Abstract: An optical interconnection device has a passive control mechanism for substantially eliminating thermal effects on optical properties of the apparatus Specifically, the interconnection apparatus includes a control material coupled to an optical circuit substrate, wherein the control material has a thermal expansion coefficient that is different than a substrate thermal expansion coefficient. In response to an increase or decrease an ambient temperature, the control material thermally expands or contracts at a different rate than the substrate to create a non-planar substrate distortion transmitted to the core portion, thereby creating a temperature independent optical path length within the optical core portion.

Abstract: A wiring patch panel cabinet accommodates plural termination devices. A cabinet support structure includes spaced apart top and bottom walls and opposed sidewalls. The cabinet support structure secures a plurality of individual patch panels. Each patch panel accommodates termination devices of a given type. The termination devices of one patch panel may be different from the termination devices of another patch panel supported by the cabinet structure. The patch panels are supported by the cabinet in side-by-side vertical orientation to facilitate removal and repair of an individual patch panel without disturbing adjacent patch panels.

Abstract: A connector module for use in a local area network having a plurality of workstations in connection with a hub, wherein each workstation is hard wired to a printed circuit board mounted in the module. The module further includes a wiring assembly connected to the board and a cable leading from the hub. The face of the panel includes a plurality of jacks mounted therein, which are also electrically connected to the printed circuit board. Initially, workstations are electrically connected to the hub through the wiring assembly, which is preferably a twisted pair flat cable. Alternately, the wiring assembly may be disconnected from the board, and an upgraded hub interconnected with the workstations through the jacks in the face of the module with minimal re-wiring required.

Abstract: A traceable transmission conduit assembly includes an optically transmissive jacket over a transmission conduit. The conduit, which may be an optical fiber, includes a light transmissive and translucent jacket thereover. Light is injected into the jacket at one location therealong. The light is emitted along the length of the jacket so that the jacket illuminates. One conduit bundled among a group of similar conduits may be traced by so illuminating the jacket of the one conduit.

Abstract: A wiring patch panel cabinet accommodates plural termination devices. A cabinet support structure includes spaced apart top and bottom walls and opposed sidewalls. The cabinet support structure secures a plurality of individual patch panels. Each patch panel accommodates termination devices of a given type. The termination devices of one patch panel may be different from the termination devices of another patch panel supported by the cabinet structure. The patch panels are supported by the cabinet in side-by-side vertical orientation to facilitate removal and repair of an individual patch panel without disturbing adjacent patch panels.

Abstract: A crimp sleeve, for connection of the back shell of a fiber optic cable connector with a fiber optic cable of a type including a buffered optic fiber having an encircling jacket inclusive of fibrous matter, includes a crimpable body member having first and second open ends and defining a passage between the first and second open ends, the crimpable member having first and second interior surfaces bounding the passage successively lengthwise of the body member. The first interior surface extends from the first open end interiorly of the body member and has a first radius relative to a central axis of the body member and the second interior surface has a second radius relative to the central axis of the body member of measure less than the first radius.

Abstract: An optical fiber splicing device (20) includes a glass cylindrically shaped capillary tube member (24) having a passageway formed therethrough eccentrically of the longitudinal axis of the capillary tube member. The capillary tube member is provided with a slot (86) such that a portion of the passageway in the form of a groove (88) extends across a planar surface (87) formed by the slot. The capillary tube member is mounted in a housing (22) which is made of a material and formed to provide a lens opposite to the slot to facilitate visual inspection of ends of end portions of two optical fibers which are positioned in the groove. A spring clamp (26) is mounted to the housing in a first position spaced from the planar surface to allow insertion of fiber end portions into the groove.

Abstract: An optical fiber connector of the continuous groove type comprising a substrate with a multiplicity of fiber-receiving grooves thereon, and a cover member comprising compliant fiber-contacting material having a modulus of elasticity less than about 10.sup.6 psi (less than about 6.9 GPa), preferably less than 10.sup.5 psi. Connectors according to the invention can have low loss, and low added loss during thermal cycling. In a particular preferred embodiment, the substrate is a molded plastic part, and the compliant material is an adhesive-backed polyester film.