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Archive | 1986

Optical time-domain reflectometer using heterodyne reception

Friedrich-Karl Beckmann; Wolfgang Hoppe; Reinhard Knochel


Archive | 1987

Optical time domain reflectometer with heterodyne reception

Friedrich-Karl Beckmann; Wolfgang Hoppe; Reinhard Knochel; Jurgen Kordts


Archive | 1990

Heterodyne optical time domain reflectometer

Manfred Dr Fuchs; Wolfgang Hoppe; Friedrich-Karl Beckmann; Ernst Prof Dr Brinkmeyer; Wolfgang Brennecke


Archive | 1986

Optical branching device using a liquid crystal

Friedrich K. Beckmann; Horst Dotsch; Wolfgang Hoppe


Archive | 1983

Device for microwave transmission between two bodies which are rotatable relative to each other

Friedrich K. Beckmann; Wolfgang Hoppe; Wolfgang Meyer


Archive | 1987

Optical time domain reflectometer with heterodyn-reception

Friedrich-Karl Beckmann; Wolfgang Hoppe; Reinhard Knochel; Jurgen Kordts


Archive | 1984

Optical branching device

Friedrich-Karl Beckmann; Horst Dotsch; Wolfgang Hoppe


Archive | 1993

Miniaturized squid module having an intermediate super conducting support for connecting squid input terminals to gradiometer wires

Bernd David; Olaf Dössel; Wilfried Edeler; Wolfgang Hoppe; Rolf Kobs; Johann E. W. Kruger; Kai-Michael Lüdeke; Gert Rabe


Archive | 1986

Optical time-domaine reflectometer with heterodyne receiving

Friedrich-Karl Beckmann; Wolfgang Hoppe; Rheinhard Dr. Knocher


Archive | 1985

Arrangement for stabilizing the emission frequency of a semiconductor laser

Reinhard Dr Knoechel; Wolfgang Hoppe

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