MULTICHANNEL INTEGRATED TUNABLE THERMO-OPTIC LENS AND DISPERSION COMPENSATOR

摘要

The invention relates to tunable dispersion compensators employing a thermo-optic lens. A dispersion compensator in accordance with the present invention comprises a dispersion compensator, comprising: a first and a second waveguide grating, each of the waveguide gratings comprising a first star coupler, an array of waveguides of increasing path lengths, a first end of each of the waveguides of the array of waveguides optically coupled to the first star coupler, and a second star coupler, and a lens comprising a parabolic refractive index distribution, wherein a second end of each of the waveguides of the array of waveguides is optically coupled to the second star coupler, and wherein the lens optically couples the second star coupler of the first waveguide grating and the second star coupler of the second waveguide grating.