Patent ID: 7209212
Filing Date: 2007-04-24
Classification: G02F

Abstract:
1. A tunable optical integrated element with liquid crystal capable of applying to filters, couplers or optical add/drop multiplexers comprising: a substrate; a layer of liquid crystal formed on the first side of the substrate as an active layer for modulation; a waveguide set having a second waveguide having grating and a first waveguide, both penetrating and extending the liquid crystal layer in ridge structure; an isolation layer in combination with the substrate layer for sandwiching the liquid crystal layer; and a pair of electrodes connected with power source for applying voltage, the electrodes serving as first cladding layer for the liquid crystal layer, the isolation layer and the substrate; wherein the thickness of the substrate is 15 μm with the refractive index of 1.49, the thickness of the first waveguide is 4 μm while the refractive index is 1.52 and the index modulation is 5.5×10