WAVELENGTH SELECTIVE LIGHT CROSS CONNECT DEVICE
First Claim
1. A wavelength selective light cross connect device for inputting wavelength division multiplexing optical signals (hereinafter referred to as WDM signals) of first to Nth channels, the signals each having wavelengths λ
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1 to λ
L (L is a natural number of 2 or more), to N input routes (N is a natural number of 2 or more) respectively, selecting signals of desired plural wavelength from each of the inputted WDM signals and outputting the selected signals from M output routes (M is t a natural number of 2 or more) comprising;
a first group of N route selection elements each having one input terminal and M output terminals, the first group of route selection elements selecting at last one route for the WDM signal inputted to each input route and outputting the signal from the M output terminal;
a wavelength selector for receiving N×
M outputs of said N route selection elements, selecting at last one optical signal of desired wavelengths from each of the inputted WDM signals and outputting the WDM signals of the same number as that of the inputted WDM signals; and
a second group of M route selection elements each having N input terminals and one output terminal, the second group of route selection elements selecting a route for the M WDM signals inputted to each input route and outputting the signal from the one output terminal.
1 Assignment
0 Petitions
Accused Products
Abstract
A wavelength selective light cross connect device 1A is configured of a route selector 10A including route selection elements 11-1 to 11-N, wavelength selector 20A, route selector 40A including route selection elements 41-1 to 41-M and controller 50A. The route selection elements 11-1 to 11-N select routes for WDM signals of N channels inputted to input routes Rin1 to RinN, and directs the WDM signals to the wavelength selector 20A. The wavelength selector 20A performs a selection operation to (N×M) WDM signals according to their wavelength, and outputs the signals. Wavelength selection elements 40-1 to 40-M receives different outputs obtained from the respective route selection elements via the wavelength selector 20A, selects routes and outputs the signals from output routes Rout1 to RoutM.
15 Citations
14 Claims
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1. A wavelength selective light cross connect device for inputting wavelength division multiplexing optical signals (hereinafter referred to as WDM signals) of first to Nth channels, the signals each having wavelengths λ
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1 to λ
L (L is a natural number of 2 or more), to N input routes (N is a natural number of 2 or more) respectively, selecting signals of desired plural wavelength from each of the inputted WDM signals and outputting the selected signals from M output routes (M is t a natural number of 2 or more) comprising;a first group of N route selection elements each having one input terminal and M output terminals, the first group of route selection elements selecting at last one route for the WDM signal inputted to each input route and outputting the signal from the M output terminal; a wavelength selector for receiving N×
M outputs of said N route selection elements, selecting at last one optical signal of desired wavelengths from each of the inputted WDM signals and outputting the WDM signals of the same number as that of the inputted WDM signals; anda second group of M route selection elements each having N input terminals and one output terminal, the second group of route selection elements selecting a route for the M WDM signals inputted to each input route and outputting the signal from the one output terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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1 to λ
Specification