JPS5647002A - Photodirectional coupler - Google Patents

Photodirectional coupler

Info

Publication number
JPS5647002A
JPS5647002A JP12282579A JP12282579A JPS5647002A JP S5647002 A JPS5647002 A JP S5647002A JP 12282579 A JP12282579 A JP 12282579A JP 12282579 A JP12282579 A JP 12282579A JP S5647002 A JPS5647002 A JP S5647002A
Authority
JP
Japan
Prior art keywords
polarization
optical fibers
coupler
optical fiber
stably
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
JP12282579A
Other languages
Japanese (ja)
Inventor
Koichi Aoyama
Takeshi Ito
Seiji Nakagawa
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.)
NTT Inc
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 JP12282579A priority Critical patent/JPS5647002A/en
Publication of JPS5647002A publication Critical patent/JPS5647002A/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
    • G02B6/27—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)
  • Optical Couplings Of Light Guides (AREA)

Abstract

PURPOSE:To operate a photodirectional coupler using a double refractive medium stably and highly efficiently by using optical fibers having the polarization retentivity of a light source for at least one optical fiber. CONSTITUTION:An optical fiber having polarization retentivity, for example, the one which is circular in both jacket layer 5 and clad 6 but is elliptical in core 7 or the one which is circular in both jacket layer 5 and core 7 but elliptical in clad is used for an input optical fiber 1. The linearly polarized light is then put in from the direction of an arrow 11 and if the direction of the plane of this polarization and the direction of the crystal axis of a double refractive medium 4 are suitably selected, it becomes possible to couple the same to the optical fibers 1 2' only but not to the optical fibers 1 2. In addition, the exit plane of polarization from the optical fibers is constant; therefore, the coupling characteristics thereof are maintained stably. In this way, the coupler can be operated stably and highly efficiently.
JP12282579A 1979-09-25 1979-09-25 Photodirectional coupler Pending JPS5647002A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12282579A JPS5647002A (en) 1979-09-25 1979-09-25 Photodirectional coupler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12282579A JPS5647002A (en) 1979-09-25 1979-09-25 Photodirectional coupler

Publications (1)

Publication Number Publication Date
JPS5647002A true JPS5647002A (en) 1981-04-28

Family

ID=14845559

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12282579A Pending JPS5647002A (en) 1979-09-25 1979-09-25 Photodirectional coupler

Country Status (1)

Country Link
JP (1) JPS5647002A (en)

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