JPS5611412A - Optical branching circuit - Google Patents

Optical branching circuit

Info

Publication number
JPS5611412A
JPS5611412A JP8768179A JP8768179A JPS5611412A JP S5611412 A JPS5611412 A JP S5611412A JP 8768179 A JP8768179 A JP 8768179A JP 8768179 A JP8768179 A JP 8768179A JP S5611412 A JPS5611412 A JP S5611412A
Authority
JP
Japan
Prior art keywords
light wave
optical
lambda2
lambda1
face
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
JP8768179A
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 JP8768179A priority Critical patent/JPS5611412A/en
Publication of JPS5611412A publication Critical patent/JPS5611412A/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 Couplings Of Light Guides (AREA)

Abstract

PURPOSE:To obtain characteristics of good wavelength separability with simple constitution by additionally providing the optical films having the characteristics allowing the transmission of only the specified light waves at the respective incident end faces of the other fibers which branch and propagate the light waves divided by the optical film face of the end face of an incident side optical fiber. CONSTITUTION:When the light waves of wavelengths lambda1, lambda2 are propagated in an optical fiber OF1 on incident side, the light wave of lambda1 is reflected and separated by an optical film 4 and goes toward an optical film 12 provided to the end face of an OF2. This film 12 lets the other wavelength components reflected by leaking together with the lambda1 light wave reflect and attenuate and allows only the lambda1 light wave to transmit, thus propagating the same to the OF2. On the other hand, the light wave of lambda2 transmits through the optical film, 4 then goes toward the optical film 11 provided to the end face of an OF3. This film 11 lets the other wavelength components transmitted by leaking together with the lambda2 light wave reflect and attenuate and allows only the lambda2 light wave to transmit, thus propagating the same to the OF3. In this way, the light waves may be branched with good separability by the double optical films provided with the specified optical characteristics.
JP8768179A 1979-07-11 1979-07-11 Optical branching circuit Pending JPS5611412A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8768179A JPS5611412A (en) 1979-07-11 1979-07-11 Optical branching circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8768179A JPS5611412A (en) 1979-07-11 1979-07-11 Optical branching circuit

Publications (1)

Publication Number Publication Date
JPS5611412A true JPS5611412A (en) 1981-02-04

Family

ID=13921669

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8768179A Pending JPS5611412A (en) 1979-07-11 1979-07-11 Optical branching circuit

Country Status (1)

Country Link
JP (1) JPS5611412A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5290957A (en) * 1976-01-26 1977-07-30 Nippon Telegr & Teleph Corp <Ntt> Branching filter for optical fibers
JPS542144A (en) * 1977-06-07 1979-01-09 Matsushita Electric Ind Co Ltd Branching filter for optical transmission

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5290957A (en) * 1976-01-26 1977-07-30 Nippon Telegr & Teleph Corp <Ntt> Branching filter for optical fibers
JPS542144A (en) * 1977-06-07 1979-01-09 Matsushita Electric Ind Co Ltd Branching filter for optical transmission

Similar Documents

Publication Publication Date Title
US4076375A (en) Directional optical waveguide coupler and power tap arrangement
DE3776157D1 (en) OPTICAL MODULATION AND MEASURING PROCESS.
ES2090053T3 (en) OPTICAL COMMUNICATION TRANSMISSION SYSTEM FOR DIPLEX OR DUPLEX TRANSMISSION.
KR950703748A (en) ENHANCING THE NONLINEARITY OF AN OPTICAL WAVEGUIDE
JPS55163505A (en) Light wavelength selective coupling device
NO811999L (en) OPTICAL CONNECTORS FOR TRANSMISSION AND RECEIPT OF OPTICAL FIBERS
JPS5611412A (en) Optical branching circuit
JPS5611409A (en) Optical branching circuit
JPS536059A (en) Measuring method and apparatus for optical fiber transmission characteristics
JPS5529841A (en) Light propagation device using optical fiber
JPS568103A (en) Photoswitch
JPS5789703A (en) Equalization system for optical-fiber delay dispersion
JPS5512905A (en) Multichannel low-loss light-wave divider
JPS5488136A (en) Optical branching filter for optical fibers
JPS55155324A (en) Optical fiber device
JPS55105206A (en) Optical branching and coupling circuit
JPS5541468A (en) Light branching filter device
JPS5635104A (en) Optical fiber branching filter
JPS57190919A (en) Optical multiplexer and demultiplexer
JPS56169948A (en) Optical multiplex transmission system
RU2051472C1 (en) Light-emitting transmitter and communication system
JPS5752004A (en) Optical mixing and branching circuit
JPS5535346A (en) Optical transmission device
JPS5720704A (en) Apparatus for light branching circuit
JPS55111920A (en) Light control device