JPS5746207A - Compound optical fiber - Google Patents

Compound optical fiber

Info

Publication number
JPS5746207A
JPS5746207A JP55123228A JP12322880A JPS5746207A JP S5746207 A JPS5746207 A JP S5746207A JP 55123228 A JP55123228 A JP 55123228A JP 12322880 A JP12322880 A JP 12322880A JP S5746207 A JPS5746207 A JP S5746207A
Authority
JP
Japan
Prior art keywords
optical fiber
elemental
optical fibers
quartz
high loss
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
JP55123228A
Other languages
Japanese (ja)
Inventor
Fumihiro Nihei
Hisashi Murata
Eiji Maekawa
Shinji Nagasawa
Satoshi Hatano
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 JP55123228A priority Critical patent/JPS5746207A/en
Publication of JPS5746207A publication Critical patent/JPS5746207A/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
    • 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
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/02042—Multicore optical fibres

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)

Abstract

PURPOSE:To prevent a crosstalk caused by coupling of an electromagnetic field between elemental optical fibers, by providing a high loss layer on the outside of elemental optical fiber, in a compound optical fiber consisting of many elemental optical fibers. CONSTITUTION:High loss layers 23a-23c, 26, 29 are provided on the outside of elemental optical fibers consisting of cores 21a-21c, 24, 27, and clads 22a-22c, 25, 28. A compound optical fiber is formed by arraying the elemental optical fibers in a triangular shape, a ribbon shape, or in a circular shape together with a dummy fiber 30, and melt-sticking the contact part. As for thickness of 23a, etc., several mum-ten and several mum is suitable, and this layer is constituted of a high loss material whose optical loss becomes >= several hundred dB/m. When the elemental optical fiber is produced by use of quartz, quartz glass containing iron, cobalt, copper, titanium, etc. whose melting point and expansion coefficient are almost same as those of quartz is desirable as said material.
JP55123228A 1980-09-05 1980-09-05 Compound optical fiber Pending JPS5746207A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55123228A JPS5746207A (en) 1980-09-05 1980-09-05 Compound optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55123228A JPS5746207A (en) 1980-09-05 1980-09-05 Compound optical fiber

Publications (1)

Publication Number Publication Date
JPS5746207A true JPS5746207A (en) 1982-03-16

Family

ID=14855365

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55123228A Pending JPS5746207A (en) 1980-09-05 1980-09-05 Compound optical fiber

Country Status (1)

Country Link
JP (1) JPS5746207A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6379966A (en) * 1986-09-20 1988-04-09 Nippon Steel Corp Continuous composite coating equipment for strip
JPS63303826A (en) * 1987-06-01 1988-12-12 Canon Inc Production of cluster type distributed index optical element
JPS6465259A (en) * 1987-09-04 1989-03-10 Nippon Steel Corp Continuous composite coating equipment for band plate
JP2011227249A (en) * 2010-04-19 2011-11-10 Mitsubishi Cable Ind Ltd Optical fiber bundle
US20120057841A1 (en) * 2010-09-01 2012-03-08 Luna Innovation Incorporated Registration of an extended reference for parameter measurement in an optical sensing system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6379966A (en) * 1986-09-20 1988-04-09 Nippon Steel Corp Continuous composite coating equipment for strip
JPS63303826A (en) * 1987-06-01 1988-12-12 Canon Inc Production of cluster type distributed index optical element
JPS6465259A (en) * 1987-09-04 1989-03-10 Nippon Steel Corp Continuous composite coating equipment for band plate
JP2011227249A (en) * 2010-04-19 2011-11-10 Mitsubishi Cable Ind Ltd Optical fiber bundle
US20120057841A1 (en) * 2010-09-01 2012-03-08 Luna Innovation Incorporated Registration of an extended reference for parameter measurement in an optical sensing system
US8842963B2 (en) * 2010-09-01 2014-09-23 Intuitive Surgical Operations, Inc. Reducing reflection at termination of optical fiber in a small volume

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