US4086001A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Planar optical waveguide
Assignee: Honeywell Inc
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Filing: 1975-01-13
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Granted: 1978-04-25
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Expires: 1995-01-13
Abstract
Abstract A thin optical waveguide is formed by a waveguide region having an index of refraction greater than the index of refraction of the substrate. The greater index of refraction of the waveguide region is a result of residual stress within the waveguide region.
Inventors
- 👤 Di Chen
- 👤 Barry G. Koepke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:03
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/10; G02B6/12; G02B6/13; C; C03; C03B; C03B27/00; C03B27/012
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
61 words
A planar optical waveguide comprising: a substrate having an index of refraction; and a stress created planar optical waveguide region in contact with the substrate, wherein the waveguide region is formed by polishing the planar waveguide region having an index of refraction greater than the index of refraction of the substrate as a result of residual stress within the waveguide region.
Claim 2
Dependent Claim
61 words
A planar optical waveguide comprising: a substrate having an index of refraction; and a stress created planar optical waveguide region in contact with the substrate, wherein the waveguide region is formed by polishing the planar waveguide region having an index of refraction greater than the index of refraction of the substrate as a result of residual stress within the waveguide region.
Claim 3
Dependent Claim
93 words
A planar optical waveguide comprising an electro-optic body of lanthanum modified lead zirconate titanate having a substrate region, a flat surface on said body, and a stress created planar optical waveguide region proximate said flat surface between said flat surface and said substrate region, wherein the waveguide region is formed by optical polishing, the substrate region having a first index of refraction and the planar waveguide region having a second index of refraction which is greater than the first index of refraction as a result of residual stress within the planar waveguide region.
Claim 4
Dependent Claim
93 words
A planar optical waveguide comprising an electro-optic body of lanthanum modified lead zirconate titanate having a substrate region, a flat surface on said body, and a stress created planar optical waveguide region proximate said flat surface between said flat surface and said substrate region, wherein the waveguide region is formed by optical polishing, the substrate region having a first index of refraction and the planar waveguide region having a second index of refraction which is greater than the first index of refraction as a result of residual stress within the planar waveguide region.
Claim 5
Dependent Claim
22 words
The optical waveguide of claim 2 wherein the waveguide further comprises electrode means for applying an electric field to the waveguide region.
References Cited (Backward Citations)
US3719462A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-24 | 1981-10-24 | 1982-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-24 | 1985-10-24 | 1986-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-24 | 1989-10-24 | 1990-04-25 | $7700.00 | Window Closed / Lapsed |