JPS5611409A - Optical branching circuit - Google Patents

Optical branching circuit

Info

Publication number
JPS5611409A
JPS5611409A JP8767779A JP8767779A JPS5611409A JP S5611409 A JPS5611409 A JP S5611409A JP 8767779 A JP8767779 A JP 8767779A JP 8767779 A JP8767779 A JP 8767779A JP S5611409 A JPS5611409 A JP S5611409A
Authority
JP
Japan
Prior art keywords
wavelength
optical
transmission
optical film
film
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
JP8767779A
Other languages
Japanese (ja)
Inventor
Takeo Iwama
Eizo Miyauchi
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 JP8767779A priority Critical patent/JPS5611409A/en
Publication of JPS5611409A publication Critical patent/JPS5611409A/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
    • G02B6/29368—Light guide comprising the filter, e.g. filter deposited on a fibre end

Landscapes

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

Abstract

PURPOSE:To improve the precision of signal transmission and obtain the characteristics of good wavelength separability by providing the optical film faces of the wavelength characteristics respectively allowing the transmission of only the required light waves in the respective optical paths of the waveguide on the light insident side branched by the optical film faces. CONSTITUTION:At the branching point 5 of optical guides 1-3, an optical film 4 having the wavelength characteristic allowing the transmission of only the light wave of the central wavelength of e.g. lambda2 is provided to the slant end face of 45 deg. of the waveguide 1, and an optical film 11 of the wavelength characteristic allowing the transmission of only the light wave of the central wavelength of lambda1 reflected by the film 4 is interposingly disposed in the exit side optical guide 2, and further an optical film 12 of the wavelength characteristic allowing the transmission of only the light wave of lambda2 transmitted by the film 4 is interposingly installed in the exit side optical guide 3. The branching parts 5 of these waveguides 1-3 are stuck compactly by an adhesive agent to become an optical matching agent, whereby they are formed in one body. These enable the characteristics of good wavelength separability to be obtained and make it possible to improve the precesion of signal transmission.
JP8767779A 1979-07-11 1979-07-11 Optical branching circuit Pending JPS5611409A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8767779A JPS5611409A (en) 1979-07-11 1979-07-11 Optical branching circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8767779A JPS5611409A (en) 1979-07-11 1979-07-11 Optical branching circuit

Publications (1)

Publication Number Publication Date
JPS5611409A true JPS5611409A (en) 1981-02-04

Family

ID=13921560

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8767779A Pending JPS5611409A (en) 1979-07-11 1979-07-11 Optical branching circuit

Country Status (1)

Country Link
JP (1) JPS5611409A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59210412A (en) * 1983-05-13 1984-11-29 Hitachi Ltd Optical circuit
US4630255A (en) * 1984-01-03 1986-12-16 Lignes Telegraphiques Et Telephoniques L.T.T. Optical multiplexer-demultiplexer for use with optical fiber wavelengths
JPS6275606A (en) * 1985-09-30 1987-04-07 Shimadzu Corp Optical multiplexer/demultiplexer
JPS62237408A (en) * 1986-03-27 1987-10-17 シ−メンス、アクチエンゲゼルシヤフト Transmitting receiving module for bidirectional communication network and manufacture thereof
JPS638710A (en) * 1986-06-30 1988-01-14 Furukawa Electric Co Ltd:The Optical multiplexer/demultiplexer for distribution coupled single mode and its production
JPS6333713A (en) * 1986-07-28 1988-02-13 Nippon Telegr & Teleph Corp <Ntt> Optical multiplexer/demultiplexer
JPH02304404A (en) * 1989-05-19 1990-12-18 Nec Corp Optical multiplexer/demultiplexer

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5387243A (en) * 1977-01-10 1978-08-01 Matsushita Electric Ind Co Ltd Light signal propagator
JPS542144A (en) * 1977-06-07 1979-01-09 Matsushita Electric Ind Co Ltd Branching filter for optical transmission
JPS5477145A (en) * 1977-12-02 1979-06-20 Fujitsu Ltd High speed optical branching circuit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5387243A (en) * 1977-01-10 1978-08-01 Matsushita Electric Ind Co Ltd Light signal propagator
JPS542144A (en) * 1977-06-07 1979-01-09 Matsushita Electric Ind Co Ltd Branching filter for optical transmission
JPS5477145A (en) * 1977-12-02 1979-06-20 Fujitsu Ltd High speed optical branching circuit

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59210412A (en) * 1983-05-13 1984-11-29 Hitachi Ltd Optical circuit
JPH0557563B2 (en) * 1983-05-13 1993-08-24 Hitachi Ltd
US4630255A (en) * 1984-01-03 1986-12-16 Lignes Telegraphiques Et Telephoniques L.T.T. Optical multiplexer-demultiplexer for use with optical fiber wavelengths
JPS6275606A (en) * 1985-09-30 1987-04-07 Shimadzu Corp Optical multiplexer/demultiplexer
JPS62237408A (en) * 1986-03-27 1987-10-17 シ−メンス、アクチエンゲゼルシヤフト Transmitting receiving module for bidirectional communication network and manufacture thereof
JPS638710A (en) * 1986-06-30 1988-01-14 Furukawa Electric Co Ltd:The Optical multiplexer/demultiplexer for distribution coupled single mode and its production
JPS6333713A (en) * 1986-07-28 1988-02-13 Nippon Telegr & Teleph Corp <Ntt> Optical multiplexer/demultiplexer
JPH02304404A (en) * 1989-05-19 1990-12-18 Nec Corp Optical multiplexer/demultiplexer

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