System and method for communicating optical signals upstream and downstream between a data service provider and subscribers
12 Assignments
0 Petitions
Accused Products
Abstract
An optical fiber network can include an outdoor bandwidth transforming node that can be positioned in close proximity to the subscribers of an optical fiber network. The outdoor bandwidth transforming node does not require active cooling and heating devices that control the temperature surrounding the bandwidth transforming node. The bandwidth transforming node can adjust a subscriber'"'"'s bandwidth on a subscription basis or on an as-needed basis. The bandwidth transforming node can also offer data bandwidth to the subscriber in preassigned increments. Additionally, the bandwidth transforming node lends itself to efficient upgrading that can be performed entirely on the network side. The bandwidth transforming node can also provide high speed symmetrical data transmission. Further, the bandwidth transforming node can increase upstream and downstream bandwidth and transmission speed by propagating data signals at different wavelengths.
109 Citations
56 Claims
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1-29. -29. (canceled)
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30. An optical network system comprising
a data service hub; -
at least one optical tap, the optical tap further comprising a spectral slicer for passively extracting wavelengths of downstream optical signals and for passively combining upstream optical signals;
at least one subscriber optical interface connected to the optical tap for receiving the extracted wavelengths of downstream optical signals and for sending upstream optical signals;
a bandwidth transforming node disposed between the data service hub and the optical tap, for propagating upstream signals to the data service hub and propagating downstream optical signals to the subscriber optical interface, the bandwidth transforming node receiving downstream signals from the data service hub and upstream optical signals from the subscriber optical interface, the bandwidth transforming node comprising a routing device for apportioning bandwidth in the electrical domain between subscribers and using a look-up table for processing both upstream and downstream electrical signals, the bandwidth transforming node converting downstream electrical signals exiting from the routing device into the optical domain for transmission to the subscriber optical interface. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45)
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46. A method for communicating optical signals from at least one subscriber to a data service provider comprising the steps of:
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passively transmitting upstream optical signals with a slicer from a first optical tap, the first optical tap selecting a first set of wavelengths;
receiving the upstream optical signals at a bandwidth transforming node from the optical tap;
converting the upstream optical signals to electrical signals at the bandwidth transforming node;
combining upstream electrical signals in the bandwidth transforming node;
apportioning bandwidth with a routing device in an electrical domain for the first and second subscriber in the bandwidth transforming node;
using a look-up table with the routing device for processing the upstream electrical signals; and
propagating the combined upstream electrical signals to the data service provider. - View Dependent Claims (47, 48)
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- 49. The method of claim 49, further comprising the step of feeding the first optical tap with optical signals from the second optical tap.
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51. A method for communicating optical signals from a data service provider to at least one subscriber comprising the steps of:
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dividing the downstream electrical signals with a routing device between preassigned multiplexers in the bandwidth transforming node, the preassigned multiplexers corresponding to a grouping of subscribers;
multiplexing the downstream electrical signals at the preassigned multiplexers;
assigning wavelength for single tap;
apportioning bandwidth with the routing device in the electrical domain between subscribers in the bandwidth transforming node;
using a look-up table with the routing device for processing the downstream electrical signals;
converting the downstream electrical signals to optical signals in the wavelength region for each of said groups of optical taps; and
propagating respective combined downstream optical signals to at least one subscriber along at least one optical waveguide. - View Dependent Claims (52, 53, 54, 55, 56)
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Specification