Data transmission in the far infrared range

An investigation is made of the possibility of using superconducting Josephson weak links (bridges or point contacts) for data transmission and reception in the frequency band ~10¹² Hz in the far infrared region. It is shown that a signal current ~(10^–2–10^–3)I_c is induced in real superconducting point contacts (I_c is the critical superconducting current). Such a signal is considerably greater than the superconducting contact noise or spontaneous noise of the laser medium at the carrier frequency.