Aa. Verevkin et al., A FOURIER SPECTROMETER FOR STUDYING THE RADIATION FROM JOSEPHSON-JUNCTIONS, Instruments and experimental techniques, 37(6), 1994, pp. 735-738
The paper describes a Fourier spectrometer designed to study the radia
tion generated by a Josephson junction in the millimeter and FIR bands
with a resolution of approximate to 2 GHz in the two-pass mode and ap
proximate to 1 GHz in the multipass mode. A feature is that one Joseph
son junctions operates as both generator and detector at the same time
.