JPS57185404A - Submarine optical cable - Google Patents

Submarine optical cable

Info

Publication number
JPS57185404A
JPS57185404A JP7019281A JP7019281A JPS57185404A JP S57185404 A JPS57185404 A JP S57185404A JP 7019281 A JP7019281 A JP 7019281A JP 7019281 A JP7019281 A JP 7019281A JP S57185404 A JPS57185404 A JP S57185404A
Authority
JP
Japan
Prior art keywords
wire
layer
optical fiber
outside
twist steel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP7019281A
Other languages
Japanese (ja)
Inventor
Nobuyuki Yoshizawa
Shinya Kojima
Hiroshi Ishihara
Tetsuo Yabuta
Yukiyasu Negishi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP7019281A priority Critical patent/JPS57185404A/en
Publication of JPS57185404A publication Critical patent/JPS57185404A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G02B6/4415—Cables for special applications
    • G02B6/4427—Pressure resistant cables, e.g. undersea cables

Landscapes

  • Physics & Mathematics (AREA)
  • Insulated Conductors (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)

Abstract

PURPOSE:To ensure the stable transmission properties for a long period of time, by providing the twist steel wires with the twisting directions opposite to each other between the inner and outer layers and at the outside a pressure pipe that protects an optical fiber unit. CONSTITUTION:A metallic pressure pipe 2 is provided around an optical fiber unit 1 to protect the optical fiber. A twist steel wire 3 for outer layer is set at the outer circumference of the pipe 2, and another twist steel wire 4 having the twisting direction opposite to the wire 3 is set at the outside of the wire 3. A soft plastic layer 5 is provided as an elastic material layer at the outside of the wire 4. In addition, a plastic sheath layer 6 of low density and another plastic sheath layer 7 of high density are formed by the injection molding or the like process. As a result, the extension of a cable can be minimized, and the stable transmission properties is secured for a long period of time.
JP7019281A 1981-05-12 1981-05-12 Submarine optical cable Pending JPS57185404A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7019281A JPS57185404A (en) 1981-05-12 1981-05-12 Submarine optical cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7019281A JPS57185404A (en) 1981-05-12 1981-05-12 Submarine optical cable

Publications (1)

Publication Number Publication Date
JPS57185404A true JPS57185404A (en) 1982-11-15

Family

ID=13424410

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7019281A Pending JPS57185404A (en) 1981-05-12 1981-05-12 Submarine optical cable

Country Status (1)

Country Link
JP (1) JPS57185404A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6124706U (en) * 1984-07-19 1986-02-14 日本ケ−ブル・システム株式会社 toothed cable

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5499646A (en) * 1977-12-16 1979-08-06 Post Office Submarine communication cable

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5499646A (en) * 1977-12-16 1979-08-06 Post Office Submarine communication cable

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6124706U (en) * 1984-07-19 1986-02-14 日本ケ−ブル・システム株式会社 toothed cable

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