JPS5660401A - Optical branching filter - Google Patents

Optical branching filter

Info

Publication number
JPS5660401A
JPS5660401A JP13522279A JP13522279A JPS5660401A JP S5660401 A JPS5660401 A JP S5660401A JP 13522279 A JP13522279 A JP 13522279A JP 13522279 A JP13522279 A JP 13522279A JP S5660401 A JPS5660401 A JP S5660401A
Authority
JP
Japan
Prior art keywords
fibers
grating
light
fiber
horizontally arranged
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.)
Granted
Application number
JP13522279A
Other languages
Japanese (ja)
Other versions
JPS5822725B2 (en
Inventor
Takaichi Watanabe
Kiyoshi Nosu
Tetsuya Miki
Tatsuo Harada
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
Nippon Telegraph and Telephone Corp
Original Assignee
Hitachi Ltd
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 Hitachi Ltd, Nippon Telegraph and Telephone Corp filed Critical Hitachi Ltd
Priority to JP54135222A priority Critical patent/JPS5822725B2/en
Publication of JPS5660401A publication Critical patent/JPS5660401A/en
Publication of JPS5822725B2 publication Critical patent/JPS5822725B2/en
Expired 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
    • G02B6/29307—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 components assembled in or forming a solid transparent unitary block, e.g. for facilitating component alignment
    • 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

Abstract

PURPOSE:To reduce a concave diffraction grating in size by filling the space between the grating and a plurality of horizontally arranged optical fibers with a transparent dielectric, introducing light through one of the fibers, and allowing the other fibers to receive monochromatic lights different from each other in wavelength. CONSTITUTION:Transparent dielectric 6 such as glass is put into the space between concave diffraction grating 5 and optical fibers 3, 4, 4',... and fixed with an adhesive or the like. Fibers 3, 4, 4',... are horizontally arranged at suitable angle alpha between fiber 3 for incident light and the normal line of grating 5. Considering the refractive index of dielectric 6 to be (n), the spread angle of light emerging from fiber 3 is made smaller as the index (n) is increased. The light is branched with grating 5 and enters fibers 4, 4',..., and lights lambda1, lambda2,... different from each other in wavelength emerge from fibers 4, 4',..., respectively. Thus, grating 5 can be reduced in size.
JP54135222A 1979-10-22 1979-10-22 optical demultiplexer Expired JPS5822725B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54135222A JPS5822725B2 (en) 1979-10-22 1979-10-22 optical demultiplexer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54135222A JPS5822725B2 (en) 1979-10-22 1979-10-22 optical demultiplexer

Publications (2)

Publication Number Publication Date
JPS5660401A true JPS5660401A (en) 1981-05-25
JPS5822725B2 JPS5822725B2 (en) 1983-05-11

Family

ID=15146667

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54135222A Expired JPS5822725B2 (en) 1979-10-22 1979-10-22 optical demultiplexer

Country Status (1)

Country Link
JP (1) JPS5822725B2 (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57198423A (en) * 1981-06-01 1982-12-06 Nippon Sheet Glass Co Ltd Planar type optical demultiplexer and multiplexer
JPS5863914A (en) * 1981-09-28 1983-04-16 カプトロン・インコ−ポレ−テツド Optical fiber communication equipment
JPS59140416A (en) * 1982-12-08 1984-08-11 アンストルマン・ソシエテ・アノニム Optical element having dividing function for remote transmission of light signal
JPS59182413A (en) * 1983-03-28 1984-10-17 ポラロイド・コ−ポレ−シヨン Optical fiber coupler
US4571024A (en) * 1983-10-25 1986-02-18 The United States Of America As Represented By The Secretary Of The Air Force Wavelength selective demultiplexer tuner
FR2569506A1 (en) * 1984-08-27 1986-02-28 Krone Gmbh MULTIPLEX OPTICAL TRANSMISSION DEVICE
JPS61156004A (en) * 1984-12-21 1986-07-15 カール・ツアイスースチフツング Optical apparatus having concave mirror or concave grating
JPS61180209A (en) * 1985-02-06 1986-08-12 Matsushita Electric Ind Co Ltd Optical demultiplexer
JPS61182003A (en) * 1985-02-07 1986-08-14 Matsushita Electric Ind Co Ltd Optical demultiplexer
JPS61203414A (en) * 1985-03-05 1986-09-09 Matsushita Electric Ind Co Ltd Optical demultiplexer
US4715027A (en) * 1986-05-29 1987-12-22 Polaroid Corporation Integrated optic multi/demultiplexer
JPH02180508A (en) * 1988-09-26 1990-07-13 Sandvik Ab Double-side usable cut insert
US4993796A (en) * 1979-08-14 1991-02-19 Kaptron, Inc. Fiber optics communication modules
JP2006106406A (en) * 2004-10-06 2006-04-20 Hitachi Cable Ltd Demultiplexer, optical waveguide and multi-wavelength optical transmission module

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50137554A (en) * 1974-04-08 1975-10-31

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50137554A (en) * 1974-04-08 1975-10-31

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4993796A (en) * 1979-08-14 1991-02-19 Kaptron, Inc. Fiber optics communication modules
JPS57198423A (en) * 1981-06-01 1982-12-06 Nippon Sheet Glass Co Ltd Planar type optical demultiplexer and multiplexer
JPS5863914A (en) * 1981-09-28 1983-04-16 カプトロン・インコ−ポレ−テツド Optical fiber communication equipment
JPH0478973B2 (en) * 1981-09-28 1992-12-14 Kaputoron Inc
JPS59140416A (en) * 1982-12-08 1984-08-11 アンストルマン・ソシエテ・アノニム Optical element having dividing function for remote transmission of light signal
JPS59182413A (en) * 1983-03-28 1984-10-17 ポラロイド・コ−ポレ−シヨン Optical fiber coupler
US4571024A (en) * 1983-10-25 1986-02-18 The United States Of America As Represented By The Secretary Of The Air Force Wavelength selective demultiplexer tuner
FR2569506A1 (en) * 1984-08-27 1986-02-28 Krone Gmbh MULTIPLEX OPTICAL TRANSMISSION DEVICE
JPS6161107A (en) * 1984-08-27 1986-03-28 クロ−ネ・アクチエンゲゼルシャフト Optical multiplex separation transmitter
JPS61156004A (en) * 1984-12-21 1986-07-15 カール・ツアイスースチフツング Optical apparatus having concave mirror or concave grating
JPS61180209A (en) * 1985-02-06 1986-08-12 Matsushita Electric Ind Co Ltd Optical demultiplexer
JPS61182003A (en) * 1985-02-07 1986-08-14 Matsushita Electric Ind Co Ltd Optical demultiplexer
JPS61203414A (en) * 1985-03-05 1986-09-09 Matsushita Electric Ind Co Ltd Optical demultiplexer
US4715027A (en) * 1986-05-29 1987-12-22 Polaroid Corporation Integrated optic multi/demultiplexer
JPH02180508A (en) * 1988-09-26 1990-07-13 Sandvik Ab Double-side usable cut insert
JP2006106406A (en) * 2004-10-06 2006-04-20 Hitachi Cable Ltd Demultiplexer, optical waveguide and multi-wavelength optical transmission module
JP4696521B2 (en) * 2004-10-06 2011-06-08 日立電線株式会社 Demultiplexer, optical waveguide, and wavelength division multiplexing optical transmission module

Also Published As

Publication number Publication date
JPS5822725B2 (en) 1983-05-11

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