JPS5756813A - Vaiable optical branching circuit for single mode fiber - Google Patents

Vaiable optical branching circuit for single mode fiber

Info

Publication number
JPS5756813A
JPS5756813A JP13186480A JP13186480A JPS5756813A JP S5756813 A JPS5756813 A JP S5756813A JP 13186480 A JP13186480 A JP 13186480A JP 13186480 A JP13186480 A JP 13186480A JP S5756813 A JPS5756813 A JP S5756813A
Authority
JP
Japan
Prior art keywords
light beam
prism
pitch
constitution
optical
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
JP13186480A
Other languages
Japanese (ja)
Other versions
JPS6130247B2 (en
Inventor
Masatoshi Saruwatari
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 JP13186480A priority Critical patent/JPS5756813A/en
Publication of JPS5756813A publication Critical patent/JPS5756813A/en
Publication of JPS6130247B2 publication Critical patent/JPS6130247B2/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
    • G02B6/27—Optical coupling means with polarisation selective and adjusting means
    • G02B6/2706—Optical coupling means with polarisation selective and adjusting means as bulk elements, i.e. free space arrangements external to a light guide, e.g. polarising beam splitters
    • 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
    • G02B6/27—Optical coupling means with polarisation selective and adjusting means
    • G02B6/2753—Optical coupling means with polarisation selective and adjusting means characterised by their function or use, i.e. of the complete device
    • G02B6/2773—Polarisation splitting or combining

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Measuring Magnetic Variables (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)

Abstract

PURPOSE:To prevent a Fresnel reflection loss, and to reduce an optical axis shift caused by moving, and a coupling loss, by forming a prism, a lens and a branching fiber in one body so as to be rotatable. CONSTITUTION:On the projecting surface of an elliptical core optical fiber 16 whose polarized state is maintained, an incident surface of a focusing lens 19 whose length is slightly shorter 1/2 pitch is stuck by use of a light source adhesive agent, etc. so as to be formed in one body. On the other hand, a polarizing and separating prism 7 consisting of a uniaxial double refraction crystal, which has its optical axis on the surface containing an advance direction of a light beam, and meets at an angle alpha with the advance direction, a focusing lens 23 whose length is integer times of 1/2 pitch, and optical fibers 14, 15 are formed in one body so as to be rotatable centering around the center axis of the focusing lenses 19, 23. According to such a constitution, a light beam from the optical fiber 16 is made to branch to a normal light beam and an abnormal light beam by the prism 7, and these light beams are made incident to the fibers 14, 15. In this regard, the branch ratio is changed by said rotation.
JP13186480A 1980-09-22 1980-09-22 Vaiable optical branching circuit for single mode fiber Granted JPS5756813A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13186480A JPS5756813A (en) 1980-09-22 1980-09-22 Vaiable optical branching circuit for single mode fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13186480A JPS5756813A (en) 1980-09-22 1980-09-22 Vaiable optical branching circuit for single mode fiber

Publications (2)

Publication Number Publication Date
JPS5756813A true JPS5756813A (en) 1982-04-05
JPS6130247B2 JPS6130247B2 (en) 1986-07-12

Family

ID=15067904

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13186480A Granted JPS5756813A (en) 1980-09-22 1980-09-22 Vaiable optical branching circuit for single mode fiber

Country Status (1)

Country Link
JP (1) JPS5756813A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59153518U (en) * 1983-03-31 1984-10-15 日本電気株式会社 optical coupler
JP2002540408A (en) * 1999-03-23 2002-11-26 レニショウ パブリック リミテッド カンパニー Light beam generation guide device
US6493140B1 (en) * 1999-10-14 2002-12-10 Oplink Communications, Inc. Polarization splitter and combiner and optical devices using the same
CN102162931A (en) * 2010-02-21 2011-08-24 西安邮电学院 Phase-type polarization controller

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59153518U (en) * 1983-03-31 1984-10-15 日本電気株式会社 optical coupler
JP2002540408A (en) * 1999-03-23 2002-11-26 レニショウ パブリック リミテッド カンパニー Light beam generation guide device
US6493140B1 (en) * 1999-10-14 2002-12-10 Oplink Communications, Inc. Polarization splitter and combiner and optical devices using the same
CN102162931A (en) * 2010-02-21 2011-08-24 西安邮电学院 Phase-type polarization controller

Also Published As

Publication number Publication date
JPS6130247B2 (en) 1986-07-12

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