JPS6448021A - Optical device - Google Patents

Optical device

Info

Publication number
JPS6448021A
JPS6448021A JP20425687A JP20425687A JPS6448021A JP S6448021 A JPS6448021 A JP S6448021A JP 20425687 A JP20425687 A JP 20425687A JP 20425687 A JP20425687 A JP 20425687A JP S6448021 A JPS6448021 A JP S6448021A
Authority
JP
Japan
Prior art keywords
conductor
light beam
optical waveguide
effective refractive
propagating
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
JP20425687A
Other languages
Japanese (ja)
Inventor
Kenji Kono
Tsutomu Kito
Osamu Mitomi
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 JP20425687A priority Critical patent/JPS6448021A/en
Publication of JPS6448021A publication Critical patent/JPS6448021A/en
Pending 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
    • G02F1/01—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 intensity, phase, polarisation or colour 
    • G02F1/03—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 intensity, phase, polarisation or colour  based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
    • G02F1/035—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 intensity, phase, polarisation or colour  based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect in an optical waveguide structure
    • G02F1/0356—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 intensity, phase, polarisation or colour  based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect in an optical waveguide structure controlled by a high-frequency electromagnetic wave component in an electric waveguide structure

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)

Abstract

PURPOSE:To execute a high speed operation within deteriorating the efficiency, by constituting the titled device so that a progressive wave electrode is formed in the vicinity of an optical waveguide which has been formed on a principal plane of a substrate, and a signal propagating through it and a light beam propagating through the optical waveguide are brought to an interaction. CONSTITUTION:A center conductor 11 and a ground conductor 12 of an asymmetrical coplanar strip, whose line widths are 2W1 and 2W2, and whose gap is 2G are formed on optical waveguides 4, 5 through a buffer layer 6 whose thickness is (d), and an overlay 14 and a conductor 13 are placed thereon. When height H of the conductor 13 is lowered, an effective refractive index (nm) of a modulated signal wave becomes small, and also, coincides entirely with an effective refractive index (no) of light. In such a way, by bringing the conductor close to the vicinity of an area where a signal propagating through a progressive wave electrode and a light beam propagating through an optical waveguide are brought to an intersection, and by bringing the respective effective refractive indexes of the signal wave and the light beam close to each other, an extremely width modulation band is realized, and a high speed operation can be executed.
JP20425687A 1987-08-19 1987-08-19 Optical device Pending JPS6448021A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20425687A JPS6448021A (en) 1987-08-19 1987-08-19 Optical device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20425687A JPS6448021A (en) 1987-08-19 1987-08-19 Optical device

Publications (1)

Publication Number Publication Date
JPS6448021A true JPS6448021A (en) 1989-02-22

Family

ID=16487449

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20425687A Pending JPS6448021A (en) 1987-08-19 1987-08-19 Optical device

Country Status (1)

Country Link
JP (1) JPS6448021A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01204020A (en) * 1988-02-09 1989-08-16 Fujitsu Ltd Formation of optical waveguide traveling wave electrode
JPH02289821A (en) * 1989-02-17 1990-11-29 Nippon Telegr & Teleph Corp <Ntt> Optical control element
JPH0593892A (en) * 1991-10-01 1993-04-16 Nec Corp Two-layered type optical modulator
JPH05119287A (en) * 1991-10-29 1993-05-18 Nec Corp Waveguige type optical device
EP0709711A1 (en) * 1994-10-25 1996-05-01 Hughes Aircraft Company Velocity-matched electrodes for electro-optic travelling-wave modulators and method for forming the same
WO2021201132A1 (en) * 2020-03-31 2021-10-07 Tdk Corporation Electro-optical device
US11947147B2 (en) 2021-03-30 2024-04-02 Tdk Corporation Optical device with microcrack resistance from surface roughness thereby reducing loss of light
US12124150B2 (en) 2022-03-07 2024-10-22 Keysight Technologies, Inc. Radio frequency (RF) phase velocity tuner for setting an electrooptic (EO) modulator bandwidth at different optical wavelengths

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63141021A (en) * 1986-12-03 1988-06-13 Fujitsu Ltd Mach-zehnder type optical waveguide modulator

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63141021A (en) * 1986-12-03 1988-06-13 Fujitsu Ltd Mach-zehnder type optical waveguide modulator

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01204020A (en) * 1988-02-09 1989-08-16 Fujitsu Ltd Formation of optical waveguide traveling wave electrode
JPH02289821A (en) * 1989-02-17 1990-11-29 Nippon Telegr & Teleph Corp <Ntt> Optical control element
US5129017A (en) * 1989-02-17 1992-07-07 Nippon Telegraph And Telephone Company Electrically controlled optical device
JPH0593892A (en) * 1991-10-01 1993-04-16 Nec Corp Two-layered type optical modulator
JPH05119287A (en) * 1991-10-29 1993-05-18 Nec Corp Waveguige type optical device
EP0709711A1 (en) * 1994-10-25 1996-05-01 Hughes Aircraft Company Velocity-matched electrodes for electro-optic travelling-wave modulators and method for forming the same
JPH08227083A (en) * 1994-10-25 1996-09-03 Hughes Aircraft Co Speed-matched electrode for electro-optical traveling wave modulator and its manufacture
WO2021201132A1 (en) * 2020-03-31 2021-10-07 Tdk Corporation Electro-optical device
JP2023522151A (en) * 2020-03-31 2023-05-29 Tdk株式会社 electro-optical device
US11947147B2 (en) 2021-03-30 2024-04-02 Tdk Corporation Optical device with microcrack resistance from surface roughness thereby reducing loss of light
US12124150B2 (en) 2022-03-07 2024-10-22 Keysight Technologies, Inc. Radio frequency (RF) phase velocity tuner for setting an electrooptic (EO) modulator bandwidth at different optical wavelengths

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