DISTRIBUTED WAVE DIVISION MULTIPLEXING SYSTEMS
First Claim
1. A distributed wavelength division multiplexer architecture comprising:
- a first multiplexing device including a first wave division multiplexer, the first multiplexing device having an input and a plurality of first outputs, the first multiplexing device having a first filter criteria that assigns a respective set of subscriber wavelengths to each first output, each set of subscriber wavelengths being different from each other set of subscriber wavelengths; and
second wavelength division multiplexers having second inputs coupled to the first outputs of the first multiplexing device, the second wavelength division multiplexers each including a plurality of second outputs and a second filter criteria that assigns a subscriber wavelength from each different set of subscriber wavelengths to each of the second outputs.
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Abstract
A distributed wave division multiplexing system includes a first multiplexing device and multiple second multiplexing devices. The first multiplexing device separates Y number of subscriber signals carried over an input line onto X number of channel lines by wavelength. Each of the second multiplexing devices is coupled to the first multiplexing device by one of the channel lines. Each second multiplexing device separates X number of subscriber signals carried over the respective channel line onto Y number of output lines by wavelength. Each of the Y number of wavelengths subscriber signals carried over a first of the channel fibers is associated with a different one of the output fibers of the respective second multiplexing device. Each of the X number of subscriber signals carried over a first of the output fibers of each second multiplexing device is associated with a different one of the channel fibers.
44 Citations
32 Claims
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1. A distributed wavelength division multiplexer architecture comprising:
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a first multiplexing device including a first wave division multiplexer, the first multiplexing device having an input and a plurality of first outputs, the first multiplexing device having a first filter criteria that assigns a respective set of subscriber wavelengths to each first output, each set of subscriber wavelengths being different from each other set of subscriber wavelengths; and second wavelength division multiplexers having second inputs coupled to the first outputs of the first multiplexing device, the second wavelength division multiplexers each including a plurality of second outputs and a second filter criteria that assigns a subscriber wavelength from each different set of subscriber wavelengths to each of the second outputs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A distributed wave division multiplexing system comprising:
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an input fiber carrying a plurality of subscriber signals each having a unique wavelength; a plurality of channel fibers; a first multiplexing device including a first WDM configured to receive the input fiber, the first multiplexing device being configured to separate the subscriber signals carried by the input fiber onto the channel fibers, the first multiplexing device having a first set of filter criteria that assigns a corresponding plurality of wavelengths to each of the channel fibers so that the wavelength of each subscriber signal is assigned to one of the channel fibers, the first multiplexing device separating the subscriber signals so that each channel fiber will receive any subscriber signal having one of the corresponding wavelengths; a plurality of output fibers; a second multiplexing device coupled to the first multiplexing device to receive one of the channel fibers, the second multiplexing device being configured to separate the subscriber signals carried by the received channel fiber onto the output fibers, the second multiplexing device having a second set of filter criteria that assigns a corresponding plurality of wavelengths to each of the output fibers so that the wavelength of each subscriber signal carried by the received channel fiber is assigned to one of the output fibers, the second multiplexing device separating the subscriber signals carried by the received channel fiber so that each output fiber will receive any subscriber signal having one of the corresponding wavelengths of that output fiber; wherein, for each of the channel fibers, each of the output fibers has a corresponding wavelength that matches one of the corresponding wavelengths of the channel fiber. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method of configuring a distributed wave division multiplexing system, the method comprising:
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determining a number of unique wavelengths over which optical subscriber signals are transmitted; configuring a first multiplexing device to associate a respective set of wavelengths with each of X number of channel fibers, each set including Y number of wavelengths; and configuring a second multiplexing device to associate each of Y number of output lines with a respective set of wavelengths, each set including X number of wavelengths, wherein each of the Y number of wavelengths of the set associated with a first of the channel fibers is associated with a different one of the output fibers, and wherein each of the X number of wavelengths of the set associated with a first of the output fibers is associated with a different one of the channel fibers, wherein X*Y is greater than or equal to the determined number of unique wavelengths. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification