Patent ID: 6927895
Filing Date: 2005-08-09
Classification: G02F

Abstract:
1. A wavelength converter comprising: a semiconductor substrate; a first electrode formed on the semiconductor substrate; a lower cladding layer formed on the first electrode; a core layer formed on the lower cladding layer and formed of nonlinear polymer by which the wavelength of light is substantially converted by the inputted light; an upper cladding layer formed on the core layer; and a second electrode formed on the upper cladding layer, which tunes the center wavelengths of the conversion by adjusting the refractive index of the core layer; wherein the core layer includes a relatively thick rib-structure, a quasi-phase matched grating is formed in the rib, and optical fibers having a tapered shape whose diameter gradually decreases toward a waveguide are connected to both ends of the waveguide.