Optical waveguides – Optical transmission cable – Loose tube type
Patent
1991-10-30
1993-03-30
Ullah, Akm E.
Optical waveguides
Optical transmission cable
Loose tube type
G02B 514, G02B 644
Patent
active
051990962
ABSTRACT:
A steam-resistant optical fiber cable (20) includes a core (21) comprising a plurality of optical fiber ribbons (22,22) disposed within a tubular member (30) comprised of a high temperature resistant material. The tubular member is disposed within a hermetic sealing member (40) which comprises a metal of low electrochemical activity having a sealed seam. An outer jacket (50) is disposed about the hermetic sealing member and in a preferred embodiment is characterized by resistance to degradation in high temperature, high humidity environments. The core may be unfilled or filled with a waterblocking material and in a preferred embodiment, a waterblocking member is interposed between the tubular member and the hermetic sealing member.
REFERENCES:
patent: 4078853 (1978-03-01), Kempf et al.
patent: 4109099 (1978-08-01), Dembiak et al.
patent: 4896940 (1990-01-01), Kathiresan et al.
patent: 4974926 (1990-12-01), Blee et al.
patent: 5000539 (1991-03-01), Gareis
McKay, et al., Qualification Procedure For Fiber Optic Cable Design, Int. Wire & Cable Symposium Proceedings 1986, pp. 307-313.
Kathiresan Krishnaswamy
Panuska Andrew J.
Santana Manuel R.
Hayes, Jr. D. E.
Somers E. W.
Ullah Akm E.
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