US5287422A
Expired / Lapsed
US
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Integrated type optical node and optical information system using the same
Assignee: Canon Inc
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Filing: 1993-03-22
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Granted: 1994-02-15
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Expires: 2013-03-22
Abstract
Abstract This specification discloses an integrated type optical node comprising a substrate, a channel light waveguide formed on the substrate for connecting the transmission lines of an optical information system, an amplifying portion provided on the light waveguide for amplifying a light propagated through the waveguide, and a light branching-off portion provided on the light waveguide for coupling a light transmitter and/or a light receiver to the transmission lines. The specification also discloses an optical information system using such optical node.
Inventors
- 👤 Uuichi Handa
- 👤 Hidetoshi Nojiri
- 👤 Hajime Sakata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:42
CPC Classifications
H; H01; H01S; H01S5/00; H01S5/50; G; G02; G02B; G02B6/00; G02B6/10; G02B6/12; G02B6/12004; H01S5/02; H01S5/026; H01S5/0262; H01S5/0264; H01S5/10
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
80 words
An integrated type optical node comprising: a substrate; a light waveguide formed on said substrate formed on said substrate and coupled to transmission lines of an optical information system; an amplifying portion formed on a portion of said waveguide for amplifying light transmitted in said transmission lines; a laser light source integrated with said waveguide formed on said substrate; and a light branching-off portion for coupling light emitted from said laser light source to said transmission lines through said waveguide.
Claim 2
Dependent Claim
80 words
An integrated type optical node comprising: a substrate; a light waveguide formed on said substrate formed on said substrate and coupled to transmission lines of an optical information system; an amplifying portion formed on a portion of said waveguide for amplifying light transmitted in said transmission lines; a laser light source integrated with said waveguide formed on said substrate; and a light branching-off portion for coupling light emitted from said laser light source to said transmission lines through said waveguide.
Claim 3
Dependent Claim
43 words
An integrated type optical node according to claim 1, further comprising a photodetector integrated with said waveguide formed on said substrate, wherein said light branching-off portion couples a part of the light transmitted in the transmission lines to said photodetector through said waveguide.
Claim 4
Dependent Claim
22 words
An integrated type optical node according to claim 1, wherein said laser light source comprises a distributed Bragg reflection type laser diode.
Claim 5
Dependent Claim
23 words
An integrated type optical node according to claim 1, wherein said branching-off portion comprises two there-forked branch-off paths and two two-forked branch-off paths.
Claim 6
Dependent Claim
21 words
An integrated type optical node according to claim 1, wherein said branching-off portion comprises a V-shaped groove formed on said waveguide.
Claim 7
Dependent Claim
22 words
An integrated type optical node according to claim 1, wherein said branching-off portion comprises a dual grating structure formed on said waveguide.
Claim 8
Dependent Claim
22 words
An integrated type optical node according to claim 1, wherein said branching-off portion comprises a prism-like removed portion formed on said waveguide.
Claim 9
Dependent Claim
23 words
An integrated type optical node according to claim 1, wherein said branching-off portion comprises two T-shaped branching-off couplers of a directional coupler type.
Claim 10
Dependent Claim
25 words
An integrated type optical node according to claim 1, wherein said amplifying portion comprises a laser amplifier for effecting operation of a traveling wave type.
Claim 11
Dependent Claim
23 words
An integrated type optical node according to claim 1, further comprising an isolator provided between said branching-off portion and said laser light source.
Claim 12
Dependent Claim
110 words
An optical information system comprising: a plurality of integrated type optical nodes; and a plurality of transmission lines for effecting the transmission of light signals between said plurality of integrated type optical nodes; wherein each of said plurality of integrated type optical node comprises: a substrate; a light waveguide formed on said substrate and coupled to said transmission lines; an amplifying portion formed on a portion of said waveguide for amplifying light transmitted in said transmission lines; a laser light source integrated with said waveguide formed on said substrate; and a light branching-off portion for coupling light emitted from said laser light source to said transmission lines through said waveguide.
Claim 13
Dependent Claim
110 words
An optical information system comprising: a plurality of integrated type optical nodes; and a plurality of transmission lines for effecting the transmission of light signals between said plurality of integrated type optical nodes; wherein each of said plurality of integrated type optical node comprises: a substrate; a light waveguide formed on said substrate and coupled to said transmission lines; an amplifying portion formed on a portion of said waveguide for amplifying light transmitted in said transmission lines; a laser light source integrated with said waveguide formed on said substrate; and a light branching-off portion for coupling light emitted from said laser light source to said transmission lines through said waveguide.
Claim 14
Dependent Claim
46 words
An optical information system according to claim 11, wherein said integrated type optical node further comprises a photodetector integrated with said waveguide formed on said substrate and said branching-off portion couples a part of light transmitted in said transmission lines to said photodetector through said waveguide.
Claim 15
Dependent Claim
21 words
An optical information system according to claim 11, wherein said laser light source comprises a distributed Bragg reflection type laser diode.
Claim 16
Dependent Claim
23 words
An optical information system according to claim 11, wherein said light branching-off portion comprises two three-forked branch-off paths and two two-forked branch-off paths.
Claim 17
Dependent Claim
20 words
An optical information system according to claim 11, wherein said branching-off portion comprises a V-shaped groove formed on said waveguide.
Claim 18
Dependent Claim
21 words
An optical information system according to claim 11, wherein said branching-off portion comprises a dual grating structure formed on said waveguide.
Claim 19
Dependent Claim
21 words
An optical information system according to claim 11, wherein said branching-off portion comprises a prism-like removed portion formed on said waveguide.
Claim 20
Dependent Claim
22 words
An optical information system according to claim 11, wherein said branching-off portion comprises two T-shaped branching-off couplers of a directional coupler type.
Claim 21
Dependent Claim
24 words
An optical information system according to claim 11, wherein said amplifying portion comprises a laser amplifier for effecting operation of a traveling wave type.
Claim 22
Dependent Claim
22 words
An optical information system according to claim 11, further comprising an isolator provided between said branching-off portion and said laser light source.
Claim 23
Dependent Claim
74 words
An integrated type optical node comprising: a substrate; a light waveguide formed on said substrate and coupled to transmission lines of an information system; an amplifying portion formed on a portion of said waveguide for amplifying light transmitted in said transmission lines; a photodetector integrated with said waveguide formed on said substrate; and a light branching-off portion for coupling a part of light transmitted in said transmission lines to said photodetector through said waveguide.
Claim 24
Dependent Claim
74 words
An integrated type optical node comprising: a substrate; a light waveguide formed on said substrate and coupled to transmission lines of an information system; an amplifying portion formed on a portion of said waveguide for amplifying light transmitted in said transmission lines; a photodetector integrated with said waveguide formed on said substrate; and a light branching-off portion for coupling a part of light transmitted in said transmission lines to said photodetector through said waveguide.
Claim 25
Dependent Claim
24 words
An integrated type optical node according to claim 21, wherein said light branching-off portion comprises two three-forked branch-off paths and two two-forked branch-off paths.
Claim 26
Dependent Claim
21 words
An integrated type optical node according to claim 21, wherein said branching-off portion comprises a V-shaped groove formed on said waveguide.
Claim 27
Dependent Claim
22 words
An integrated type optical node according to claim 21, wherein said branching-off portion comprises a dual grating structure formed on said waveguide.
Claim 28
Dependent Claim
22 words
An integrated type optical node according to claim 21, wherein said branching-off portion comprises a prism-like removed portion formed on said waveguide.
Claim 29
Dependent Claim
23 words
An integrated type optical node according to claim 21, wherein said branching-off portion comprises two T-shaped branching-off couplers of a directional coupler type.
Claim 30
Dependent Claim
25 words
An integrated type optical node according to claim 21, wherein said amplifying portion comprises a laser amplifier for effecting operation of a traveling wave type.
Claim 31
Dependent Claim
113 words
An optical information system comprising: a plurality of integrated type optical nodes; and a plurality of transmission lines for effecting the transmission of light signals between said plurality of integrated type optical nodes; wherein each of said plurality of integrated type optical nodes comprises: a substrate; a light waveguide formed on said substrate and coupled to the transmission lines of the information system; an amplifying portion formed on a portion of said waveguide for amplifying light transmitted in said transmission lines; a photodetector integrated with said waveguide formed on said substrate; and a light branching-off portion for coupling a part of light transmitted in said transmission lines to said photodetector through said waveguide.
Claim 32
Dependent Claim
113 words
An optical information system comprising: a plurality of integrated type optical nodes; and a plurality of transmission lines for effecting the transmission of light signals between said plurality of integrated type optical nodes; wherein each of said plurality of integrated type optical nodes comprises: a substrate; a light waveguide formed on said substrate and coupled to the transmission lines of the information system; an amplifying portion formed on a portion of said waveguide for amplifying light transmitted in said transmission lines; a photodetector integrated with said waveguide formed on said substrate; and a light branching-off portion for coupling a part of light transmitted in said transmission lines to said photodetector through said waveguide.
Claim 33
Dependent Claim
23 words
An optical information system according to claim 28, wherein said light branching-off portion comprises two three-forked branch-off paths and two two-forked branch-off paths.
Claim 34
Dependent Claim
20 words
An optical information system according to claim 28, wherein said branching-off portion comprises a V-shaped groove formed on said waveguide.
Claim 35
Dependent Claim
21 words
An optical information system according to claim 28, wherein said branching-off portion comprises a dual granting structure formed on said waveguide.
Claim 36
Dependent Claim
21 words
An optical information system according to claim 28, wherein said branching-off portion comprises a prism-like removed portion formed on said waveguide.
Claim 37
Dependent Claim
22 words
An optical information system according to claim 28, wherein said branching-off portion comprises two T-shaped branching-off couplers of a directional coupler type.
Claim 38
Dependent Claim
24 words
An optical information system according to claim 28, wherein said amplifying portion comprises a laser amplifier for effecting operation of a traveling wave type.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-02-14 | 1997-08-16 | 1998-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-02-14 | 2001-08-16 | 2002-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-02-14 | 2005-08-16 | 2006-02-15 | $7700.00 | Window Closed / Lapsed |