Abstract: Providing bandwidth expansion in existing HFC infrastructures. A break in a fiber ring is established. A temperature hardened demultiplexer is coupled at the break to an input side of the fiber ring. A temperature hardened multiplexer is coupled at the break to an output side of the fiber ring. The temperature hardened demultiplexer is configured to pass-through a first predetermined wavelength to the temperature hardened multiplexer and to drop out a second predetermined wavelength. The second predetermined wavelength is extended from the demultiplexer for providing a first predetermined wavelength to an expansion node. The temperature hardened multiplexer is configured to receive the first predetermined wavelength from the temperature hardened demultiplexer and to receive the second predetermined wavelength from the expansion node.

Abstract: Providing bandwidth expansion in existing HFC infrastructures. A break in a fiber ring is established. A temperature hardened demultiplexer is coupled at the break to an input side of the fiber ring. A temperature hardened multiplexer is coupled at the break to an output side of the fiber ring. The temperature hardened demultiplexer is configured to pass-through a first predetermined wavelength to the temperature hardened multiplexer and to drop out a second predetermined wavelength. The second predetermined wavelength is extended from the demultiplexer for providing a first predetermined wavelength to an expansion node. The temperature hardened multiplexer is configured to receive the first predetermined wavelength from the temperature hardened demultiplexer and to receive the second predetermined wavelength from the expansion node.

Abstract: A fiber optic cable having a plurality of buffer tubes. Within at least one of the buffer tubes is a plurality of main fibers. Within the cable outer sheath, the main fibers are factory-spliced with optical splitters at predetermined distances. Distribution fibers are factory-spliced to the outputs of the optical splitters. The distribution fibers reside within distribution buffer tubes, and are available for access at substantially any location along the length of the fiber optic cable. A certain number of the distribution fibers from a particular optical splitter extend in an upstream direction of the fiber cable, and the remaining distribution fibers from that optical splitter extend in a downstream direction.

Abstract: A method and system for testing the continuity of a transmission line in a non-addressable network. A method and system in a communications service environment are provided, the environment including an addressable network and a non-addressable network, for testing transmission line continuity in the non-addressable network. In an embodiment, a signal generator connected to a first transmission line in the addressable network generates a signal on the first transmission line. The first transmission line is connected to a second transmission line in the non-addressable network by a bridge. The bridge transfers the signal from the first transmission line to the second transmission line. The system also includes a signal receiver connected to the second transmission line for receiving the signal over the second transmission line when the second transmission line is continuous.