Gte Laboratories Incorporated

Bell Telephone Laboratories

Lucent Technologies Inc.

At&t Ipm Corp.

James J Auborn

Joseph M Proud

Elizabeth A Trickett

Richard A Bessett

Herman M Presby

Gerald Nykolak

Jay R Simpson

Paul F Szajowski

Gerald Edward Tourgee

Arthur E Neeves

Joseph Anthony Abate

Yvonne L Barberio

Richard D Bezman

Shelie M Granstaff, Jr

An optical wireless link using wavelength division multiplexing. A transmitter transmits an optical signal to a receiver over a free space medium, such as the atmosphere. The transmitter uses single mode optical structures between the lasers and the transmitting telescope, including one or more erbium-doped single mode fiber amplifiers.

Wavelength division multiplexing wireless optical link

Signal energy in an installed optical fiber is extracted without using a physical connector, by an improved process in which the fiber is bent to within a prescribed range of angles, then controllably heated, and thereafter controllably cooled. The resulting structure exhibits relatively low permanent stress. A fiber end conventionally placed at the bend point receives unusually useful amounts of optical signal which can be routed to optical branch circuits in, for example, a building or a LAN.

Bending process for optical coupling of glass optical fibers

An electrochemical cell having an alkali metal anode; a cathode selected from the group consisting of halogens, metal halides, Group VI A elements and compounds thereof with metallic elements; and an electrolyte containing an inorganic solvent system and a solute dissolved in the solvent system. The solvent system comprises a mixture of phosphorus oxychloride, and a low freezing solvent selected from the group consisting of thionyl chloride, thiophosphoryl chloride, sulfuryl chloride and monofluorophosphoryl dichloride.

Electrochemical cell utilizing a mixture of phosphorus oxychloride and a

High voltage control devices are provided comprising a housing, an aprotic liquid contained within said housing, means for effecting heat exchange with said liquid, at least two spaced electrodes contained within said liquid and each of said electrodes extending from said housing. These devices find utility as variable resistors, circuit breakers, theremostats, optical triggering devices, acoustic pulse generators and the like.

High voltage control devices

An alkali metal, such as sodium, sulfur cell having an alkali metal anode, a solid ionic electrolyte, such as sodium .beta. alumina, and a liquid catholyte formed by sulfur, a halosulfane, such as sulfur monochloride and a haloacid, such as aluminum chloride, is described.

Alkali metal-sulfur cells

Cells or fuel cells having two or more electrodes and an electrolyte are described in which at least one of the electrodes has, in addition to the active electrode material, a poly(phosphazene) polymer which is a binder.

Cell and fuel cell electrodes having poly(phosphazene) binder

High voltage control devices are provided comprising a housing, an aprotic liquid contained within said housing, means for effecting heat exchange with said liquid, at least two spaced electrodes contained within said liquid and each of said electrodes extending from said housing. These devices find utility as variable resistors, circuit breakers, thermostats, optical triggering devices, acoustic pulse generators and the like.

Process for the preparation of reactive tungsten comprising reducing a tungsten compound in a reducing atmosphere at temperatures ranging from about 450.degree. C to 700.degree. C. The reactive tungsten can be readily converted to WC, W.sub.2 C or WN.

Process for the preparation of reactive tungsten and derivatives thereof

A mandrel and a method for its manufacture and its use in manufacturing filament coils for electric lamps is disclosed. The mandrel, having a base core containing iron, is protected from diffusion of iron into a filament wire wound thereabout by a first coating of copper and a second coating of tungsten over the first, base metal. The process of coating the tungsten over the copper coating is improved by employing small amounts of copper ion contaminant in the electroplating solution. After a filament wire is wound around and annealed over this mandrel, the mandrel is selectively dissolved leaving the shaped filament coil, substantially free of extraneous metal impurities.

Mandrel and method of manufacturing same

Electrochemical cells having an oxidizable active anode material, a solid metallic cathode current collector, and an electrolytic solution between and in contact with the anode and the cathode current collector, the electrolytic solution comprising a liquid covalent inorganic oxyhalide or thiohalide solvent and a solute dissolved therein, the inorganic solvent being the sole oxidant material and sole solvent material in the cell. The cathode comprises a solid, non-consumable, electrically conducting, inert current collector upon the surface of which the inorganic solvent is electorchemically reduced, whereby the inorganic solvent in conjunction with the oxidizable anode serves as a source of electrical energy during operation of the cell.

Electrochemical cells having an electrolytic solution comprising a

Electrochemical cells having an oxidizable anode material, such as lithium, a cathode material, such as carbon or (C.sub.4 F).sub.n, upon the surface of which the solvent material is electrochemically reduced during operation of the cell, and an electrolytic solution comprising an inorganic solvent and a solute dissolved therein. The electrolytic solution further contains an additive such as sulfur monochloride (S.sub.2 Cl.sub.2), which is capable of dissolving any sulfur generated during operation of the cell and which is unreactive with the other components of the cell.

Electrochemical cells

An electrochemical cell having an alkali metal anode, an electronically conducting cathode and a nonaqueous electrolytic solution containing an inorganic oxyhalide solvent is housed in a container the inner surface of which is an oxide of either aluminum, magnesium, titanium or alloys thereof.

Growing community of inventors

Groton, MA, United States of America

James J Auborn