Optical crossconnect apparatus and optical transmission system
First Claim
Patent Images
1. An optical crossconnect apparatus having one terminal connected to a transmission path from one optical transmission terminal station and other terminal connected to a transmission path from another optical transmission terminal station, and capable of switching said transmission paths when an optical signal is transmitted from one optical transmission terminal station to the other optical transmission terminal station and from the other optical transmission terminal to one optical transmission terminal station, comprising:
- a first optical signal switching means having “
M1 (M1 being an integer larger than, or equal to
2)”
number of ports and “
N1 (N1 being an integer larger than, or equal to
1)”
number of ports, through which the optical signal can pass;
a second optical signal switching means having “
M2 (M2 being larger than, or equal to
2)”
number of ports and “
N2 (N2 being an integer larger than, or equal to
1)”
number of ports, through which the optical signal can pass; and
“
L (L being an integer larger than, or equal to
1)”
number of optical signal repeaters, one end of which is connected to the “
N1”
number of ports of said first optical signal switching means, and the other end of which is connected to the “
N2”
number of ports of said second optical switching means;
wherein;
said “
N1”
number of the ports and said “
N2”
number of the ports are larger than said “
L”
number of the optical signal repeaters; and
also said “
M1”
number of the ports of said first optical signal switching means connected to said one terminal, and said “
M2”
number of the ports of said second optical signal switching means connected to said the other terminal are larger than, or equal to 2.
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Abstract
An optical crossconnect apparatus which includes one terminal connected to a transmission path from one optical transmission terminal station and another terminal connected to a transmission path from another optical transmission terminal station, a first optical signal switch having “M1” ports and “N1” ports, through which the optical signal can pass, a second optical signal switch having “M2” ports and “N2” ports, through which the optical signal can pass, and “L” optical signal repeaters, one end connected to the “N1” ports of the first optical signal switch, and the other end connected to the “N2” ports of the second optical switch. The “N1” and the “N2” ports are equal to “L” optical signal repeaters. The “M1” ports of the first optical signal switch connected to the one terminal, and the “M2” ports of the second optical signal switch connected to the other terminal are larger than, or equal to 2.
24 Citations
20 Claims
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1. An optical crossconnect apparatus having one terminal connected to a transmission path from one optical transmission terminal station and other terminal connected to a transmission path from another optical transmission terminal station, and capable of switching said transmission paths when an optical signal is transmitted from one optical transmission terminal station to the other optical transmission terminal station and from the other optical transmission terminal to one optical transmission terminal station, comprising:
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a first optical signal switching means having “
M1 (M1 being an integer larger than, or equal to
2)”
number of ports and “
N1 (N1 being an integer larger than, or equal to
1)”
number of ports, through which the optical signal can pass;
a second optical signal switching means having “
M2 (M2 being larger than, or equal to
2)”
number of ports and “
N2 (N2 being an integer larger than, or equal to
1)”
number of ports, through which the optical signal can pass; and
“
L (L being an integer larger than, or equal to
1)”
number of optical signal repeaters, one end of which is connected to the “
N1”
number of ports of said first optical signal switching means, and the other end of which is connected to the “
N2”
number of ports of said second optical switching means;
wherein;
said “
N1”
number of the ports and said “
N2”
number of the ports are larger than said “
L”
number of the optical signal repeaters; and
also said “
M1”
number of the ports of said first optical signal switching means connected to said one terminal, and said “
M2”
number of the ports of said second optical signal switching means connected to said the other terminal are larger than, or equal to 2.
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2. An optical crossconnect apparatus having one terminal connected to a transmission path from one optical transmission terminal station and other terminal connected to a transmission path from another optical transmission terminal station, and capable of switching said transmission paths when an optical signal is transmitted from one optical transmission terminal station to the other optical transmission terminal station and from the other optical transmission terminal to one optical transmission terminal station, comprising:
-
a first optical signal switching means having “
M1 (M1 being an integer larger than, or equal to
1)”
number of ports and “
N1 (N1 being an integer larger than, or equal to
2)”
number of ports, through which the optical signal can pass;
a second optical signal switching means having “
M2 (M2 being larger than, or equal to
1)”
number of ports and “
N2 (N2 being an integer larger than, or equal to
2)”
number of ports, through which the optical signal can pass; and
“
L (L being an integer larger than, or equal to
1)”
number of optical signal repeating means, one end of which is connected to the “
N1”
number of ports of said first optical signal switching means, and the other end of which is connected to the “
N2”
number of ports of said second optical switching means;
wherein;
said “
N1”
number of the ports and said “
N2”
number of the ports are larger than said “
L”
number of the optical signal repeaters; and
also said “
M1”
number of the ports of said first optical signal switching means connected to said one terminal, and said “
M2”
number of the ports of said second optical signal switching means connected to said the other terminal are larger than, or equal to 1.
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3. An optical crossconnect apparatus having one terminal connected to a transmission path from one optical transmission terminal station and other terminal connected to a transmission path from another optical transmission terminal station, and capable of switching said transmission paths when an optical signal is transmitted from one optical transmission terminal station to the other optical transmission terminal station and from the other optical transmission terminal to one optical transmission terminal station, comprising:
-
a first optical signal switching means having “
M (M being an integer larger than, or equal to
1)”
number of ports and “
2×
M”
number of ports, through which the optical signal can pass;
“
L (L being an integer larger than, or equal to
1)”
number of optical signal repeaters; and
a second optical signal switching means having “
N1 (N1 being larger than, or equal to 2L+M)”
number of ports and also “
N2 (N2 being larger than, or equal to
1)”
number of ports;
wherein;
M number of said ports among the (2×
M) ports of said first optical signal switching means, and also (2 ×
L) number of said ports owned by said L number of optical signal repeaters are connected to the N1 number of the ports of said second optical switching means. - View Dependent Claims (4, 5, 6, 7, 8)
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9. An optical crossconnect apparatus having one terminal connected to a transmission path from one optical transmission terminal station and other terminal connected to a transmission path from another optical transmission terminal station, and capable of switching said transmission paths when an optical signal is transmitted from one optical transmission terminal station to the other optical transmission terminal station and from the other optical transmission terminal to one optical transmission terminal station, comprising:
-
an optical signal switching means having an optical signal repeater, a first port connected thereto via said optical signal repeater on one terminal thereof, and a second port connected thereto via said optical signal repeating means on the other terminal thereof;
an optical signal monitoring means connected at least between said one terminal and said first port of said optical signal switching means and between said the other terminal and said second port of said optical signal switching means, for monitoring a transmission condition of the optical signal; and
an optical signal supplying means connected at least between said other terminal and said second port of said optical signal switching means and between said one terminal and said first port of said optical signal switching means, for supplying a monitoring optical signal derived from a signal source to said the other transmission path. - View Dependent Claims (10)
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11. An optical crossconnect apparatus having one terminal connected to a transmission path from one optical transmission terminal station and other terminal connected to a transmission path from another optical transmission terminal station, and capable of switching said transmission paths when an optical signal is transmitted from one optical transmission terminal station to the other optical transmission terminal station and from the other optical transmission terminal to one optical transmission terminal station, comprising:
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an optical signal switching means having an optical signal repeater, a first port connected thereto via said optical signal repeating means on one terminal thereof, and a second port connected thereto via said optical signal repeater on the other terminal thereof;
a first optical signal monitoring means connected between said one terminal and said first port of said optical signal switching means, for monitoring a transmission condition of the optical signal; and
a second optical signal monitoring means connected between the other terminal and said second port of said optical signal switching means, for monitoring a transmission condition of the optical signal. - View Dependent Claims (12, 14, 15, 16, 18)
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13. An optical crossconnect apparatus having one terminal connected to a transmission path from one optical transmission terminal station and other terminal connected to a transmission path from another optical transmission terminal station, and capable of switching said transmission paths when an optical signal is transmitted from one optical transmission terminal station to the other optical transmission terminal station and from the other optical transmission terminal to one optical transmission terminal station, comprising:
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a first optical signal switching means used in a normal signal transmission, including an optical signal repeater, and also having a first port connected via said optical signal repeater to one terminal thereof and a second port connected via said optical signal repeater to the other terminal thereof;
a second optical signal switching means used in a protection signal transmission, including an optical signal repeater, and also having a third port connected via said optical signal repeater to one terminal thereof and a fourth port connected via said optical signal repeater to the other terminal thereof;
a first optical signal selecting switch, one terminal of which is connected to said first port and said second port, and the other terminal of which is connected to said one terminal thereof and is connected to an optical signal supplying means for supplying an optical monitoring signal used to monitor operations of said first and second optical signal switching means, for selecting one of said optical transmission signal and said optical monitoring signal to be supplied to one of said first and second optical signal switching means; and
a second optical signal selecting switch, one terminal of which is connected to said second port and said fourth port, and the other terminal of which is connected to said other terminal thereof and is connected to an optical signal supplying means for supplying an optical monitoring signal used to monitor operations of said first and second optical signal switching means, for selecting one of said optical transmission signal and said optical monitoring signal outputted from one of said first and second optical signal switching means.
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17. An optical crossconnect apparatus having one terminal connected to a transmission path from one optical transmission terminal station and other terminal connected to a transmission path from another optical transmission terminal station, and capable of switching said transmission paths when an optical signal is transmitted from one optical transmission terminal station to the other optical transmission terminal station and from the other optical transmission terminal to one optical transmission terminal station, comprising:
-
a first optical signal switching means having “
M1 (M1 being an integer larger than, or equal to
2)”
number of ports and “
N1 (N1 being an integer larger than, or equal to
1)”
number of ports, through which the optical signal can pass;
a second optical signal switching means having “
M2 (M2 being larger than, or equal to
2)”
number of ports and “
N2 (N2 being an integer larger than, or equal to
1)”
number of ports, through which the optical signal can pass; and
“
L (L being an integer larger than, or equal to
1)”
number of optical signal repeaters, one end of which is connected to the “
N1”
number of ports of said first optical signal switching means, and the other end of which is connected to the “
N2”
number of ports of said second optical switching means;
in which said “
L”
number of the optical signal repeaters are larger than, or equal to 1;
said “
N1”
number of the ports and said “
N2”
number of the ports are larger than said “
L”
number of the optical signal repeaters; and
also said “
M1”
number of the ports of said first optical signal switching means connected to said one terminal, and said “
M2”
number of the ports of said second optical signal switching means connected to said the other terminal are larger than, or equal to 2;
an optical signal monitoring means connected at least either between said one terminal and said “
M1 (M1 being an integer larger than, or equal to
2)”
number of the ports of said first optical signal switching means or between said other terminal and said “
M2 (M2 being integer larger than, or equal to
2)”
number of the ports of said second optical signal switching means, for monitoring a transmission condition of the optical signal; and
an optical signal supplying means connected at least either between said one terminal and said “
M1 (M1 being an integer larger than, or equal to
2)”
number of the ports of said first optical signal switching means or between said other terminal and said “
M2 (M2 being integer larger than, or equal to
2)”
number of the ports of said second optical signal switching means, for supplying a monitoring optical signal derived from a signal source to said another transmission path.
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19. An optical transmission system constituted by providing a plurality of optical transmitters/receivers interconnected by optical transmission path, comprising:
-
a plurality of optical crossconnect apparatuses including;
a plurality of optical transmitters/receivers;
a first optical signal switching means connected to the respective optical transmitters/receivers, and having “
M1”
number of ports and “
N1”
number of ports, through which an optical signal can pass;
a second optical signal switching means having “
M2”
number of ports and “
N2”
number of ports, through which an optical signal can pass;
“
L (L being an integer larger than, or equal to
1)”
number of optical signal repeaters, one end of which is connected to one of the “
N1”
number of ports of said first optical signal switching means, and the other end of which is connected to one of the “
N2”
number of ports of said second optical switching means;
in which said “
L”
number of the optical signal repeater are larger than, or equal to 1;
said “
N1”
number of the ports and said “
N2”
number of the ports are equal to at least said “
L”
number of the optical signal repeating means; and
also said “
M1”
number of the ports of said first optical signal switching means connected to said one terminal, and said “
M2”
number of the ports of said second optical signal switching means connected to said the other terminal are larger than, or equal to 2; and
an optical transmission path for connecting each of said optical crossconnect apparatuses;
wherebysaid optical transmitters/receivers communicate the optical transmission signal through the optical transmission paths except for an optical transmission path where a failure happens to occur, depending upon the occurrence of the failure.
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20. An optical transmission system constituted by providing a plurality of optical transmitters/receivers in an optical network constructed of an optical transmission path, comprising:
-
a plurality of optical crossconnect apparatuses including;
a plurality of optical transmitters/receivers;
a first optical signal switching means having “
M1 (M1 being an integer larger than, or equal to
2)”
number of ports and “
N1 (N1 being an integer larger than, or equal to
1)”
number of ports, through which the optical signal can pass;
a second optical signal switching means having “
M2 (M2 being larger than, or equal to
2)”
number of ports and “
N2 (N2 being an integer larger than, or equal to
1)”
number of ports, through which the optical signal can pass; and
“
L (L being an integer larger than, or equal to
1)”
number of optical signal repeating means, one end of which is connected to the “
N1”
number of ports of said first optical signal switching means, and the other end of which is connected to the “
N2”
number of ports of said second optical switching means;
in which said “
L”
number of the optical signal repeater are larger than, or equal to 1;
said “
N1”
number of the ports and said “
N2”
number of the ports are equal to at least said “
L”
number of the optical signal repeaters; and
also said “
M1”
number of the ports of said first optical signal switching means connected to said one terminal, and said “
M2”
number of the ports of said second optical signal switching means connected to said the other terminal are larger than, or equal to 2;
an optical signal monitoring means connected at least either between said one terminal and said “
M1 (M1 being an integer larger than, or equal to
2)”
number of the ports of said first optical signal switching means or between said other terminal and said “
M2 (M2 being integer larger than, or equal to
2)”
number of the ports of said second optical signal switching means, for monitoring a transmission condition of the optical signal; and
an optical signal supplying means connected at least either between said one terminal and said “
M1 (M1 being an integer larger than, or equal to
2)”
number of the ports of said first optical signal switching means or between said other terminal and said “
M2 (M2 being integer larger than, or equal to
2)”
number of the ports of said second optical signal switching means, for supplying a monitoring optical signal derived from a signal source to said another transmission path;
an optical transmission path for connecting each of said optical crossconnect apparatuses;
wherebysaid optical transmitters/receivers communicate the optical transmission signal through the optical transmission paths except for an optical transmission path where a failure happens to occur, depending upon the occurrence of the failure.
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Specification
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Current AssigneeHirohisa Sano, Masahiro Takatori, Shigeki Kitajima, Shoichi Hanatani, Tatsuo Kanetake, Yasuyuki Fukashiro, Yukio Hayashi
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Original AssigneeHirohisa Sano, Masahiro Takatori, Shigeki Kitajima, Shoichi Hanatani, Tatsuo Kanetake, Yasuyuki Fukashiro, Yukio Hayashi
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InventorsHayashi, Yukio, Fukashiro, Yasuyuki, Takatori, Masahiro, Kanetake, Tatsuo, Hanatani, Shoichi, Sano, Hirohisa, Kitajima, Shigeki
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Granted Patent
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Time in Patent OfficeDays
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Field of Search
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US Class Current398/82
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CPC Class CodesH04B 10/032 using working and protectio...H04Q 11/0001 using optical switchingH04Q 11/0005 Switch and router aspectsH04Q 11/0062 Network aspectsH04Q 2011/0024 using space switchingH04Q 2011/0043 Fault toleranceH04Q 2011/0058 Crossbar; MatrixH04Q 2011/0081 Fault tolerance; Redundanc...
