ApplicationNo. 05/380482 filed on 07/18/1973
US Classes:427/163.2, Optical fiber, rod, filament, or waveguide385/129, PLANAR OPTICAL WAVEGUIDE427/165, Glass427/167, Silicon compound coating (e.g., quartz, etc.)427/193, Vitrifiable particles427/223, FLAME CONTACT427/255.19, Metal oxide containing coating427/402, APPLYING SUPERPOSED DIVERSE COATING OR COATING A COATED BASE427/419.4, Vitreous coating65/60.2Plural diverse layers
ExaminersPrimary: Martin, William D. Jr.
Assistant: Schmidt, William H.
Attorney, Agent or Firm
International ClassesC03C 17/34 (20060101)
B23K 26/00 (20060101)
B23K 26/40 (20060101)
C03B 19/00 (20060101)
C03B 19/14 (20060101)
C03B 37/014 (20060101)
C03C 17/02 (20060101)
C03C 23/00 (20060101)
G02B 6/13 (20060101)
AbstractA method of producing a planar optical waveguide by applying to at least a portion of one flat surface of a substantially flat glass substrate having a predetermined desired index of refraction a first coating of glass having an index of refraction greater than that of said glass substrate. Thereafter a second coating of glass having an index of refraction less than that of the first coating of glass is applied over the exposed surface of the first coating of glass. The thickness of the first coating of glass being determined as a function of the highest mode order and the wavelength of light to be propagated within a waveguide having infinite width, and the indices of refraction of the substrate and each of the applied coatings.