US3990777A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-reciprocal component element for integrated optics
Assignee: Siemens AG
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Filing: 1975-11-03
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Granted: 1976-11-09
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Expires: 1995-11-03
Abstract
Abstract A non-reciprocal component element for integrated optics characterized by a substrate having a pair of waveguides disposed thereon either in a stacked relationship or a closely spaced side-by-side relationship with one of the pair of waveguides being of a magneto-optic material having an index of refraction greater than the index of refraction of the substrate. The component has a magnetic field extending in the plane of the waveguides and perpendicular to the direction of propagation of the waves therein. The component is preferably provided with a pair of 3dB couplers and in one embodiment, the magnetic field is controllable so that the element acts as a modulator.
Inventors
- 👤 Franz Auracher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:27
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/09; G02F1/095; G02F1/0955
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
89 words
A non-reciprocal component element for integrated optics in particular for use as an isolator, directional coupler, and modulator for guided waves, said element comprising a substrate having an index of refraction of n 1 , a magneto-optic layer, and a waveguide layer disposed on said substrate in spaced relationship to each other, said magneto-optic layer having an index of refraction n 4 >n 1 and said component having a magnetic field in the plane of the layer and extending perpendicular to the direction of propagation of the waves therein.
Claim 2
Dependent Claim
89 words
A non-reciprocal component element for integrated optics in particular for use as an isolator, directional coupler, and modulator for guided waves, said element comprising a substrate having an index of refraction of n 1 , a magneto-optic layer, and a waveguide layer disposed on said substrate in spaced relationship to each other, said magneto-optic layer having an index of refraction n 4 >n 1 and said component having a magnetic field in the plane of the layer and extending perpendicular to the direction of propagation of the waves therein.
Claim 3
Dependent Claim
25 words
A non-reciprocal component element according to claim 1, in which said magnetic field is a controllable magnetic field so that the element becomes a modulator.
Claim 4
Dependent Claim
17 words
A non-reciprocal component element according to claim 1, which includes two 3dB couplers disposed on the waveguides.
Claim 5
Dependent Claim
29 words
A non-reciprocal component element according to claim 3, in which further said magnetic field is a controllable magnetic field so that the non-reciprocal component element acts as a modulator.
Claim 6
Dependent Claim
83 words
A non-reciprocal component element for use as an isolator, directional coupler, and modulator comprising a substrate having a first and second waveguide arranged in spaced relationship to each other thereon, said substrate having an index of refraction n 1 , said first waveguide being of magneto-optic material having an index of refraction of n 4 >n 1 , said component having a magnetic field extending in the plane of said first waveguide and perpendicular to the direction of propagation of the waves therein.
Claim 7
Dependent Claim
83 words
A non-reciprocal component element for use as an isolator, directional coupler, and modulator comprising a substrate having a first and second waveguide arranged in spaced relationship to each other thereon, said substrate having an index of refraction n 1 , said first waveguide being of magneto-optic material having an index of refraction of n 4 >n 1 , said component having a magnetic field extending in the plane of said first waveguide and perpendicular to the direction of propagation of the waves therein.
Claim 8
Dependent Claim
63 words
A non-reciprocal component element according to claim 5, wherein said first and second waveguides are in a stacked relationship separated by a thin dielectric layer having an index of refraction less than the index of refraction of the first and second layers, and wherein the coupling zone is defined by a pair of spaced 3dB couplers engaging at least one of said waveguides.
Claim 9
Dependent Claim
55 words
A non-reciprocal component element according to claim 5, wherein the first and second waveguides are disposed on the surface of the substrate in close parallel arrangement and includes a pair of 3dB couplers extending across the pair of waveguides, said 3dB couplers being spaced from the first and second waveguides by a thin dielectric layer.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-11-09 | 1980-05-10 | 1980-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-09 | 1984-05-10 | 1984-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-09 | 1988-05-10 | 1988-11-09 | $7700.00 | Window Closed / Lapsed |