JPS6423221A - Multiplexing/demultiplexing unit and multiplexer/ demultiplexer for coherent light communication - Google Patents

Multiplexing/demultiplexing unit and multiplexer/ demultiplexer for coherent light communication

Info

Publication number
JPS6423221A
JPS6423221A JP18053987A JP18053987A JPS6423221A JP S6423221 A JPS6423221 A JP S6423221A JP 18053987 A JP18053987 A JP 18053987A JP 18053987 A JP18053987 A JP 18053987A JP S6423221 A JPS6423221 A JP S6423221A
Authority
JP
Japan
Prior art keywords
light
wave
splitter
reflected
lambda1
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
JP18053987A
Other languages
Japanese (ja)
Inventor
Terumi Chikama
Tetsuya Kiyonaga
Yoshito Onoda
Hideo Kuwabara
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP18053987A priority Critical patent/JPS6423221A/en
Publication of JPS6423221A publication Critical patent/JPS6423221A/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
    • G02B6/29358—Multiple beam interferometer external to a light guide, e.g. Fabry-Pérot, etalon, VIPA plate, OTDL plate, continuous interferometer, parallel plate resonator
    • 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
    • G02B6/2713—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 cascade of polarisation selective or adjusting operations

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)

Abstract

PURPOSE:To synthesize or separate signal light rays multiplexed at narrow inter-wavelength intervals at a low loss by using a Fabry-Perot interferometer. CONSTITUTION:The wavelength multiplexed light of wavelengths lambda1-lambdan passes a splitter 11 and is polarized to circularly polarized light by a quarter wave plate 12 when this light is entered as a P wave to a polarized beam splitter 11. Of these wavelengths lambda1-lambdan, the light of, for example, the wavelength lambda1, passes the Fabry-Perot interferometer 13. The light of the other wavelengths is reflected by the interferometer 13. The light except the wavelength lambda1 is reflected by the interferometer 13 and is made by the wave plate 12 into an S wave which is reflected by the splitter 11, is separated from the incident direction and is emitted as the S wave. The light of lambda2-lambdan incident in the reflection optical axis direction of the splitter 11 as the S wave is reflected by the splitter 11 and is polarized by the wave plate 12 to the circularly polarized light. This light is reflected by the interferometer 13, is converted to the P wave by the wave plate 12 and is emitted through the splitter 11. The light of the wavelength lambda1 is synthesized with the light of lambda2-lambdan and is emitted.
JP18053987A 1987-07-20 1987-07-20 Multiplexing/demultiplexing unit and multiplexer/ demultiplexer for coherent light communication Pending JPS6423221A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18053987A JPS6423221A (en) 1987-07-20 1987-07-20 Multiplexing/demultiplexing unit and multiplexer/ demultiplexer for coherent light communication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18053987A JPS6423221A (en) 1987-07-20 1987-07-20 Multiplexing/demultiplexing unit and multiplexer/ demultiplexer for coherent light communication

Publications (1)

Publication Number Publication Date
JPS6423221A true JPS6423221A (en) 1989-01-25

Family

ID=16085036

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18053987A Pending JPS6423221A (en) 1987-07-20 1987-07-20 Multiplexing/demultiplexing unit and multiplexer/ demultiplexer for coherent light communication

Country Status (1)

Country Link
JP (1) JPS6423221A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4973124A (en) * 1988-12-22 1990-11-27 Nec Corporation Wavelength drop-and-insert device
US5036512A (en) * 1989-05-08 1991-07-30 At&T Bell Laboratories Optical apparatus for combining light beam arrays having different wavelengths
US6671430B2 (en) 1999-05-14 2003-12-30 Fujitsu Limited Optical device, terminal apparatus, and system for wavelength division multiplexing
US7033262B2 (en) 2002-10-11 2006-04-25 Ykk Corporation Abrasive substrate for carry type abrasive machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4973124A (en) * 1988-12-22 1990-11-27 Nec Corporation Wavelength drop-and-insert device
US5036512A (en) * 1989-05-08 1991-07-30 At&T Bell Laboratories Optical apparatus for combining light beam arrays having different wavelengths
US6671430B2 (en) 1999-05-14 2003-12-30 Fujitsu Limited Optical device, terminal apparatus, and system for wavelength division multiplexing
US7033262B2 (en) 2002-10-11 2006-04-25 Ykk Corporation Abrasive substrate for carry type abrasive machine

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