JPS6444426A - Optical patch switching device - Google Patents

Optical patch switching device

Info

Publication number
JPS6444426A
JPS6444426A JP20113487A JP20113487A JPS6444426A JP S6444426 A JPS6444426 A JP S6444426A JP 20113487 A JP20113487 A JP 20113487A JP 20113487 A JP20113487 A JP 20113487A JP S6444426 A JPS6444426 A JP S6444426A
Authority
JP
Japan
Prior art keywords
guides
optical path
light
path lengths
changed
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
JP20113487A
Other languages
Japanese (ja)
Inventor
Takashi Yokokura
Nobuo Hori
Hiroaki Shimozono
Satoru Niimura
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.)
Topcon Corp
Original Assignee
Topcon 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 Topcon Corp filed Critical Topcon Corp
Priority to JP20113487A priority Critical patent/JPS6444426A/en
Priority to US07/215,856 priority patent/US4909629A/en
Priority to US07/228,649 priority patent/US4986653A/en
Publication of JPS6444426A publication Critical patent/JPS6444426A/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
    • G02B6/2935—Mach-Zehnder configuration, i.e. comprising separate splitting and combining means
    • G02B6/29352—Mach-Zehnder configuration, i.e. comprising separate splitting and combining means in a light guide

Landscapes

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

Abstract

PURPOSE:To switch optical paths by utilization of the interference of light by providing means for coupling incident light guides and exit light guides by two parallel light guides and providing means for changing optical path lengths to one thereof. CONSTITUTION:Ti is selectively thermally diffused in a lithium niobate substrate 1 to form the branch guides 5a-5d, the parallel guides 6-9 and the coupling guides 10a, 10b, 11a, 11b. Electrodes 12a-13b are provided on both sides of the guides 7, 8. The refractive indices of the guides 7, 8 are changed and the optical path lengths are changed by an electro-optic effect when the voltages are impressed to the electrode pairs 12, 13 respectively. For example if the optical path lengths of the guides 8, 9 are changed by impressing the voltage to the electrodes 7, 8 and the optical path difference between the guides 5a-6-10a and 5b-7-10b is increased to odd times the half wavelength of light, there is no output in the guide 3. There is the output if said difference is increased to even times said wavelength. The incident luminous flux is guided to the desired exit light guide by selectively using the means for changing the optical path lengths.
JP20113487A 1987-07-07 1987-08-12 Optical patch switching device Pending JPS6444426A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP20113487A JPS6444426A (en) 1987-08-12 1987-08-12 Optical patch switching device
US07/215,856 US4909629A (en) 1987-07-07 1988-07-06 Light interferometer
US07/228,649 US4986653A (en) 1987-08-11 1988-08-05 Light wave range finder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20113487A JPS6444426A (en) 1987-08-12 1987-08-12 Optical patch switching device

Publications (1)

Publication Number Publication Date
JPS6444426A true JPS6444426A (en) 1989-02-16

Family

ID=16435968

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20113487A Pending JPS6444426A (en) 1987-07-07 1987-08-12 Optical patch switching device

Country Status (1)

Country Link
JP (1) JPS6444426A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS585718A (en) * 1981-07-02 1983-01-13 Leo Giken:Kk Information recorder by integrated optical waveguides

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS585718A (en) * 1981-07-02 1983-01-13 Leo Giken:Kk Information recorder by integrated optical waveguides

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