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Superconducting telecommunication cable studies in Japan

✍ Scribed by H. Yoshikiyo; S. Yoshikiyo; K. Noda

Publisher: Elsevier Science
Year: 1977
Tongue: English
Weight: 735 KB
Volume: 17
Category: Article
ISSN: 0011-2275
DOI: 10.1016/0011-2275(77)90147-3

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✦ Synopsis

Large capacity and long distance telecommunications media are fields in which full use of the excellent properties of superconducting coaxial cables may be applied. By employing a new conductor structure, characteristics of a 1.6 mm miniature superconducting coaxial pair were remarkably improved in a short time. Features such as low-loss (of the order of 1 dB km -l at 1 GHz), broad-bandand low cross-talk etc. were demonstrated for these coaxial pairs. In cryogenic envelope studies, the 20-200 m long envelopes have been manufactured for evaluating thermal insulation and investigating cable cooling performance. Cooling experiments on the envelope, including cable splice, are now in progress.

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