Lucent Technologies Inc.

Joseph Anthony Abate

Herman M Presby

David John DiGiovanni

Robert Scott Windeler

Gerald Nykolak

George K Celler

James J Auborn

Paul F Szajowski

Robert George Ahrens

Gerald Edward Tourgee

Michael James LuValle

Jerry Vhi-Yi Guo

Applicants have discovered an apparatus and method effective for use in rendering an optical fiber resistant to losses caused by high-radiation environments such as in outerspace. The apparatus comprises an optical fiber, a housing surrounding the optical fiber defining an enclosed space between the exterior surface of the fiber and the housing, and a concentration of deuterium or hydrogen gases disposed within the enclosed space.

Optical fiber apparatus for high-radiation environments

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

A method of making an x-ray mask intended to expose photoresist upon a layer which is to be etched to a nominal dimension, whereby effects such as global divergence, local divergence, and dose non-uniformity are compensated by adjusting the feature dimension in the mask. The compensation is achieved by varying the dose provided by an electron beam which is used to define the feature upon the x-ray mask or by adding or subtracting pixels during writing of the pattern with an electron beam. The dose is varied by changing the electron beam current or the rate at which the electron beam scans the field. The features are typically those encountered in the processing of a semiconductor wafer wherein the smallest dimension is 250 nm or less.

Process for making an x-ray mask

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Lafayette, NJ, United States of America

Joseph Anthony Abate