Abstract: A cable includes a jacket defining an exterior of the cable and a rigid tube. The cable further includes densely-packed strength members on the outside of the rigid tube, compressed between the rigid tube and the jacket, and loosely-packed strength members on the inside of the rigid tube. Further the cable includes a core that is interior to the tube.

Abstract: An optical communication cable is provided. The optical communication cable includes an outer cable layer and a plurality of optical fiber bundles surrounded by the outer cable layer. Each optical fiber bundle includes a bundle jacket surrounding a plurality of optical fiber subunits located within the bundle passage. The plurality of optical subunits are wrapped around each other within the bundle passage forming a wrapped pattern. Each optical fiber subunit includes a subunit jacket surrounding a elongate optical fiber located within the subunit passage. The cable jacket, bundle jacket and subunit jacket may be fire resistant, and strength strands of differing lengths may be located in the bundles and the subunits.

Abstract: A rugged optical micromodule cable is provided. The cable includes a composite cable jacket including a first cable jacket layer formed from a first material and a second cable jacket layer formed from a second material. The first cable jacket layer provides at least 10% of the thickness of the cable jacket and the second cable jacket layer provides at least 10% of the thickness of the cable jacket. The first material is different than the second material, and each material provides different physical properties to the cable jacket.

Abstract: A rugged micromodule cable includes central strength yarns, micromodules stranded around the central strength yarns, additional strength yarns positioned around the stranded micromodules, and a jacket of polymeric material surrounding the additional strength yarns. The micromodules each include sheathing surrounding a plurality of optical fibers. The strand profile of the micromodules is tight, having an average lay length of less than 250 mm, and the sheathing is thin-walled, having an average thickness of less than about 200 micrometers. The strand of the micromodules, the positioning of the additional strength yarns, and bonding between the additional strength yarns and the jacket mitigate lengthwise movement of the optical fibers in the rugged micromodule cable.

Abstract: A rugged micromodule cable includes central strength yarns, micromodules stranded around the central strength yarns, additional strength yarns positioned around the stranded micromodules, and a jacket of polymeric material surrounding the additional strength yarns. The micromodules each include sheathing surrounding a plurality of optical fibers. The strand profile of the micromodules is tight, having an average lay length of less than 250 mm, and the sheathing is thin-walled, having an average thickness of less than about 200 micrometers. The strand of the micromodules, the positioning of the additional strength yarns, and bonding between the additional strength yarns and the jacket mitigate lengthwise movement of the optical fibers in the rugged micromodule cable.

Abstract: A rugged micromodule cable includes central strength yarns, micromodules stranded around the central strength yarns, additional strength yarns positioned around the stranded micromodules, and a jacket of polymeric material surrounding the additional strength yarns. The micromodules each include sheathing surrounding a plurality of optical fibers. The strand profile of the micromodules is tight, having an average lay length of less than 250 mm, and the sheathing is thin-walled, having an average thickness of less than about 200 micrometers. The strand of the micromodules, the positioning of the additional strength yarns, and bonding between the additional strength yarns and the jacket mitigate lengthwise movement of the optical fibers in the rugged micromodule cable.

Abstract: Fiber optic assemblies include subunit cables wrapped in binders. The assemblies have small cross sections and low bend radii while maintaining acceptable attenuation losses. Stranding of the subunit cables allows ease of access to the individual cables during installation.

Abstract: A cable includes a jacket defining an exterior of the cable and a rigid tube. The cable further includes densely-packed strength members on the outside of the rigid tube, compressed between the rigid tube and the jacket, and loosely-packed strength members on the inside of the rigid tube. Further the cable includes a core that is interior to the tube.

Abstract: Fiber optic assemblies include subunit cables wrapped in binders. The assemblies have small cross sections and low bend radii while maintaining acceptable attenuation losses. Stranding of the subunit cables allows ease of access to the individual cables during installation.

Abstract: Fiber optic assemblies include subunit cables wrapped in binders. The assemblies have small cross sections and low bend radii while maintaining acceptable attenuation losses. SZ stranding of the subunit cables allows ease of access to the individual cables during installation.

Abstract: Fiber optic assemblies include subunit cables wrapped in binders. The assemblies have small cross sections and low bend radii while maintaining acceptable attenuation losses. SZ stranding of the subunit cables allows ease of access to the individual cables during installation.

Abstract: A system, apparatus and methods for transmitting video and audio data over twisted pairs are described. A differential signal that contains video color information is transmitted over each twisted pair. Data representing digital samples of at least one audio signal is transmitted on two or more of the twisted pairs as a common mode signal.

Abstract: Fiber optic cables are disclosed that include at least one optical fiber and a flame-retardant cable jacket. The flame-retardant cable jacket has a cavity wherein the at least one optical fiber is disposed within the cavity. The flame-retardant cable jacket includes one or more flame-retardant additives and the flame-retardant cable jacket is essentially free of a water-soluble component that can dissolve and migrate into the cavity. By way of example, the flame-retardant cable jacket is a polyvinyl chloride (PVC) essentially free of ammonium octamolybdate. Other variations include fiber optic cables having a barrier layer for inhibiting the migration of water into a cable cavity.

Abstract: A robust protective casing is provided that includes an inner tubing having a passageway therethrough, an outer tubing, and a plurality of flexible strength members disposed between the inner and outer tubing. The protective casing has a wall tubing thickness ratio of the inner tubing wall thickness to the outer tubing wall thickness of about 0.5 or less while still inhibiting the kinking of the protective casing during relatively small bend radii. Additionally, an outer diameter of the protective casing is relatively small while still allowing the routing of a standard sized 900 micron tight-buffered optical fiber through the passageway. Thus, the protective casing is advantageous in applications where limited space is available space. A fan-out assembly using the protective casings is also described.

Abstract: The present invention is an inexpensive safety tape that can be used in several applications including, but not limited to, the illumination of a disable vehicle on the side of a roadway. The invention consists of few moving parts including a housing, reflective tape and a connecting device that allows the tape to be connected to an object for demarcation. When used with a disable car on the side of a roadway the reflective tape is connected to the vehicle and then deployed behind the vehicle in such a manner that it provides an early warning system to oncoming traffic. Alternatively, the invention can be used with a stand that allows the reflective tape to be used as a temporary barrier or a demarcation device to cord off a given area.

Abstract: A communication cable including at least one communication element having a ripcord for ripping at least one cable component for facilitating access to the communication cable. In one embodiment, the ripcord is formed from a plurality of plies twisted together in a first direction, each of the plurality of plies being formed from a plurality of strands twisted together in a second direction. In another embodiment, the ripcord is formed from at least two different filament materials such as polyester and polyethylene.

Abstract: A fiber optic cable and manufacturing methods therefor includes a cable core that having at least one optical waveguide and at least one binder. The cable also includes a polymer layer being disposed about the at least one binder. During the extrusion of the polymer layer, the polymer layer at least partially melts the at least one binder when extruded thereover, thereby at least partially bonding the at least one binder with the polymer layer. In other embodiments, the cable is a dry fiber optic cable.

Abstract: In a cellular mobile telecommunications system the position of a mobile station can be estimated in terms of its bearing and range from a cell site. A multi-element direction finding antenna at the cell site receives signals from the mobile station and a receiver circuit estimates the bearing using the relative phase of signals received at different antenna elements and estimates the range by measuring round trip delay of signals to and from the mobile station. Motion of the mobile station can introduce errors into the bearing estimate due to frequency offset and frequency spread when element sampling is non-simultaneous. Compensation for these errors is introduced by using signal samples successively received at the same antenna element to estimate Doppler frequency offset and spread. It is necessary to ensure accurate calibration of the direction finding antenna and the receiver circuit.

Abstract: A system for transmitting electrical signals between a computer and peripherals along a twisted pair cable. The system includes a computer interface, a peripheral interface and a twisted pair cable in communication between the computer interface and the peripheral interface. Video and audio signals from the computer are transmitted via the twisted pair cable to the peripherals. Peripheral signals can also be communicated between the computer and peripherals via the twisted pair cable.

Abstract: In a cellular mobile telecommunications system the position of a mobile station can be estimated in terms of its bearing and range from a cell site. A multi-element direction finding antenna at the cell site receives signals from the mobile station and a receiver circuit estimates the bearing using the relative phase of signals received at different antenna elements and estimates the range by measuring round trip delay of signals to and from the mobile station. Motion of the mobile station can introduce errors into the bearing estimate due to frequency offset and frequency spread when element sampling is non-simultaneous. Compensation for these errors is introduced by using signal samples successively received at the same antenna element to estimate Doppler frequency offset and spread. It is necessary to ensure accurate calibration of the direction finding antenna and the receiver circuit.