JPS576806A - Optical branching filter - Google Patents

Optical branching filter

Info

Publication number
JPS576806A
JPS576806A JP8063280A JP8063280A JPS576806A JP S576806 A JPS576806 A JP S576806A JP 8063280 A JP8063280 A JP 8063280A JP 8063280 A JP8063280 A JP 8063280A JP S576806 A JPS576806 A JP S576806A
Authority
JP
Japan
Prior art keywords
rays
wavelengths
lambda11
lambda20
lambda15
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
JP8063280A
Other languages
Japanese (ja)
Inventor
Kenichi Kuroda
Masahiro Nunoshita
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP8063280A priority Critical patent/JPS576806A/en
Publication of JPS576806A publication Critical patent/JPS576806A/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
    • G02B6/29304—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 diffraction, e.g. grating
    • G02B6/29305—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 diffraction, e.g. grating as bulk element, i.e. free space arrangement external to a light guide
    • G02B6/2931—Diffractive element operating in reflection
    • 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
    • G02B6/29304—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 diffraction, e.g. grating
    • G02B6/29305—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 diffraction, e.g. grating as bulk element, i.e. free space arrangement external to a light guide
    • G02B6/29311—Diffractive element operating in transmission
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To efficiently branch the rays of different wavelength bands and to increase the multiplicity by installing a multiplex interference film filter before diffraction with a diffraction grating, and branching waves at every wavelength band. CONSTITUTION:If optical fibers 10-20 arrayed in accordance with the number of wavelengths and a transmission optical fiber 1 are placed on the focal plane of a lens, the rays of different wavelengths lambda11-lambda20 propagating in the fiber 1 are emitted from the fiber 1, after which they are made into parallel rays by a lens 2, and these parallel rays are made incident to a multiplex interference film filter 3. The wavelengths lambda11-lambda15 and lambda16-lambda20 are in different wavelength bands, and if the filter 3 which allows the transmission of the rays of the wavelengths lambda11-lambda15 and reflects the rays of the wavelengths lambda16-lambda20 is selected, the rays of the wavelengths lambda11-lambda15 transmit through the filter 3 and are made incident to a reflection type diffraction grating 4. Thereby, the rays of different wavelength bands are branched efficiently and the multiplicity is increased.
JP8063280A 1980-06-13 1980-06-13 Optical branching filter Pending JPS576806A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8063280A JPS576806A (en) 1980-06-13 1980-06-13 Optical branching filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8063280A JPS576806A (en) 1980-06-13 1980-06-13 Optical branching filter

Publications (1)

Publication Number Publication Date
JPS576806A true JPS576806A (en) 1982-01-13

Family

ID=13723731

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8063280A Pending JPS576806A (en) 1980-06-13 1980-06-13 Optical branching filter

Country Status (1)

Country Link
JP (1) JPS576806A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000028847A (en) * 1998-06-04 2000-01-28 Instruments Sa Multiplexer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000028847A (en) * 1998-06-04 2000-01-28 Instruments Sa Multiplexer

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