OPTICAL DROP APPARATUS, OPTICAL ADD APPARATUS, AND OPTICAL ADD/DROP APPARATUS
First Claim
1. An optical drop apparatus comprising a plurality of routes and comprising coherent transponders capable of simultaneously receiving optical signals with N wavelengths (N is an integer of 2 or more), comprising:
- wavelength separation units corresponding to the respective routes, each of which divides a wavelength multiplexed optical signal of one route into M wavelength groups, each of which includes N wavelengths (M is an integer satisfying N×
M=the number of multiplexed wavelengths of the wavelength multiplexed optical signal); and
M wavelength separation blocks, each of which is input with a plurality of the wavelength groups divided by the different wavelength separation units and outputs optical signals having any one or a plurality of wavelengths included in the input wavelength groups to N coherent transponders.
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Accused Products
Abstract
Provided is an optical apparatus including: wavelength separation units corresponding to the respective routes, each of which divides a wavelength multiplexed optical signal of one route into M wavelength groups (M is an integer satisfying N×M=the number of multiplexed wavelengths of the wavelength multiplexed optical signal of one route), each of which includes N wavelengths (N is an integer of 2 or more); and M wavelength separation blocks, each of which is input with a plurality of the wavelength groups divided by the different wavelength separation units and outputs optical signals with any one or a plurality of wavelengths included in the input wavelength groups to N coherent transponders. Accordingly, it is possible to flexibly adapt to extension in wavelength or extension in route in units of a wavelength separation block and/or wavelength multiplexing block.
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Citations
15 Claims
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1. An optical drop apparatus comprising a plurality of routes and comprising coherent transponders capable of simultaneously receiving optical signals with N wavelengths (N is an integer of 2 or more), comprising:
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wavelength separation units corresponding to the respective routes, each of which divides a wavelength multiplexed optical signal of one route into M wavelength groups, each of which includes N wavelengths (M is an integer satisfying N×
M=the number of multiplexed wavelengths of the wavelength multiplexed optical signal); andM wavelength separation blocks, each of which is input with a plurality of the wavelength groups divided by the different wavelength separation units and outputs optical signals having any one or a plurality of wavelengths included in the input wavelength groups to N coherent transponders. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An optical drop apparatus comprising a plurality of routes and comprising coherent transponders capable of simultaneously receiving optical signals with N wavelengths (N is an integer of 2 or more), comprising:
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wavelength separation units corresponding to the respective routes, each of which M-branches a wavelength multiplexed optical signal of one route (M is an integer satisfying N×
M=the number of multiplexed wavelengths of the wavelength multiplexed optical signal); andM wavelength separation blocks, each of which is input with optical signals branched by the different wavelength separation units and selectively outputs the input optical signals to N coherent transponders in units of M wavelength groups, each of which includes N wavelengths.
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8. An optical add apparatus having a plurality of routes, comprising:
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M wavelength multiplexing blocks (M is an integer satisfying N×
M=the number of multiplexed wavelengths of wavelength multiplexed optical signals of one route), each of which wavelength-multiplexes optical signals transmitted from N coherent transponders (N is an integer of 2 or more); andwavelength selection switches, each of which is installed corresponding to each route to selectively output wavelength multiplexed optical signals transmitted from different wavelength multiplexing blocks to the corresponding route in units of wavelength. - View Dependent Claims (9, 10, 11, 12, 13)
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14. An optical add apparatus having a plurality of routes, comprising:
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wavelength multiplexing units, each of which is installed corresponding to each route to multiplex input optical signals and to output the multiplexed optical signal to the corresponding route; and M wavelength multiplexing blocks, each of which selectively outputs optical signals transmitted from N coherent transponders (N is an integer of 2 or more) to the wavelength multiplexing units of different routes in units of M wavelength groups, each of which includes N wavelengths, (M is an integer satisfying N×
M=the number of multiplexed wavelengths of a wavelength multiplexed optical signal of one route).
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15. An optical add/drop apparatus comprising a plurality of routes and comprising coherent transponders capable of simultaneously receiving optical signals with N wavelengths (N is an integer of 2 or more), comprising:
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wavelength separation units corresponding to the respective routes, each of which divides a wavelength multiplexed optical signal of one route into M wavelength groups, each of which includes N wavelengths, (M is an integer satisfying N×
M=the number of multiplexed wavelengths of the wavelength multiplexed optical signal);M wavelength separation blocks, each of which is input with a plurality of the wavelength groups divided by the different wavelength separation units and outputs optical signals having any one or a plurality of wavelengths included in the input wavelength groups to N coherent transponders; M wavelength multiplexing blocks, each of which wavelength-multiplexes optical signals transmitted from different N coherent transponders; and wavelength selection switches, each of which is installed corresponding to each route to selectively output wavelength multiplexed optical signals transmitted from different wavelength multiplexing blocks to the corresponding route in units of wavelength.
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Specification