Method of forming planar optical waveguides

Patent 3934061 Issued on January 20, 1976. Estimated Expiration Date:

January 20, 1993. 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.

Abstract Claims Description Full Text

Patent References

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Inventors

Assignee

Corning Glass Works

Application

No. 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

Examiners

Primary: Martin, William D. Jr.
Assistant: Schmidt, William H.

Attorney, Agent or Firm

International Classes

C03C 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)

Abstract

A 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.