JPS57169701A - Optical fiber - Google Patents

Optical fiber

Info

Publication number
JPS57169701A
JPS57169701A JP56055044A JP5504481A JPS57169701A JP S57169701 A JPS57169701 A JP S57169701A JP 56055044 A JP56055044 A JP 56055044A JP 5504481 A JP5504481 A JP 5504481A JP S57169701 A JPS57169701 A JP S57169701A
Authority
JP
Japan
Prior art keywords
core
mode
guided
modes
he11y
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.)
Granted
Application number
JP56055044A
Other languages
Japanese (ja)
Other versions
JPS5938562B2 (en
Inventor
Kenichi Kitayama
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 JP56055044A priority Critical patent/JPS5938562B2/en
Publication of JPS57169701A publication Critical patent/JPS57169701A/en
Publication of JPS5938562B2 publication Critical patent/JPS5938562B2/en
Expired 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
    • G02B6/441—Optical cables built up from sub-bundles

Landscapes

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

Abstract

PURPOSE:To eliminate the disturbance of phase even when mode coupling exists between two guided modes, by attenuating either of two guided modes. CONSTITUTION:A main core 1 consisting of a double refraction fiber and a subcore 2 which is adjacent to and in parallel with the main core 1 are provided. Two lowest modes having polarization directions orthogonal to each other are defined as an HE11<x> mode and an HE11Y mode, and either of two guided modes of the core 1 is coupled with the guided mode of the core 2, and a large loss is given to the core 2, and thus, the energy transferred from the core 1 to the core 2 by mode coupling is attenuated. As a result, one of the HE11<x> mode and the HE11Y mode is eliminated from the core 1, and only the other mode is guided to the core 1.
JP56055044A 1981-04-14 1981-04-14 optical fiber Expired JPS5938562B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56055044A JPS5938562B2 (en) 1981-04-14 1981-04-14 optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56055044A JPS5938562B2 (en) 1981-04-14 1981-04-14 optical fiber

Publications (2)

Publication Number Publication Date
JPS57169701A true JPS57169701A (en) 1982-10-19
JPS5938562B2 JPS5938562B2 (en) 1984-09-18

Family

ID=12987661

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56055044A Expired JPS5938562B2 (en) 1981-04-14 1981-04-14 optical fiber

Country Status (1)

Country Link
JP (1) JPS5938562B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0223306A (en) * 1988-07-12 1990-01-25 Sumitomo Electric Ind Ltd Polarization maintaining optical fiber
KR100906045B1 (en) 2001-05-09 2009-07-03 하마마츠 포토닉스 가부시키가이샤 Optical lens-use base material, optical lens, and method of producing optical lens

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0223306A (en) * 1988-07-12 1990-01-25 Sumitomo Electric Ind Ltd Polarization maintaining optical fiber
KR100906045B1 (en) 2001-05-09 2009-07-03 하마마츠 포토닉스 가부시키가이샤 Optical lens-use base material, optical lens, and method of producing optical lens

Also Published As

Publication number Publication date
JPS5938562B2 (en) 1984-09-18

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