser, comprising the steps of: forming a buffer layer of a lower cladding layer, a core layer of a waveguide, and an active layer on a substrate; patterning said core layer and said active layer to form an active area for generating a light beam and a curved core layer for guiding said light beam on a portion of said waveguide; depositing an upper cladding layer and an ohmic layer over all the structure; injecting ions to isolate said waveguide area from surrounding area; forming electrodes including an electrode array for shifting the propagation direction of the light beam transmitted through said waveguide by applying electric field or currents to a predetermined portion of said waveguide to; sequentially forming a Fabry-Perot filter and a curved mirror on one facet of said semiconductor laser; wherein said Fabry-Perot filter filters only the light beam having one wavelength selected according to the shift of the propagation direction of said light beam by said electrode array, and said curved mirror reflects the light beam having said wavelength passed through said Fabry-Perot filter.