JPS54123049A - Optical switch - Google Patents

Optical switch

Info

Publication number
JPS54123049A
JPS54123049A JP2978078A JP2978078A JPS54123049A JP S54123049 A JPS54123049 A JP S54123049A JP 2978078 A JP2978078 A JP 2978078A JP 2978078 A JP2978078 A JP 2978078A JP S54123049 A JPS54123049 A JP S54123049A
Authority
JP
Japan
Prior art keywords
waveguides
waveguide
optical
deltabetae
result
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
JP2978078A
Other languages
Japanese (ja)
Other versions
JPS5936249B2 (en
Inventor
Osamu Mikami
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP2978078A priority Critical patent/JPS5936249B2/en
Publication of JPS54123049A publication Critical patent/JPS54123049A/en
Publication of JPS5936249B2 publication Critical patent/JPS5936249B2/en
Expired 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 reduce the total length and the loss in optical transmission by making integral two 3 dB couplers and an optical modulator in one optical waveguide composed of a linear portion. CONSTITUTION:If a voltage is impressed upon electrodes 7 and 8, the depthwise electric field is established in a concentrated manner below the electrodes. Since waveguides 2 and 3 are preset in the region having the electric field concentrated, there is established a phase difference DELTAbetaE between the waveguides. At an optical modulator 6, on the other hand, a thin film 14 for phase misalignment is mounted only on one waveguide 3. As a result, the coefficient of transmission of the waveguide 3 has been varied more than that of the waveguide 2 to that the phase difference DELTAbetaL inbetween can be made sufficiently larger than the coupling coefficient K of the intrinsic type between the two waveguides. As a result, no shift of optical waves takes place upon the phase misalignment. As a result, after the DELTAbetaL takes a preset value by the charge of the thin film 14, the intensity of the waveguides 2 and 3 at their emanating ends can be varied from 0 to 1 by varying the value DELTAbetaE within a range of ¦DELTAbetaE¦<pi.
JP2978078A 1978-03-17 1978-03-17 light switch Expired JPS5936249B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2978078A JPS5936249B2 (en) 1978-03-17 1978-03-17 light switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2978078A JPS5936249B2 (en) 1978-03-17 1978-03-17 light switch

Publications (2)

Publication Number Publication Date
JPS54123049A true JPS54123049A (en) 1979-09-25
JPS5936249B2 JPS5936249B2 (en) 1984-09-03

Family

ID=12285522

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2978078A Expired JPS5936249B2 (en) 1978-03-17 1978-03-17 light switch

Country Status (1)

Country Link
JP (1) JPS5936249B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5735826A (en) * 1980-08-13 1982-02-26 Nippon Telegr & Teleph Corp <Ntt> Optical switching device
JPS57173814A (en) * 1981-04-20 1982-10-26 Matsushita Electric Ind Co Ltd Optical waveguide branching device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6124255A (en) * 1984-07-13 1986-02-01 Hitachi Ltd Structure for semiconductor package

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5735826A (en) * 1980-08-13 1982-02-26 Nippon Telegr & Teleph Corp <Ntt> Optical switching device
JPS57173814A (en) * 1981-04-20 1982-10-26 Matsushita Electric Ind Co Ltd Optical waveguide branching device

Also Published As

Publication number Publication date
JPS5936249B2 (en) 1984-09-03

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