OPTICAL SWITCH, OPTICAL TRANSMISSION DEVICE, AND OPTICAL SWITCHING METHOD
First Claim
1. An optical switch, comprising:
- a unit optical switch inputting n optical signals and outputting n optical signals;
an optical splitter inputting a single optical signal, splitting the single optical signal into k optical signals, and outputting the k optical signals; and
an optical selector inputting m optical signals and outputting a single optical signal,wherein the optical splitter comprises m×
n pieces,the unit optical switch comprises m×
k pieces,the optical selector comprises n×
k pieces,(k×
(m×
n)) outputs of the optical splitter correspond to (n×
(m×
k)) inputs of the unit optical switch,(n×
(m×
k)) outputs of the unit optical switch correspond to (m×
(n×
k)) inputs of the optical selector, and(n×
m) optical signals inputted into the optical splitter are output through the (m×
k) unit optical switch from the optical selector as (n×
k) optical signals.
1 Assignment
0 Petitions
Accused Products
Abstract
It is difficult to increase the number of inputs and outputs of an optical switch supporting CDC functions, therefore, an optical switch according to an exemplary aspect of the present invention includes a unit optical switch inputting n optical signals and outputting n optical signals; an optical splitter inputting a single optical signal, splitting the single optical signal into k optical signals, and outputting the k optical signals; and an optical selector inputting m optical signals and outputting a single optical signal, wherein the optical splitter includes m×n pieces, the unit optical switch includes m×k pieces, the optical selector includes n×k pieces, (k×(m×n)) outputs of the optical splitter correspond to (n×(m×k)) inputs of the unit optical switch, (n×(m×k)) outputs of the unit optical switch correspond to (m×(n×k)) inputs of the optical selector, and (n×m) optical signals inputted into the optical splitter are output through the (m×k) unit optical switch from the optical selector as (n×k) optical signals.
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Citations
20 Claims
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1. An optical switch, comprising:
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a unit optical switch inputting n optical signals and outputting n optical signals; an optical splitter inputting a single optical signal, splitting the single optical signal into k optical signals, and outputting the k optical signals; and an optical selector inputting m optical signals and outputting a single optical signal, wherein the optical splitter comprises m×
n pieces,the unit optical switch comprises m×
k pieces,the optical selector comprises n×
k pieces,(k×
(m×
n)) outputs of the optical splitter correspond to (n×
(m×
k)) inputs of the unit optical switch,(n×
(m×
k)) outputs of the unit optical switch correspond to (m×
(n×
k)) inputs of the optical selector, and(n×
m) optical signals inputted into the optical splitter are output through the (m×
k) unit optical switch from the optical selector as (n×
k) optical signals. - View Dependent Claims (4, 5, 7, 8, 16, 17)
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2. An optical switch, comprising:
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an optical splitter inputting a single optical signal, splitting the single optical signal into k optical signals, and outputting the k optical signals; and a sub optical switch inputting (m×
n) optical signals and outputting n optical signals,wherein the optical splitter comprises (m×
n) pieces,the sub optical switch comprises k pieces, k outputs of one of the optical splitter correspond to each input of k sub optical switch, (m×
n) inputs of one of the sub optical switch correspond to each output from (m×
n) optical splitter, and (n×
m) optical signals inputted into the optical splitter are output from the sub optical switch as (n×
k) optical signals. - View Dependent Claims (3, 6, 11, 12, 13, 14, 15, 18, 19, 20)
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9. An optical switching method, comprising:
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outputting (k×
(m×
n)) optical signals to an input of (m×
n) optical signals by performing a step, by m×
n times in parallel, of inputting a single optical signal, splitting the single optical signal into k optical signals, and outputting the k optical signals;outputting (n×
(m×
k)) optical signals by performing a step, to the (k×
(m×
n)) optical signals by (m×
k) times in parallel, of inputting n optical signals and outputting n optical signals; andoutputting (n×
k) optical signals by performing a step, to the (n×
(m×
k)) optical signals by (n×
k) times in parallel, of inputting m optical signals and outputting one optical signal.
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10. (canceled)
Specification
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- Resources
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Current AssigneeNEC Corporation
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Original AssigneeNEC Corporation
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InventorsTakeshita, Hitoshi, Ikematsu, Ryuichi, Tajima, Akio
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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 Current1/1
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CPC Class CodesH04J 14/0212 using optical switches or w...H04J 14/02122 Colourless, directionless o...H04Q 11/0005 Switch and router aspectsH04Q 2011/0015 using splitting combiningH04Q 2011/0016 using wavelength multiplexi...
