JPS5696543A - Optical multiplex transmitter - Google Patents

Optical multiplex transmitter

Info

Publication number
JPS5696543A
JPS5696543A JP18392380A JP18392380A JPS5696543A JP S5696543 A JPS5696543 A JP S5696543A JP 18392380 A JP18392380 A JP 18392380A JP 18392380 A JP18392380 A JP 18392380A JP S5696543 A JPS5696543 A JP S5696543A
Authority
JP
Japan
Prior art keywords
light
converged
focus
grating
recess
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
JP18392380A
Other languages
Japanese (ja)
Inventor
Tatsuo Harada
Toshiaki Kita
Yasuo Minae
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP18392380A priority Critical patent/JPS5696543A/en
Publication of JPS5696543A publication Critical patent/JPS5696543A/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
    • G02B6/29308—Diffractive element having focusing properties, e.g. curved gratings
    • 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
    • G02B6/29379—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 characterised by the function or use of the complete device
    • G02B6/2938—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 characterised by the function or use of the complete device for multiplexing or demultiplexing, i.e. combining or separating wavelengths, e.g. 1xN, NxM

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Communication System (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)

Abstract

PURPOSE:To enable multiplex photo transmission by means of multiwave length light, through coupling and separation of multiwave length light efficiently with a simple constitution, by using a recess diffraction grating having the function decreasing the aberration of spectral image at a specific wave length region especially. CONSTITUTION:Electric signals different from wave length each other are converted into mono-chrome photosignals with photoelectric converters 11-13, and are transmitted to the focus 4 of a photosignal coupling recess diffraction grating 1 with optical fibers 21-23. The output terminal of the fibers 21-23 is located to the position of incident angle where the diffraction angles are equal, and the light diffracted and reflected at the grating 1 is converged to the input terminal of transmission optical fiber 2. The photosignal output from the fiber 2 is converged on the focus 5 of the optical signal separation recess diffracting grating 3, and the light of each wave length reflected and diffracted at the diffraction grating 3 is converged to the focus 5 to give the optical fibers 31-33 located at the position and to be transmitted to photoelectric converters 41-42, allowing to make multiplex photo transmission by multiwave length light.
JP18392380A 1980-12-26 1980-12-26 Optical multiplex transmitter Pending JPS5696543A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18392380A JPS5696543A (en) 1980-12-26 1980-12-26 Optical multiplex transmitter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18392380A JPS5696543A (en) 1980-12-26 1980-12-26 Optical multiplex transmitter

Publications (1)

Publication Number Publication Date
JPS5696543A true JPS5696543A (en) 1981-08-04

Family

ID=16144171

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18392380A Pending JPS5696543A (en) 1980-12-26 1980-12-26 Optical multiplex transmitter

Country Status (1)

Country Link
JP (1) JPS5696543A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6114608A (en) * 1984-06-29 1986-01-22 Shimadzu Corp Optical multiplexer and demultiplexer
JPH07212346A (en) * 1993-11-12 1995-08-11 At & T Corp Light-wavelength-division multiplexing having high density

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6114608A (en) * 1984-06-29 1986-01-22 Shimadzu Corp Optical multiplexer and demultiplexer
JPH0574047B2 (en) * 1984-06-29 1993-10-15 Shimadzu Corp
JPH07212346A (en) * 1993-11-12 1995-08-11 At & T Corp Light-wavelength-division multiplexing having high density

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