Abstract: An explosion proof optical fiber splicer system includes a gasket sealed arc chamber fed with purging inert gas to exclude ambient air which may be contaminated with explosive hazardous gases or particles. Prepared bare fiber ends are placed within the chamber on a pedestal held by fiber clamps. An arc between electrodes perpendicular to the fiber line is made possible only when adequate inert gas is present as controlled by a control monitor. The control monitor receives information from sensors within the arc chamber regarding oxygen content, inert gas pressure, and flow volume. The explosion proof optical fiber splicer system is compact and can be used in contained narrow spaces without need for disassembly of optical connections.

Abstract: A compact, low profile splicing system for joining optical fibers produces durable, low transmission loss fusion splices. The system employs active optical techniques such as profile alignment or local injection and detection to achieve optimized alignment of the fibers prior to fusion. Light injected into one fiber is propagated across the interface to a second fiber. A detector senses the intensity of the injected light in the second fiber. After the relative position of the fibers is manipulated to maximize the transmitted intensity, the fibers are fusion spliced using an electric arc discharge. The accurate alignment achievable using the local injection and detection system to drive adaptive fiber positioning affords a method for reliably producing low loss splices. The present system is compact and low in profile, making it operable in cramped quarters with limited clearance to adjacent equipment and structures and with only a minimal amount of free fiber slack available.

Abstract: A compact, low profile splicing system for joining optical fibers produces durable, low transmission loss fusion splices. The system employs active optical techniques such as profile alignment or local injection and detection to achieve optimized alignment of the fibers prior to fusion. Light injected into one fiber is propagated across the interface to a second fiber. A detector senses the intensity of the injected light in the second fiber. After the relative position of the fibers is manipulated to maximize the transmitted intensity, the fibers are fusion spliced using an electric arc discharge. The accurate alignment achievable using the local injection and detection system to drive adaptive fiber positioning affords a method for reliably producing low splices. The present system is compact and low in profile, making it operable in cramped quarters with limited clearance to adjacent equipment and structures and with only a minimal amount of free fiber slack available.

Abstract: A splicing system for joining polarization-maintaining, single mode optical fibers produces durable fusion splices that have low transmission loss and maintain mode integrity. The system employs active optical techniques such as profile alignment or local injection and detection to achieve optimized lateral alignment of the fibers prior to fusion. Azimuthal alignment is performed using a transverse, polarized light illumination and detection system. Each fiber is rotated azimuthally to determine a transverse intensity function. The transverse intensity functions of the respective fibers are cross-correlated to determine a relative orientation that matches the polarization axes of the fibers. After the relative position of the fibers is manipulated laterally, axially, and azimuthally, the fibers are fusion spliced using an electric arc discharge.

Abstract: A splicing system for joining polarization-maintaining, single mode optical fibers produces durable fusion splices that have low transmission loss and maintain mode integrity. The system employs active optical techniques such as profile alignment or local injection and detection to achieve optimized lateral alignment of the fibers prior to fusion. Azimuthal alignment is performed using a transverse, polarized light illumination and detection system. Each fiber is rotated azimuthally to determine a transverse intensity function. The transverse intensity functions of the respective fibers are cross-correlated to determine a relative orientation that matches the polarization axes of the fibers. After the relative position of the fibers is manipulated laterally, axially, and azimuthally, the fibers are fusion spliced using an electric arc discharge.

Abstract: A compact, low profile splicing system for joining optical fibers produces durable, low transmission loss fusion splices. The system employs active optical techniques such as profile alignment or local injection and detection to achieve optimized alignment of the fibers prior to fusion. Light injected into one fiber is propagated across the interface to a second fiber. A detector senses the intensity of the injected light in the second fiber. After the relative position of the fibers is manipulated to maximize the transmitted intensity, the fibers are fusion spliced using an electric arc discharge. The accurate alignment achievable using the local injection and detection system to drive adaptive fiber positioning affords a method for reliably producing low loss splices. The present system is compact and low in profile, making it operable in cramped quarters with limited clearance to adjacent equipment and structures and with only a minimal amount of free fiber slack available.

Abstract: A fiber optic terminus assembly for use in a fiber optic connector is disclosed in which a gripper element and a radially deformable ferrule are compressed into gripping engagement with the optical fiber portion of an optical cable. A terminus body and a contact sleeve engage the outer layer of the optical cable and the ferrule and position the fiber at a preselected distance from a lens surface.

Abstract: A fiber optic cable splice means for splicing a fiber optic cable having a pair of fiber retaining elements with an opening for receiving the buffer casing at an end of a fiber optic cable with its bare optic fiber extending therefrom. A cavity within each element provides a fiber deflection chamber for protecting therein the bare optic fiber. The retaining elements are crimped for securing therewith the buffer casing and its optic fiber. A housing or tubular unit has end sections which receive therein a respective one of the retaining elements, and are crimped for securing the retaining elements therewith. An optical fiber alignment means is contained within the unit for aligning and optically joining together the ends of the optic fibers which extend from the retaining elements. The retaining elements may have an insert through which the optic fiber extends for securing the fiber by the crimping of the retaining elements.

Abstract: An electrical resistor of resistivity of less than about 600 ohms per square and with a temperature coefficient of resistance within the range of .+-.200 ppm/.degree.C. comprises an insulating substrate, electrically conductive terminations on a surface of the substrate, and a layer of resistor material on the surface of the substrate and in contact with the terminations. The resistor material comprises from about 25 to about 35% by weight glass and from about 50% to about 75% by weight conductive particles. Preferably the conductive particles consisting essential of tin oxide and at least about 0.2% by weight of ruthenium containing material, expressed as RuO.sub.2. The mass ratio of ruthenium containing material (as RuO.sub.2) to tin oxide is less than 7:93.

Abstract: A ceramic glass material comprising a mixture of fine particles of barium titanate, leaded glass frit and an additive material containing manganese. A ceramic glass body and capacitor made from the material by firing the ceramic glass material to a peak temperature between 900.degree. C. and 1050.degree. C. in a non oxidizing atmosphere at which the glass softens. The capacitor has non precious metal electrodes with a melting point above the firing temperature which are co-fired with the ceramic glass material. Upon cooling the fired ceramic glass material and electrodes form a capacitor with the ceramic glass body separating the electrodes and providing a high dielectric constant and insulation resistance, and a low dissipation factor.

Abstract: A fiber optic terminus assembly for use in a fiber optic connector is disclosed in which a gripper element and a radially deformable ferrule are compressed into gripping engagement with the optical fiber portion of an optical cable. A terminus body and a contact sleeve engage the outer layer of the optical cable and the ferrule and position the fiber at a preselected distance from a lens surface.