Patent EP0362789A2 successfully refreshed from Google Patents.
EP0362789A2
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EP
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Integrated type optical node and optical information system using the same
Assignee: Canon Inc
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Filing: 1989-10-03
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Granted: —
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Expires: 2009-10-03
Abstract
Abstract This specification discloses an integrated type optical node (3) comprising a substrate, a channel light waveguide formed on the substrate for connecting the transmission lines (1,2) of an optical information system, an amplifying portion (8) 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 (7) and/or a light receiver (6) to the transmission lines (1,2). The specification also discloses an optical information system using such optical node.
Inventors
- 👤 Yuichi Handa
- 👤 Hidetoshi Nojiri
- 👤 Hajime Sakata
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 11:48
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: 35
Claim 1
Independent Claim
65 words
An integrated type optical node comprising: a substrate; a channel light waveguide formed on said substrate for connecting the transmission lines of an optical information system; an amplifying portion provided on said light waveguide for amplifying a light propagated through said waveguide; and a light branching-off portion provided on said light waveguide for coupling a light transmitter and/or a light receiver to said transmission lines.
Claim 2
Dependent Claim
65 words
An integrated type optical node comprising: a substrate; a channel light waveguide formed on said substrate for connecting the transmission lines of an optical information system; an amplifying portion provided on said light waveguide for amplifying a light propagated through said waveguide; and a light branching-off portion provided on said light waveguide for coupling a light transmitter and/or a light receiver to said transmission lines.
Claim 3
Dependent Claim
64 words
An integrated type optical node according to Claim 1, wherein said light branching-off portion comprises two three-forked branch-off paths each branching-off two further channel light waveguides from the both sides of said channel light waveguide, and two two-forked branch-off paths for coupling each two channel light waveguides branching off from each of said three-forked branch-off paths to said light transmitter and said light receiver.
Claim 4
Dependent Claim
50 words
An integrated type optical node according to Claim 1, wherein said light branching-off portion comprises another channel light waveguide intersecting said channel light waveguide and having its opposite ends coupled to said light transmitter and said light receiver, respectively, and a V-shaped groove formed on the portion of intersection therebetween.
Claim 5
Dependent Claim
51 words
An integrated type optical node according to Claim 1, wherein said light branching-off portion comprises another channel light waveguide intersecting said channel light waveguide and having its opposite ends coupled to said light transmitter and said light receiver, respectively, and a dual grating structure formed on the portion of intersection therebetween.
Claim 6
Dependent Claim
61 words
An integrated type optical node according to Claim 1, wherein said light branching-off portion comprises two further channel light waveguides each having one end thereof coupled to said channel light waveguide and having the other end coupled to said light transmitter and said light receiver, and a prism-like removed portion formed in the portion of coupling between said channel light waveguides.
Claim 7
Dependent Claim
24 words
An integrated type optical node according to Claim 1, wherein said light branching-off portion comprises two T-shaped branching-off couplers of the directional coupler type.
Claim 8
Dependent Claim
26 words
An integrated type optical node according to Claim 1, wherein said amplifying portion comprises a laser amplifier which performs an operation of the travelling wave type.
Claim 9
Dependent Claim
28 words
An integrated type optical node according to Claim 1, further comprising an antireflection film applied to the light entrance and exit end surfaces of said channel light waveguide.
Claim 10
Dependent Claim
28 words
An integrated type optical node according to Claim 1, further comprising an isolator provided in an optical path leading from said light transmitter to said light branching-off portion.
Claim 11
Dependent Claim
76 words
An integrated type optical node comprising: a substrate; a channel light waveguide formed on said substrate for connecting the transmission lines of an optical information system; an amplifying portion provided on said light waveguide for amplifying a light propagated through said waveguide; a light transmitter and/or a light receiver provided on said substrate; and a light branching-off portion provided in said light waveguide and coupling said light transmitter and/or said light receiver to said transmission lines.
Claim 12
Dependent Claim
76 words
An integrated type optical node comprising: a substrate; a channel light waveguide formed on said substrate for connecting the transmission lines of an optical information system; an amplifying portion provided on said light waveguide for amplifying a light propagated through said waveguide; a light transmitter and/or a light receiver provided on said substrate; and a light branching-off portion provided in said light waveguide and coupling said light transmitter and/or said light receiver to said transmission lines.
Claim 13
Dependent Claim
22 words
An integrated type optical node according to Claim 10, wherein said light transmitter transmits a plurality of light signals of different wavelengths.
Claim 14
Dependent Claim
22 words
An integrated type optical node according to Claim 10, wherein said light receiver receives a plurality of light signals of different wavelengths.
Claim 15
Dependent Claim
62 words
An integrated type optical node according to Claim 10, wherein said light branching-off portion comprises two three-forked branch-off paths each branching-off two further channel light waveguides from the both sides of said channel light waveguide, and two two-forked branch-off paths coupling each two channel light waveguides branching-off from each of said three-forked branch-off paths to said light transmitter and said light receiver.
Claim 16
Dependent Claim
50 words
An integrated type optical node according to Claim 10, wherein said light branching-off portion comprises another channel light waveguide intersecting said channel light waveguide and having its opposite ends coupled to said light transmitter and said light receiver, respectively, and a V-shaped groove formed on the portion of intersection therebetween.
Claim 17
Dependent Claim
51 words
An integrated type optical node according to Claim 10, wherein said light branching-off portion comprises another channel light waveguide intersecting said channel light waveguide and having its opposite ends coupled to said light transmitter and said light receiver, respectively, and a dual grating structure formed on the portion of intersection therebetween.
Claim 18
Dependent Claim
61 words
An integrated type optical node according to Claim 10, wherein said light branching-off portion comprises two further channel light waveguides each having one end thereof coupled to said channel light waveguide and having the other end coupled to said light transmitter and said light receiver, and a prism-like removed portion formed in the portion of coupling between said channel light waveguides.
Claim 19
Dependent Claim
24 words
An integrated type optical node according to Claim 10, wherein said light branching-off portion comprises two T-shaped branching-off couplers of the directional coupler type.
Claim 20
Dependent Claim
26 words
An integrated type optical node according to Claim 10, wherein said amplifying portion comprises a laser amplifier which performs an operation of the travelling wave type.
Claim 21
Dependent Claim
28 words
An integrated type optical node according to Claim 10, further comprising an antireflection film applied to the light entrance and exit end surfaces of said channel light waveguide.
Claim 22
Dependent Claim
28 words
An integrated type optical node according to Claim 10, further comprising an isolator provided in an optical path leading from said light transmitter to said light branching-off portion.
Claim 23
Dependent Claim
110 words
An optical information system comprising: a plurality of ends including a light transmitter and a light receiver; a plurality of transmission lines for effecting the transmission of light signals between said ends; and a plurality of integrated type optical nodes for connecting said transmission lines and said ends together, each of said optical nodes comprising: a substrate; a channel light waveguide formed on said substrate and connecting said transmission lines together; an amplifying portion provided on said light waveguide for amplifying a light propagated through said waveguide; and a light branching-off portion provided on said light waveguide and coupling said light transmitter and said light receiver to said transmission lines.
Claim 24
Dependent Claim
110 words
An optical information system comprising: a plurality of ends including a light transmitter and a light receiver; a plurality of transmission lines for effecting the transmission of light signals between said ends; and a plurality of integrated type optical nodes for connecting said transmission lines and said ends together, each of said optical nodes comprising: a substrate; a channel light waveguide formed on said substrate and connecting said transmission lines together; an amplifying portion provided on said light waveguide for amplifying a light propagated through said waveguide; and a light branching-off portion provided on said light waveguide and coupling said light transmitter and said light receiver to said transmission lines.
Claim 25
Dependent Claim
27 words
An optical information system according to Claim 21, wherein said light transmitter and said light receiver are formed on the same substrate as said channel light waveguide.
Claim 26
Dependent Claim
21 words
An optical information system according to Claim 21, wherein said light transmitter transmits a plurality of light signals of different wavelengths.
Claim 27
Dependent Claim
21 words
An optical information system according to Claim 21, wherein said light receiver receives a plurality of light signals of different wavelengths.
Claim 28
Dependent Claim
61 words
An optical information system according to Claim 21, wherein said light branching-off portion comprises two three-forked branch-off paths each branching-off two further channel light waveguides from the both sides of said channel light waveguide, and two two-forked branch-off paths coupling each two channel light waveguides branching-off from each of said three-forked branch-off paths to said light transmitter and said light receiver.
Claim 29
Dependent Claim
49 words
An optical information system according to Claim 21, wherein said light branching-off portion comprises another channel light waveguide intersecting said channel light waveguide and having its opposite ends coupled to said light transmitter and said light receiver, respectively, and a V-shaped groove formed on the portion of intersection therebetween.
Claim 30
Dependent Claim
50 words
An optical information system according to Claim 21, wherein said light branching-off portion comprises another channel light waveguide intersecting said channel light waveguide and having its opposite ends coupled to said light transmitter and said light receiver, respectively, and a dual grating structure formed on the portion of intersection therebetween.
Claim 31
Dependent Claim
60 words
An optical information system according to Claim 21, wherein said light branching-off portion comprises two further channel light waveguides each having one end thereof coupled to said channel light waveguide and having the other end coupled to said light transmitter and said light receiver, and a prism-like removed portion formed in the portion of coupling between said channel light waveguides.
Claim 32
Dependent Claim
23 words
An optical information system according to Claim 21, wherein said light branching-off portion comprises two T-shaped branching-off couplers of the directional coupler type.
Claim 33
Dependent Claim
25 words
An optical information system according to Claim 21, wherein said amplifying portion comprises a laser amplifier which performs an operation of the travelling wave type.
Claim 34
Dependent Claim
27 words
An optical information system according to Claim 21, further comprising an antireflection film applied to the light entrance and exit end surfaces of said channel light waveguide.
Claim 35
Dependent Claim
27 words
An optical information system according to Claim 21, further comprising an isolator provided in an optical path leading from said light transmitter to said light branching-off portion.
References Cited (Backward Citations)
No citation records indexed.
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