US4252402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for connecting a peripheral unit to an optical bus-line
Assignee: Thales SA
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Filing: 1978-11-27
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Granted: 1981-02-24
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Expires: 1998-11-27
Abstract
Abstract A device for connecting a peripheral unit to an optical bus-line which comprises a substrate onto which are integrated a first optical waveguide for being inserted in the path of the bus-line, a second optical waveguide for being connected to the emitting circuit of the peripheral unit, a third optical waveguide for being connected to the receiving circuit of the peripheral unit, and three couplers for intercoupling these waveguides. A plurality of connections related to the peripheral unit are provided for controlling the couplers in order to control the emission or the reception of information on or from the bus-line.
Inventors
- 👤 Claude Puech
- 👤 Michel Papuchon
- 👤 Michel Werner
- 👤 Brigitte Puech
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:41
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/42; G02B6/4201; G02B6/4246
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
142 words
An optical connecting device for a bus line which propagates light signals in two directions, which comprises: a substrate; a first optical waveguide integrated onto said substrate for being inserted along the path of said bus line for propagating light signals in two directions; a second optical waveguide integrated onto said substrate; a third optical waveguide integrated onto said substrate; means for emitting in said second optical waveguide first optical signals; means for receiving from said third optical waveguide second optical signals; first means integrated onto said substrate for coupling said first and second waveguides; second means integrated onto said substrate for coupling said first and third waveguides; third means integrated onto said substrate for coupling said second and third waveguides; and means for controlling said first, second and third coupling means so as to control and vary the percentage of crossing.
Claim 2
Dependent Claim
142 words
An optical connecting device for a bus line which propagates light signals in two directions, which comprises: a substrate; a first optical waveguide integrated onto said substrate for being inserted along the path of said bus line for propagating light signals in two directions; a second optical waveguide integrated onto said substrate; a third optical waveguide integrated onto said substrate; means for emitting in said second optical waveguide first optical signals; means for receiving from said third optical waveguide second optical signals; first means integrated onto said substrate for coupling said first and second waveguides; second means integrated onto said substrate for coupling said first and third waveguides; third means integrated onto said substrate for coupling said second and third waveguides; and means for controlling said first, second and third coupling means so as to control and vary the percentage of crossing.
Claim 3
Dependent Claim
179 words
A device as claimed in claim 1, wherein: said first coupling means comprise a first rectilinear part of said first waveguide, a first rectilinear part of said second waveguide being adjacent to said first part of the first waveguide, a first electrode covering said first part of the first waveguide, and a second and a third electrode covering said first part of the second waveguide; said second coupling means comprise a second rectilinear part of said first waveguide, a first rectilinear part of said third waveguide being adjacent to said second part of the first waveguide, a fourth electrode covering said second part of the first waveguide, and a fifth and sixth electrode covering said first part of the third waveguide; and said third coupling means comprise a second rectilinear part of said second waveguide, a second rectilinear part of said third waveguide being adjacent to said second part of the second waveguide, a seventh electrode covering said second part of the second waveguide, and an eighth and a ninth electrode covering said second part of the third waveguide.
Claim 4
Dependent Claim
26 words
A device as claimed in claim 2, wherein said controlling means comprise a plurality of connections for applying to said first to ninth electrodes control voltages.
Claim 5
Dependent Claim
29 words
A device as claimed in claim 3, wherein said emitting means comprise a light-emitting diode and a first optical fiber for coupling said light-emitting diode and said second waveguide.
Claim 6
Dependent Claim
27 words
A device as claimed in claim 4, wherein said receiving means comprise a photo-diode and a second optical fiber for coupling said photo-diode and said third waveguide.
Claim 7
Dependent Claim
30 words
A device as claimed in claim 3, wherein said emitting means comprise a laser diode integrated onto said substrate, and said receiving means comprise a photodiode integrated onto said substrate.
References Cited (Backward Citations)
FR2042832A5
Cited
US3716804A
Cited
US4026632A
Cited
DE2712054A1
Cited
FR2345739A1
Cited
US4162460A
Cited
US4166946A
Cited
US4089584A
Cited
US4146297A
Cited
US4161650A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-02-24 | 1984-08-25 | 1985-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-24 | 1988-08-25 | 1989-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-24 | 1992-08-25 | 1993-02-24 | $7700.00 | Window Closed / Lapsed |