JPS5790601A - Fiber unit for optical submarine cable - Google Patents

Fiber unit for optical submarine cable

Info

Publication number
JPS5790601A
JPS5790601A JP55165816A JP16581680A JPS5790601A JP S5790601 A JPS5790601 A JP S5790601A JP 55165816 A JP55165816 A JP 55165816A JP 16581680 A JP16581680 A JP 16581680A JP S5790601 A JPS5790601 A JP S5790601A
Authority
JP
Japan
Prior art keywords
unit
optical fiber
cable
optical
submarine cable
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
JP55165816A
Other languages
Japanese (ja)
Inventor
Hitoshi Yamamoto
Taiichiro Nakai
Yoshihiro Ejiri
Makoto Nunokawa
Koichi Tachikura
Yasuhiko Niino
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.)
KDDI Corp
Original Assignee
Kokusai Denshin Denwa KK
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 Kokusai Denshin Denwa KK filed Critical Kokusai Denshin Denwa KK
Priority to JP55165816A priority Critical patent/JPS5790601A/en
Publication of JPS5790601A publication Critical patent/JPS5790601A/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)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Insulated Conductors (AREA)

Abstract

PURPOSE:To reduce the tension to be applied upon optical fibers by providing plural pieces of optical fiber cores twisted and disposed at a constant pitch around a buffer layer 7 consisting of a material of extremely small Young's modulus. CONSTITUTION:An optical fiber unit is contained in a pressure-resistant construction 2 of an optical submarine cable, and if the unit and the cable are held in tight adhesion with each other, the elongating and contracting movements of the cable and the unit will be the same. In the unit, optical fiber cores 1 twisted at a constant pitch around a buffer layer 7 consisting of a material of extremely small Young's modulus sink radially into the layer 7 when the unit is exerted with elongation, by which surplus length is produced and this results in that the elongation generated in the cores 1 is relieved. With such constitution, the tension to be applied upon the optical fiber cores is reduced.
JP55165816A 1980-11-27 1980-11-27 Fiber unit for optical submarine cable Pending JPS5790601A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55165816A JPS5790601A (en) 1980-11-27 1980-11-27 Fiber unit for optical submarine cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55165816A JPS5790601A (en) 1980-11-27 1980-11-27 Fiber unit for optical submarine cable

Publications (1)

Publication Number Publication Date
JPS5790601A true JPS5790601A (en) 1982-06-05

Family

ID=15819533

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55165816A Pending JPS5790601A (en) 1980-11-27 1980-11-27 Fiber unit for optical submarine cable

Country Status (1)

Country Link
JP (1) JPS5790601A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4600268A (en) * 1982-12-15 1986-07-15 Standard Telephones And Cables Public Limited Co. Cable for telecommunications purposes and a method of manufacturing the same
US5115485A (en) * 1987-05-04 1992-05-19 Rochester Corporation Cable for housing parallelly oriented optical fibers and method and apparatus for producing the same
WO2020170273A1 (en) * 2019-02-20 2020-08-27 Hampidjan Hf. Improved high resolution headline sonar cable

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4600268A (en) * 1982-12-15 1986-07-15 Standard Telephones And Cables Public Limited Co. Cable for telecommunications purposes and a method of manufacturing the same
US5115485A (en) * 1987-05-04 1992-05-19 Rochester Corporation Cable for housing parallelly oriented optical fibers and method and apparatus for producing the same
WO2020170273A1 (en) * 2019-02-20 2020-08-27 Hampidjan Hf. Improved high resolution headline sonar cable

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