Waveguide fabrication using organic nonlinear optical materials

Among many types of nonlinear optical (NLO) polymers developed, this paper has focused on azo-dye-functionalized polymers and discussed their channel waveguide fabrication for photonic applications. After examining the critic al issues of the polymer waveguide fabrication, serially-grafted quasi-phas e-matching waveguide for frequency conversion, 3rd-order NLO polymer wavegu ide for all optical switch and trench-filled waveguide grating for waveleng th filter were discussed. The serially-grafted waveguide structure describe d in this paper will be a key area for future photonic signal processing sy stems.