JPS55134803A - Making method of optical fiber branching circuit - Google Patents

Making method of optical fiber branching circuit

Info

Publication number
JPS55134803A
JPS55134803A JP4203479A JP4203479A JPS55134803A JP S55134803 A JPS55134803 A JP S55134803A JP 4203479 A JP4203479 A JP 4203479A JP 4203479 A JP4203479 A JP 4203479A JP S55134803 A JPS55134803 A JP S55134803A
Authority
JP
Japan
Prior art keywords
fibers
outside
fusion
pipe
cores
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
JP4203479A
Other languages
Japanese (ja)
Other versions
JPH0210401B2 (en
Inventor
Giyu Kashima
Fumihiro Nihei
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 JP4203479A priority Critical patent/JPS55134803A/en
Publication of JPS55134803A publication Critical patent/JPS55134803A/en
Publication of JPH0210401B2 publication Critical patent/JPH0210401B2/ja
Granted 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
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
    • G02B6/2856—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers formed or shaped by thermal heating means, e.g. splitting, branching and/or combining elements

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Coupling Of Light Guides (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)

Abstract

PURPOSE:To lower cost, make productivity high and make possible branching to three or more fibers by passing the exposed cores in a glass pipe, into which a number of fibers can be passed, and applying tensile force while heating the same from outside to melt. CONSTITUTION:Two optical fibers 4 whose cores are exposed are passed in a pipe 11 made of glass. While the pipe is being heated from the outside, tensile force is applied at the same time in the direction of the arrow 8. The two cores fusion-bond to each other and the pipe 11 fusion-bond as well, thereby providing the taper-form fusion-bonded core. Where this outside diamter becomes equal to the outside diameter of the original cores, it is cut. After this, the other core 10 is joined and is fusion-bonded while these are being again heated. As a result of this, the core diameter increases gradually and is branched to two fibers and therefore the branching circuit of less insertion losses, through which light is difficult to be radiated to the outside, may be made. Since there is no polishing work, the cost is low and even the branching circuit of more than three fibers may be readily manufactured.
JP4203479A 1979-04-09 1979-04-09 Making method of optical fiber branching circuit Granted JPS55134803A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4203479A JPS55134803A (en) 1979-04-09 1979-04-09 Making method of optical fiber branching circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4203479A JPS55134803A (en) 1979-04-09 1979-04-09 Making method of optical fiber branching circuit

Publications (2)

Publication Number Publication Date
JPS55134803A true JPS55134803A (en) 1980-10-21
JPH0210401B2 JPH0210401B2 (en) 1990-03-08

Family

ID=12624869

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4203479A Granted JPS55134803A (en) 1979-04-09 1979-04-09 Making method of optical fiber branching circuit

Country Status (1)

Country Link
JP (1) JPS55134803A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57186730A (en) * 1981-05-13 1982-11-17 Nippon Telegr & Teleph Corp <Ntt> Manufacture of optical distributor
JPS58117515A (en) * 1982-01-05 1983-07-13 Toshiba Corp Optical demultiplexer
FR2524154A1 (en) * 1982-03-11 1983-09-30 Int Standard Electric Corp
FR2564984A1 (en) * 1984-05-23 1985-11-29 Commissariat Energie Atomique METHOD FOR CONNECTING OPTICAL FIBERS AND CONNECTION DEVICES OBTAINED ACCORDING TO THIS METHOD
JPS61245115A (en) * 1985-04-19 1986-10-31 フィリップス　エレクトロニクス　ネムローゼ　フェンノートシャップ Passive fiber optical element and manufacture thereof
JPH03505931A (en) * 1988-07-12 1991-12-19 ブリテイッシュ・テレコミュニケーションズ・パブリック・リミテッド・カンパニー light star coupler

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53124450A (en) * 1977-04-06 1978-10-30 Showa Electric Wire & Cable Co Production method of separating point of light fiber

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53124450A (en) * 1977-04-06 1978-10-30 Showa Electric Wire & Cable Co Production method of separating point of light fiber

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57186730A (en) * 1981-05-13 1982-11-17 Nippon Telegr & Teleph Corp <Ntt> Manufacture of optical distributor
JPS58117515A (en) * 1982-01-05 1983-07-13 Toshiba Corp Optical demultiplexer
FR2524154A1 (en) * 1982-03-11 1983-09-30 Int Standard Electric Corp
FR2564984A1 (en) * 1984-05-23 1985-11-29 Commissariat Energie Atomique METHOD FOR CONNECTING OPTICAL FIBERS AND CONNECTION DEVICES OBTAINED ACCORDING TO THIS METHOD
JPS61245115A (en) * 1985-04-19 1986-10-31 フィリップス　エレクトロニクス　ネムローゼ　フェンノートシャップ Passive fiber optical element and manufacture thereof
JPH03505931A (en) * 1988-07-12 1991-12-19 ブリテイッシュ・テレコミュニケーションズ・パブリック・リミテッド・カンパニー light star coupler

Also Published As

Publication number Publication date
JPH0210401B2 (en) 1990-03-08

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