JPS56102807A - Light wave coupling equipment - Google Patents

Light wave coupling equipment

Info

Publication number
JPS56102807A
JPS56102807A JP455480A JP455480A JPS56102807A JP S56102807 A JPS56102807 A JP S56102807A JP 455480 A JP455480 A JP 455480A JP 455480 A JP455480 A JP 455480A JP S56102807 A JPS56102807 A JP S56102807A
Authority
JP
Japan
Prior art keywords
light
led
path
anisotropic crystal
film filter
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
JP455480A
Other languages
Japanese (ja)
Inventor
Takaichi Watanabe
Kiyoshi Nosu
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 JP455480A priority Critical patent/JPS56102807A/en
Publication of JPS56102807A publication Critical patent/JPS56102807A/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
    • G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29346—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by wave or beam interference
    • G02B6/29361—Interference filters, e.g. multilayer coatings, thin film filters, dichroic splitters or mirrors based on multilayers, WDM filters
    • 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
    • G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29346—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by wave or beam interference
    • G02B6/29361—Interference filters, e.g. multilayer coatings, thin film filters, dichroic splitters or mirrors based on multilayers, WDM filters
    • G02B6/29362—Serial cascade of filters or filtering operations, e.g. for a large number of channels
    • G02B6/29365—Serial cascade of filters or filtering operations, e.g. for a large number of channels in a multireflection configuration, i.e. beam following a zigzag path between filters or filtering operations

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Integrated Circuits (AREA)

Abstract

PURPOSE:To prevent the influence of the light going backward, by giving the constitution where respective lights emitted from plural pairs of light sources pass the interference film filter and the anisotropic crystal once through the optical system and are coupled to one light waveguide path. CONSTITUTION:The horizontal polarized light emitted from light source 11 is connected to subordinate light waveguide path 2 directly or through the optical system such as a lens and is led to collimator lens 41. The light converted to a parallel light by collimator lens 41 passes through interference film filter 6 and is condensed by focusing lens 5 and is led to anisotropic crystal 7, and this horizontal polarized light is led to light waveguide path 3. Meanwhile, though the vertical polarized light of the different wavelength from light source 12 is incident to anisotropic crystal 7 through the same light path as the light from light source 11, the light path is bent, and this light coincides with the light from light source 11 at the emission end of anisotropic crystal 7 and is led to light waveguide equipment 3. Similarly, light emitted from light sources 13 and 14 are reflected by interference film filter 6 and pass through the same light path as lights from light sources 11 and 12 and are led to light waveguide path 3.
JP455480A 1980-01-21 1980-01-21 Light wave coupling equipment Pending JPS56102807A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP455480A JPS56102807A (en) 1980-01-21 1980-01-21 Light wave coupling equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP455480A JPS56102807A (en) 1980-01-21 1980-01-21 Light wave coupling equipment

Publications (1)

Publication Number Publication Date
JPS56102807A true JPS56102807A (en) 1981-08-17

Family

ID=11587256

Family Applications (1)

Application Number Title Priority Date Filing Date
JP455480A Pending JPS56102807A (en) 1980-01-21 1980-01-21 Light wave coupling equipment

Country Status (1)

Country Link
JP (1) JPS56102807A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4770485A (en) * 1987-05-05 1988-09-13 Hughes Aircraft Company Apparatus to launch separated mode groups into optical fibers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4770485A (en) * 1987-05-05 1988-09-13 Hughes Aircraft Company Apparatus to launch separated mode groups into optical fibers

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