JPS5893911U - Low-loss directional coupling for fiber optics - Google Patents

Low-loss directional coupling for fiber optics

Info

Publication number
JPS5893911U
JPS5893911U JP1982142700U JP14270082U JPS5893911U JP S5893911 U JPS5893911 U JP S5893911U JP 1982142700 U JP1982142700 U JP 1982142700U JP 14270082 U JP14270082 U JP 14270082U JP S5893911 U JPS5893911 U JP S5893911U
Authority
JP
Japan
Prior art keywords
fiber
coupling
coupling according
turns
low
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
JP1982142700U
Other languages
Japanese (ja)
Inventor
ゲリ−・ステフエン・ダツク
フレデリツク・デビツド・キング
Original Assignee
ノ−ザン・テレコム・リミテツド
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 ノ−ザン・テレコム・リミテツド filed Critical ノ−ザン・テレコム・リミテツド
Publication of JPS5893911U publication Critical patent/JPS5893911U/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
    • G02B6/24—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
    • 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
    • G02B6/245—Removing protective coverings of light guides before coupling

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Optical Communication System (AREA)
  • Mechanical Coupling Of Light Guides (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は光を取出すためのカップリングの模式図である
。第２図は光を入れるためのカップリングの模式図であ
る。第３図は主ファイバの中の信号を監視することを目
的として光を取出すカップリングの模式図である。第４
図はタップ比と主ファイバのまわりのタップファイバ巻
数との関係ヲ示す曲線である。第５図はカップリングの
２ケ所の部分における出力を表わす。 １０・・・主ファイバ（トランクファイノリ、１１およ
び１６ａ・・・レーザ入力装置、１２および１５・・・
検出器、１３．１６および１９・・・タップファイバ、
１８ａおよび２０・・・監視装置。 譜上−−−−−−−−− ＝−ｆ’ｙｗ １−１〜゛FIG. 1 is a schematic diagram of a coupling for extracting light. FIG. 2 is a schematic diagram of a coupling for letting in light. FIG. 3 is a schematic diagram of a coupling to extract light for the purpose of monitoring signals in the main fiber. Fourth
The figure is a curve showing the relationship between the tap ratio and the number of tap fiber turns around the main fiber. FIG. 5 represents the output at two parts of the coupling. 10... Main fiber (trunk fiber, 11 and 16a... Laser input device, 12 and 15...
Detector, 13.16 and 19... tap fiber,
18a and 20...monitoring device. Music ---------=-f'yw 1-1～゛

Claims (1)

【実用新案登録請求の範囲】 １　第１光フアイバと第２光フアイバとを備えた光ファ
イバのための低損失指向性カップリングにおいて、該第
１のファイバがカップリングを介して略直線的に延びて
おり、該第２フアイバ１３．１６．１９が該第１フアイ
バ１０のまわりに所定の回数だけ巻かれ、両ファイバの
クラッド層が除去されていて両ファイバの光伝達コアが
接触していることを特徴とするカップリング。 ２　該第２フアイバ１６の入力端に発光装置１６ａが設
けられている、該第１フアイバの中に光を入れるように
結合するための実用新案登録請求の範囲第１項記載のカ
ップリング。 ３　該第２フアイバ１６の出力端に監視装置１８ａが設
けられている実用新案登録請求の範囲第２項記載のカッ
プリング。 ４　該第２フアイバ１３の出力端に検出器１５が設けら
れている、該第１フアイバから光を取出すように結合す
るための実用新案登録請求の範囲第１項記載のカップリ
ング。 ５　該第２フアイバ１９の出力端に監視装置２０が設け
られている、該第１フアイバ中の信号を監視するための
実用新案登録請求の範囲第１項記載のカップリング。 ６　該第２フアイバ１３の巻数が該第１フアイバ１０の
出力と該第２フアイバ１３の出力の比の希望値に依存し
て変わり、巻数が増加すると核化が減少する実用新案登
録請求の範囲第４項記載のカップリング。 ７　該第２フアイバ１６の巻数が該第１フアイバ１０の
入力と該第２フアイバ１６の入力の比の希望値に依存し
て変わり、巻数が増加すると核化が減少する実用新案登
録請求の範囲第２項記載のカップリング。　　　　゛[Claims for Utility Model Registration] 1. A low-loss directional coupling for an optical fiber comprising a first optical fiber and a second optical fiber, in which the first fiber extends substantially linearly through the coupling. the second fiber 13, 16, 19 is wound around the first fiber 10 a predetermined number of times, the cladding layers of both fibers are removed and the light transmission cores of both fibers are in contact. A coupling characterized by: 2. The coupling according to claim 1 for coupling light into the first fiber, wherein the input end of the second fiber 16 is provided with a light emitting device 16a. 3. The coupling according to claim 2, wherein a monitoring device 18a is provided at the output end of the second fiber 16. 4. A coupling according to claim 1 for coupling light out of the first fiber, in which a detector 15 is provided at the output end of the second fiber 13. 5. A coupling according to claim 1 for monitoring the signal in the first fiber, in which a monitoring device 20 is provided at the output end of the second fiber 19. 6. A utility model registration claim in which the number of turns of the second fiber 13 changes depending on the desired ratio of the output of the first fiber 10 and the output of the second fiber 13, and as the number of turns increases, nucleation decreases. Coupling according to item 4. 7. A utility model registration claim in which the number of turns of the second fiber 16 changes depending on the desired ratio of the input of the first fiber 10 and the input of the second fiber 16, and as the number of turns increases, nucleation decreases. Coupling according to item 2.゛
JP1982142700U 1978-04-10 1982-09-22 Low-loss directional coupling for fiber optics Pending JPS5893911U (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA300,734A CA1076858A (en) 1978-04-10 1978-04-10 Low loss directional coupling for optical fibres
CA300734 1978-04-10

Publications (1)

Publication Number Publication Date
JPS5893911U true JPS5893911U (en) 1983-06-25

Family

ID=4111190

Family Applications (2)

Application Number Title Priority Date Filing Date
JP4213079A Pending JPS54145154A (en) 1978-04-10 1979-04-09 Lowwloss directional coupling for optical fibers
JP1982142700U Pending JPS5893911U (en) 1978-04-10 1982-09-22 Low-loss directional coupling for fiber optics

Family Applications Before (1)

Application Number Title Priority Date Filing Date
JP4213079A Pending JPS54145154A (en) 1978-04-10 1979-04-09 Lowwloss directional coupling for optical fibers

Country Status (6)

Country Link
JP (2) JPS54145154A (en)
BE (1) BE875316A (en)
CA (1) CA1076858A (en)
DE (1) DE2913794A1 (en)
FR (1) FR2422972A1 (en)
GB (1) GB2018460B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5830703A (en) * 1981-08-17 1983-02-23 Sumitomo Electric Ind Ltd Fiber having silicone resin clad for optical communication
US4802723A (en) * 1982-09-09 1989-02-07 American Telephone And Telegraph Company, At&T Bell Laboratories Optical fiber tap
GB2191597B (en) * 1986-02-21 1989-11-15 Plessey Co Plc Interwined monomode fibre-optic coupler.
DE4030068C2 (en) * 1990-09-22 1994-04-14 Deutsche Aerospace Device for coupling out light

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4843947A (en) * 1971-10-08 1973-06-25

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1470539A (en) * 1974-06-06 1977-04-14 Standard Telephones Cables Ltd Optical fibre optical power dividers
GB1525985A (en) * 1974-11-11 1978-09-27 Western Electric Co Arrangements for tapping signal power from optical fibre waveguides
DE2456619A1 (en) * 1974-11-29 1976-08-12 Siemens Ag ARRANGEMENT OF BRANCHES ON MESSAGE TRANSMISSION LINES WITH OPTICAL FIBERS
CH607066A5 (en) * 1975-12-05 1978-11-30 Comp Generale Electricite
GB1493660A (en) * 1975-12-16 1977-11-30 Standard Telephones Cables Ltd Optical waveguide power dividers
JPS5283237A (en) * 1975-12-30 1977-07-12 Fujikura Ltd Shunt connection of plastic-cladding optical fibers
US4083625A (en) * 1976-08-02 1978-04-11 Corning Glass Works Optical fiber junction device
DE2922022A1 (en) * 1979-05-30 1980-12-11 Wmf Wuerttemberg Metallwaren COFFEE MACHINE

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4843947A (en) * 1971-10-08 1973-06-25

Also Published As

Publication number Publication date
CA1076858A (en) 1980-05-06
FR2422972A1 (en) 1979-11-09
GB2018460B (en) 1982-06-23
DE2913794C2 (en) 1990-04-26
JPS54145154A (en) 1979-11-13
BE875316A (en) 1979-10-04
DE2913794A1 (en) 1979-10-18
GB2018460A (en) 1979-10-17

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