Gte Laboratories Incorporated

Stanley A Zemon

Chirravuri Jagannath

Ben G Yacobi

Mark L Dakss

Samuel M Stone

Daniel Fellows

Phillip A Sturk

Heteroepitaxial semiconductor structures of, for example, GaAs on InP or Si. The epitaxially grown GaAs is in the form of individual spaced-apart islands having maximum dimensions in the plane of the surface of the substrate of no greater than 10 micrometers. In islands of this size stress in the plane of the epitaxially grown layers due to mismatch of the coefficients of thermal expansion of the substrate and epitaxially grown materials is insignificant.

Method of manufacturing an heteroepitaxial semiconductor structure

Semiconductor structure

An acoustooptic modulator is disclosed in which light may be modulated while propagating through an optical fiber waveguide through the use of focussed acoustic waves. The modulator is formed by encircling a portion of the optical fiber waveguide in an optical communications system with an acoustic transducer. Due to the encircling of a portion of the waveguide by the transducer, the acoustic waves which are generated in the optical fiber waveguide material are focussed inwardly to the center so that the energy densities where acoustooptic modulation occurs are high. Therefore, the acoustic driving powers and modulation efficiencies are highly favorable.

Acoustooptic modulator for optical fiber waveguides

An improved optical fiber coupler for use with eccentrically mounted optical fibers is disclosed in which a V-groove coupler block is utilized for receiving and locating the mating pair of connectors. The connectors are circularly cylindrical and each lies in an end of a V-groove recess. The V-groove at one end of the coupler block is offset relative to the V-groove at the other end by the incorporation of a thin shim on one of the faces of the V-groove. The thickness of the shim determines the amount of offset.

Eccentric optical fiber coupler

Growing community of inventors

Boston, MA, United States of America

Stanley A Zemon