Title:
SMALL-DIAMETER SUBMARINE OPTICAL CABLE AND METHOD FOR CONSTRUCTING THIS CABLE AND MACHINE FOR LAYING/ SIMULTANEOUS EMBEDDING OF SMALL-DIAMETER SUBMARINE OPTICAL CABLE
Document Type and Number:
Japanese Patent JPH02183208
Kind Code:
A
Abstract:
PURPOSE:To construct the submarine optical cable system which has sufficient reliability and is inexpensive by laying/simultaneous embedding the cable by using an embedding machine housing the small-diameter submarine optical cable which can be taken up on a cable drum. CONSTITUTION:The non-repeating optical cable is formed by constituting the cable of, for example, coated tape optical fibers 2, a running water preventive resin 3, a pressure resistant pipe 4, and an insulating sheath 5 and using a metallic pipe having several mm outside diameter for the pressure resistant pipe 4. Since the diameter of the cable is small, the long-sized cable can be wound on the drum and can be housed in the towing type embedding machine 11. The drum winding small-diameter submarine optical cable 12 can be embedded without rupturing the cable or without allowing the tension to remain therein by providing the embedding machine 11 with an automatic control mechanism which lets off the cable 12 according to the moving quantity of embedding in the laying/simultaneous embedding. The need for large-sized facilities, such as exclusive laying ships and cable pans, is eliminated in this way and moreover, the reduction of the cable cost and construction cost is possible. The construction of the submarine transmission path having the high reliability is thus possible.
Inventors:
YOSHIZAWA NOBUYUKI
NEGISHI YUKIYASU
TAKAZAWA HISAYOSHI
NEGISHI YUKIYASU
TAKAZAWA HISAYOSHI
Application Number:
JP247889A
Publication Date:
July 17, 1990
Filing Date:
January 09, 1989
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE
International Classes:
G02B6/44; G02B6/50; H01B7/14; H02G1/10; (IPC1-7): G02B6/44; H01B7/14; H02G1/10
Domestic Patent References:
| JPS5199032A | 1976-09-01 | |||
| JPS5392492A | 1978-08-14 | |||
| JPS56103916A | 1981-08-19 | |||
| JPS63100313A | 1988-05-02 | |||
| JPS54130038A | 1979-10-09 | |||
| JPS62249108A | 1987-10-30 |
Attorney, Agent or Firm:
Takehiko Suzue (2 outside)