Patent ID: 6795595
Filing Date: 2004-09-21
Classification: G02F

Abstract:
A programmable chirp optical modulator comprising:a substrate having an electrooptic property; a waveguide within the substrate, wherein the waveguide includes a first main channel branching into first and second waveguide arms near one end of the substrate, the first and second waveguide arms coupling near another end of the substrate to provide a second main channel; a first coplanar-strip electrode overlying and substantially parallel with a portion of the first waveguide arm; a second coplanar-strip electrode overlying and substantially parallel with a portion of the second waveguide arm; and at least one programmable coplanar-strip electrode overlying the substrate and adjacent to the second coplanar-strip electrode on a side of the second coplanar-strip electrode opposite a side of the second coplanar-strip electrode where the first coplanar-strip electrode is located, wherein the at least one programmable coplanar-strip electrode is substantially parallel with and selectively connectable to the second coplanar-strip electrode to adjust a chirp value of a signal output from the optical modulator.