1
David J DiGiovanni, Joseph D Evankow, Jonathan A Nagel, Richard G Smart, James W Sulhoff, John L Zyskind: High power, high gain, low noise, two-stage optical amplifier. AT&T, Mark K Young, July 4, 1995: US05430572 (76 worldwide citation)

High output power, high gain, and low noise are achieved in a two-stage optical amplifier, suitable for use as a repeater for a long haul lightwave communication system, in accordance with the principles of the invention, by employing a first amplifying stage having a signal gain sufficiently small ...


2
Joseph D Evankow Jr: Semiconductor multipactor device. The United States of America represented by the Secretary of the Army, Anthony T Lane, Jeremiah G Murray, Robert A Maikis, July 22, 1986: US04602190 (1 worldwide citation)

The placement of one or a pair of suitably biased thin semiconductor epital layers on the secondary emission surface of a multipactor device provides an improvement of devices which operate in accordance with the principle of multipactoring. A multipactor device is disclosed having a multipactor reg ...


3
Edward Collett, Joseph D Evankow, Van E Kelly: Method and device to calculate and display the transformation of optical polarization states. Michaelson And Wallace, Parkway 109 Office Center, November 20, 2003: US20030214713-A1

We have invented a set of calculation and display methods for polarized light using a representation that we call the Hybrid Polarization Sphere (HPS). The HPS incorporates the Poincar Sphere and its dual, the Observable Polarization Sphere (OPS). The HPS uses a four-pole spherical polar coordinate ...