Abstract:
An MPO connector includes a pin configuration with an elongated shaft extending along an axis A. A first portion proximate a first end of the shaft includes a tool surface feature for engagement by a tool to impart a rotation to the shaft. A second portion proximate a second end of the shaft is cylindrical and centered on an axis B, offset relative to the axis A. A method of minimizing insertion loss between mating channels of mated MPO connectors includes inserting light into a channel of a first MPO connector, then measuring an intensity of light output from a channel of a second MPO, mated to the first MPO connector. A pin associated with one of the mated MPO connectors is rotated to a point where the measured light output from the channel of the second MPO connector is approximately maximized.
Abstract:
A retractable datacommunications rack includes: a mounting member configured to mount to a mounting structure; a linkage mounted to the mounting member; and an enclosure mounted on the linkage and configured to provide locations for datacommunications interconnections. The linkage is configured to move the enclosure between a retracted raised position and a lowered working position.
Abstract:
Reduced-pair Ethernet patch cords include a twisted pair cable that has a pair of insulated conductors that are contained within a cable jacket. A connector is mounted on a first end of the cable. The connector includes a connector housing and a strain relief unit that is mounted on the cable at the interface between the cable and the connector housing. The strain relief unit includes a plurality of internal protrusions that contact the cable jacket.
Abstract:
A multi-core optical fiber has dimensions to be backwards compatible with a conventional, single-core optical fiber of the single-mode or multimode type. In one embodiment, the center core has a diameter, such as 3 to 9 um, 50 um or 62.5 um. Such a multi-core optical fiber can be used in connector envelopes like an LC, SC, ST or an array connector, such as an MTP/MPO connector, and will permit the fiber optic connector to continue supporting conventional transmission using only the central core of the optical fiber. Yet, allow fiber optic networks to be upgraded from supporting conventional transmission to parallel transmission using the multiple cores within the optical fiber at a later date.
Abstract:
Communications jacks include a plurality of contacts (130) that are configured to move between a resting position and a deflected position and at least one biasing member (139) that is separate from the plurality of contacts that biases at least a first of the plurality of contacts towards its resting position. The jacks further include a printed circuit board (122) that includes a first contact structure that is configured to electrically connect to the first of the plurality of contacts when the first of the plurality of contacts is in its deflected position.
Abstract:
An optical fiber module includes a plate having a first side, a second side and at least one through opening, a plurality of connection elements at the first side, and a mounting block at the second side that is configured to secure, relative to the plate, at least one second fiber optic connector which has a longitudinal axis, an end, a wide portion and an end portion between the wide portion and the end. The mounting block includes a channel having an enlarged portion configured to receive the wide portion of the at least one second fiber optic connector, and the channel is configured to permit the insertion of the at least one second fiber optic connector in a direction perpendicular to the longitudinal axis while preventing the removal of the at least one second fiber optic connector in any direction parallel to the longitudinal axis.
Abstract:
A connector includes a body configured to latchingly connect to a complementary connector element in a latching direction and an arm projecting from the body at an angle to the axis. The arm is configured to shift from a first position with its distal end a first distance from the axis to a second position with its distal end a second distance from the axis, and the body is removable from the complementary connector element when the arm is in the second position. The connector includes a force redirection element connected to the body and an extension member in contact with the force redirection element. The force redirection element is configured such that when a force is applied to the extension member in a direction opposite the latching direction, the arm is shifted from the first position toward the second position.
Abstract:
A fiber optic cable (11; 11') includes first and second optical fibers (13, 15). A fiber section (17) surrounds the fibers and is formed of a first material. First and second strength members (19, 21) are adjacent to the fiber section on opposite sides thereof. A jacket (23) surrounds the first and second strength members and fiber section. The jacket is formed of a second material, stronger than the first material and which does not adhere to the first material. The jacket may be manually torn open to access the fiber section. The fiber section may be manually pinched and stripped cleanly from the fibers. The fiber section acts as a cocoon to protect the fibers when the jacket is opened and cleanly pulls off of the fibers by manual force.
Abstract:
A sliding tray is configured to support one or more optical communications modules and includes a body portion having one or more mounting locations for the one or more optical communications modules, a trough projecting from the body portion and configured to support optical fibers connected to the one or more optical communications modules, and a cover pivotably connected to the tray for selectively covering the trough.
Abstract:
A conductor for a communications cable includes an elongated metal wire and a metal sheet that includes a plurality of carbon nanotubes that at least partially surrounds the elongated metal wire. The metal wire may include copper, and the metal sheet may likewise include copper and may be welded to an outside surface of the metal wire to surround the metal wire. This conductor may be used in a variety of communications cables that carry high frequency signals.