JPS54153042A - Duct type cable and method of using it - Google Patents

Duct type cable and method of using it

Info

Publication number
JPS54153042A
JPS54153042A JP6147878A JP6147878A JPS54153042A JP S54153042 A JPS54153042 A JP S54153042A JP 6147878 A JP6147878 A JP 6147878A JP 6147878 A JP6147878 A JP 6147878A JP S54153042 A JPS54153042 A JP S54153042A
Authority
JP
Japan
Prior art keywords
cable
optical fibers
laying
repair
curvature
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
JP6147878A
Other languages
Japanese (ja)
Inventor
Shinichi Yonechi
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.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries Ltd
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 Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP6147878A priority Critical patent/JPS54153042A/en
Publication of JPS54153042A publication Critical patent/JPS54153042A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To make laying and repair of optical fibers easy by specifying the length of the cable comprising inserting optical fibers in the segments sectioned to a plurality within the cross section the friction coefficients between the optical fibers and the segment wall faces, the mean radius of curvature of the cable after laying to the specific conditions.
CONSTITUTION: When the radius of curvature in the sense that the twist pitches of optical fiers 3 or linear form 4 and the bends which a duct type cable receive after laying are combined is let to be R, the friction coefficient between the inside surface of a hollow pipe 1 and the optical fibers to be μ, and the cable length to be S, these are so set as to satisfy μS/R<8. Since this makes possible the movement of the optical fibers in the duct in the cable after laying of the cable, laying and repair of the novel optical fibers may be readily perfomred.
COPYRIGHT: (C)1979,JPO&Japio
JP6147878A 1978-05-22 1978-05-22 Duct type cable and method of using it Pending JPS54153042A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6147878A JPS54153042A (en) 1978-05-22 1978-05-22 Duct type cable and method of using it

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6147878A JPS54153042A (en) 1978-05-22 1978-05-22 Duct type cable and method of using it

Publications (1)

Publication Number Publication Date
JPS54153042A true JPS54153042A (en) 1979-12-01

Family

ID=13172207

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6147878A Pending JPS54153042A (en) 1978-05-22 1978-05-22 Duct type cable and method of using it

Country Status (1)

Country Link
JP (1) JPS54153042A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63124005A (en) * 1986-11-13 1988-05-27 Sumitomo Electric Ind Ltd Method of forced-feeding and inserting-through for laying optical fiber cable in duct line
JPH05249321A (en) * 1982-11-08 1993-09-28 British Telecommun Plc <Bt> Method for insertion of optical fiber

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05249321A (en) * 1982-11-08 1993-09-28 British Telecommun Plc <Bt> Method for insertion of optical fiber
JPS63124005A (en) * 1986-11-13 1988-05-27 Sumitomo Electric Ind Ltd Method of forced-feeding and inserting-through for laying optical fiber cable in duct line

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