JPS57161837A - Optical switching method - Google Patents

Optical switching method

Info

Publication number
JPS57161837A
JPS57161837A JP4738681A JP4738681A JPS57161837A JP S57161837 A JPS57161837 A JP S57161837A JP 4738681 A JP4738681 A JP 4738681A JP 4738681 A JP4738681 A JP 4738681A JP S57161837 A JPS57161837 A JP S57161837A
Authority
JP
Japan
Prior art keywords
optical waveguides
light
electrode
electrodes
constant
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
JP4738681A
Other languages
Japanese (ja)
Other versions
JPH0375847B2 (en
Inventor
Mitsukazu Kondo
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP4738681A priority Critical patent/JPS57161837A/en
Publication of JPS57161837A publication Critical patent/JPS57161837A/en
Publication of JPH0375847B2 publication Critical patent/JPH0375847B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
    • G02F1/31—Digital deflection, i.e. optical switching
    • G02F1/313—Digital deflection, i.e. optical switching in an optical waveguide structure
    • G02F1/3132—Digital deflection, i.e. optical switching in an optical waveguide structure of directional coupler type

Landscapes

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

Abstract

PURPOSE:To obtain a stationary switching state free of variation in the quantity of light by preventing a drift phenomenon by applying three electrodes, provided on a substrate having optical waveguides, with out-of-phase AC or rectangular voltages. CONSTITUTION:On LiNbO3, Ti is dispersed to form optical waveguides 1 and 2 which adjoin to each other at an about 3-7mum interval; and electrode 3 is provided between the optical waveguides 1 and 2, and electrode 4 and 5 are provided outside of them. The optical waveguides 1 and 2, while no voltage is applied, have the same propagation constant and are constituted to complete coupling length, so light 8 incident to the optical waveguide 1 is coupled with the optical waveguide 2 to be emitted as light 9. When the electrode 3 is grounded and the electrodes 4 and 5 are applied with 180 deg. out-of-phase rectangular voltages, no DC electric-field drift phenomenon is caused and a difference in refractive index (i.e. propagation constant difference) between the optical waveguides 1 and 2 becomes constant, so that the quantity of emitted light 10 is nearly constant.
JP4738681A 1981-03-31 1981-03-31 Optical switching method Granted JPS57161837A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4738681A JPS57161837A (en) 1981-03-31 1981-03-31 Optical switching method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4738681A JPS57161837A (en) 1981-03-31 1981-03-31 Optical switching method

Publications (2)

Publication Number Publication Date
JPS57161837A true JPS57161837A (en) 1982-10-05
JPH0375847B2 JPH0375847B2 (en) 1991-12-03

Family

ID=12773659

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4738681A Granted JPS57161837A (en) 1981-03-31 1981-03-31 Optical switching method

Country Status (1)

Country Link
JP (1) JPS57161837A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5993431A (en) * 1982-11-19 1984-05-29 Fujitsu Ltd Optical switch
JPS6136726A (en) * 1984-07-30 1986-02-21 Tech Res & Dev Inst Of Japan Def Agency Optical switch
JPS6239826A (en) * 1985-08-15 1987-02-20 テレフオンアクチ−ボラゲツト　エル　エム　エリツクソン Photoelectron coupler irrelevant to polarization
WO1988004785A1 (en) * 1986-12-19 1988-06-30 Hitachi, Ltd. Optical synthesizing/branching filter and optical module using the same
JPH01134348A (en) * 1987-11-19 1989-05-26 Tdk Corp Driving method for optical waveguide switch
JPH01179918A (en) * 1988-01-11 1989-07-18 Nec Corp Optical waveguide switch
JPH03148607A (en) * 1989-11-06 1991-06-25 Nec Corp Method for driving waveguide type optical device
JPH0432053U (en) * 1990-07-10 1992-03-16
JPH04326332A (en) * 1991-04-26 1992-11-16 Nec Corp Optical waveguide device
JPH07168213A (en) * 1991-01-30 1995-07-04 Nec Corp Light control device

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5993431A (en) * 1982-11-19 1984-05-29 Fujitsu Ltd Optical switch
JPH0361932B2 (en) * 1982-11-19 1991-09-24 Fujitsu Ltd
JPS6136726A (en) * 1984-07-30 1986-02-21 Tech Res & Dev Inst Of Japan Def Agency Optical switch
JPS6239826A (en) * 1985-08-15 1987-02-20 テレフオンアクチ−ボラゲツト　エル　エム　エリツクソン Photoelectron coupler irrelevant to polarization
WO1988004785A1 (en) * 1986-12-19 1988-06-30 Hitachi, Ltd. Optical synthesizing/branching filter and optical module using the same
JPH01134348A (en) * 1987-11-19 1989-05-26 Tdk Corp Driving method for optical waveguide switch
JPH01179918A (en) * 1988-01-11 1989-07-18 Nec Corp Optical waveguide switch
JPH03148607A (en) * 1989-11-06 1991-06-25 Nec Corp Method for driving waveguide type optical device
JPH0432053U (en) * 1990-07-10 1992-03-16
JPH07168213A (en) * 1991-01-30 1995-07-04 Nec Corp Light control device
JPH04326332A (en) * 1991-04-26 1992-11-16 Nec Corp Optical waveguide device

Also Published As

Publication number Publication date
JPH0375847B2 (en) 1991-12-03

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