Optoelectronic integrated circuits and method of fabricating and reducing losses using same
Patent 5526449 Issued on June 11, 1996. Estimated Expiration Date: 
July 14, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
July 14, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesPolymeric optical waveguides and methods of forming the same Thin-film matrix structure for an electroluminescent display in particular Low-loss dielectric resonator having a lattice structure with a resonant defect 5195071 Periodic dielectric structure for production of photonic band gap and devices incorporating the same Mirror with photonic band structure Periodic dielectric structure for production of photonic band gap and method for fabricating the same Patent #: 5406573 InventorsApplicationNo. 280105 filed on 07/14/1994US Classes:385/14, INTEGRATED OPTICAL CIRCUIT385/1, TEMPORAL OPTICAL MODULATION WITHIN AN OPTICAL WAVEGUIDE385/2, Electro-optic385/15, WITH OPTICAL COUPLER385/16, Switch (i.e., switching from one terminal to another, not modulation)385/32, Coupling light through a waveguide bend or loop385/43, Tapered coupler385/129, PLANAR OPTICAL WAVEGUIDE385/131, Multilayer structure (mixture)385/132, Channel waveguide438/23, Having diverse electrical device438/24, Including device responsive to nonelectrical signal438/31Optical waveguide structureExaminersPrimary: Healy, BrianAttorney, Agent or FirmForeign Patent References
International ClassesG02B 006/12H01L 021/70 AbstractAn optical circuit and a method for substantially eliminating radiation losses associated with optical integrated circuits and, in particular, bends in optical waveguides, is disclosed. The circuit and waveguide are fabricated on a substrate having a periodic dielectric structure. The periodic dielectric structure exhibits a range of frequencies of electromagnetic radiation which cannot propagate into the structure. The range of frequencies is known as a photonic band gap or frequency band gap. Radiation at a frequency within the frequency band gap of the structure is confined within the circuit and waveguide by the periodic dielectric structure surrounding the circuit and waveguide. Radiation losses are substantially eliminated.Other References
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