CA2207715A1 - Optical modulator with optical waveguide and traveling-wave type electrodes - Google Patents

Optical modulator with optical waveguide and traveling-wave type electrodes

Info

Publication number
CA2207715A1
CA2207715A1 CA002207715A CA2207715A CA2207715A1 CA 2207715 A1 CA2207715 A1 CA 2207715A1 CA 002207715 A CA002207715 A CA 002207715A CA 2207715 A CA2207715 A CA 2207715A CA 2207715 A1 CA2207715 A1 CA 2207715A1
Authority
CA
Canada
Prior art keywords
buffer layer
substrate
hot electrode
optical
electric field
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
CA002207715A
Other languages
French (fr)
Other versions
CA2207715C (en
Inventor
Tohru Sugamata
Yasuyuki Miyama
Takashi Shinriki
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.)
Sumitomo Osaka Cement Co Ltd
Original Assignee
Sumitomo Osaka Cement 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
Priority claimed from JP15403096A external-priority patent/JP2793562B2/en
Priority claimed from JP20813096A external-priority patent/JP2801894B2/en
Priority claimed from JP29010196A external-priority patent/JP2801900B2/en
Application filed by Sumitomo Osaka Cement Co Ltd filed Critical Sumitomo Osaka Cement Co Ltd
Publication of CA2207715A1 publication Critical patent/CA2207715A1/en
Application granted granted Critical
Publication of CA2207715C publication Critical patent/CA2207715C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/12—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode
    • G02F2201/127—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode travelling wave

Abstract

An optical modulator including a substrate made of lithium niobate having an electrooptical effect, first and second optical waveguides formed in the substrate by effecting a thermal diffusion of titanium into a surface of the substrate, a buffer layer formed on the surface of the substrate, a hot electrode provided on the buffer layer and having a width W e not larger than a width W f of the optical waveguide, first and second ground electrodes provided on the buffer layer such that these ground electrodes are symmetrical with respect to the hot electrode, and an electric field adjusting region having a width not smaller than that of the hot electrode is provided between the buffer layer and the hot electrode. First and second ground side electric field adjusting main- and sub-regions may be provided between the buffer layer and the first and second ground electrodes, respectively.
An interaction between an electric field generated by applied microwave and lightwave propagating along the optical waveguides can be enhanced, and thus a driving voltage can be decreased.
CA002207715A 1996-06-14 1997-06-13 Optical modulator with optical waveguide and traveling-wave type electrodes Expired - Fee Related CA2207715C (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP15403096A JP2793562B2 (en) 1996-06-14 1996-06-14 Waveguide type optical modulator
JP8-154,030 1996-06-14
JP20813096A JP2801894B2 (en) 1996-08-07 1996-08-07 Waveguide type optical modulator
JP8-208,130 1996-08-07
JP29010196A JP2801900B2 (en) 1996-10-31 1996-10-31 Waveguide type optical modulator
JP8-290,101 1996-10-31

Publications (2)

Publication Number Publication Date
CA2207715A1 true CA2207715A1 (en) 1997-12-14
CA2207715C CA2207715C (en) 2005-08-02

Family

ID=27320581

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002207715A Expired - Fee Related CA2207715C (en) 1996-06-14 1997-06-13 Optical modulator with optical waveguide and traveling-wave type electrodes

Country Status (4)

Country Link
US (1) US5748358A (en)
EP (1) EP0813092B1 (en)
CA (1) CA2207715C (en)
DE (1) DE69737430T2 (en)

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Publication number Priority date Publication date Assignee Title
US6956980B2 (en) 2000-09-18 2005-10-18 Sumitomo Osaka Cement Co., Ltd. Optical waveguide type optical modulator and production method therefor

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JPH10206661A (en) * 1997-01-28 1998-08-07 Fujitsu Ltd Polarization scrambler, and optical integrated circuit using it
US6372284B1 (en) 1998-06-11 2002-04-16 Optelecom, Inc. Fluoropolymer coating of lithium niobate integrated optical devices
CA2305279C (en) * 1998-08-10 2003-02-11 Sumitomo Osaka Cement Co., Ltd. An optical waveguide modulator
US6226423B1 (en) * 1998-09-11 2001-05-01 Ngk Insulators, Ltd. Optical waveguide element
US6069729A (en) * 1999-01-20 2000-05-30 Northwestern University High speed electro-optic modulator
US6211997B1 (en) * 1999-03-31 2001-04-03 Eastman Kodak Company Modulator for optical printing
WO2001001190A1 (en) * 1999-06-28 2001-01-04 Sumitomo Osaka Cement Co., Ltd. Electrooptical device and method of manufacturing the same
AU2002342855A1 (en) * 2001-05-14 2002-11-25 Corning O.T.I. Spa Electro-optic modulator
EP1258772A1 (en) 2001-05-14 2002-11-20 Corning O.T.I. S.p.A. Electro-optic modulator having high bandwith and low drive voltage
WO2004025362A1 (en) * 2002-09-13 2004-03-25 Avanex Corporation Lithium niobate optical modulator
US6954558B2 (en) * 2003-06-24 2005-10-11 Intel Corporation Method and apparatus for phase shifting an optical beam in an optical device
US7653281B2 (en) * 2004-09-02 2010-01-26 Ramot At Tel-Aviv University Ltd. Embedded channels, embedded waveguides and methods of manufacturing and using the same
JP2006348371A (en) * 2005-06-20 2006-12-28 Fujitsu Ltd Electroplating method
US7280712B2 (en) 2005-08-04 2007-10-09 Intel Corporation Method and apparatus for phase shifiting an optical beam in an optical device
JP4649511B2 (en) * 2006-02-15 2011-03-09 富士通株式会社 Optical waveguide device
JP4682081B2 (en) * 2006-04-27 2011-05-11 富士通株式会社 Optical device
US20070280309A1 (en) * 2006-05-23 2007-12-06 Ansheng Liu Optical waveguide with single sided coplanar contact optical phase modulator
JP5056040B2 (en) * 2007-02-08 2012-10-24 富士通株式会社 Light modulator
JP2009145816A (en) * 2007-12-18 2009-07-02 Ngk Insulators Ltd Optical modulator
US10080684B2 (en) 2008-03-13 2018-09-25 Optimedica Corporation System and method for laser corneal incisions for keratoplasty procedures
AU2015214447B2 (en) 2014-02-04 2020-03-05 Amo Development, Llc System and method for laser corneal incisions for keratoplasty procedures
JP6551449B2 (en) * 2017-03-31 2019-07-31 住友大阪セメント株式会社 Light modulation element
JP7087555B2 (en) * 2018-03-29 2022-06-21 住友大阪セメント株式会社 Optical modulator

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NL8600782A (en) * 1986-03-26 1987-10-16 Nederlanden Staat ELECTRO-OPTICALLY INDICATED OPTICAL WAVE GUIDE, AND ACTIVE DEVICES INCLUDING SUCH A WAVE GUIDE.
SE457253B (en) * 1987-04-14 1988-12-12 Ericsson Telefon Ab L M ELECTRICAL DEVICE FOR OPEL ELECTRONIC BODIES
JPS6457207A (en) * 1987-08-28 1989-03-03 Hitachi Ltd Waveguide type optical device
GB8812180D0 (en) * 1988-05-23 1988-06-29 Bt & D Technologies Ltd Electro-optic device
JPH0251123A (en) * 1988-08-12 1990-02-21 Nippon Telegr & Teleph Corp <Ntt> Optical modulator
JPH0293423A (en) * 1988-09-29 1990-04-04 Fujitsu Ltd Optical waveguide device
JPH02289821A (en) * 1989-02-17 1990-11-29 Nippon Telegr & Teleph Corp <Ntt> Optical control element
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US5050948A (en) * 1990-08-23 1991-09-24 Tektronix, Inc. Traveling wave electro-optic modulator
US5185823A (en) * 1990-12-13 1993-02-09 Japan Aviation Electronics Industry Limited Waveguide type optical device
JP2565002B2 (en) * 1991-02-25 1996-12-18 富士通株式会社 Signal electrode for optical waveguide device and method of forming the same
US5138480A (en) * 1991-08-14 1992-08-11 Hewlett-Packard Company Traveling wave optical modulator
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US5528707A (en) * 1994-09-30 1996-06-18 Honeywell Inc. Bidirectional optical modulator having lightwave signal conservation
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6956980B2 (en) 2000-09-18 2005-10-18 Sumitomo Osaka Cement Co., Ltd. Optical waveguide type optical modulator and production method therefor

Also Published As

Publication number Publication date
DE69737430T2 (en) 2007-11-29
US5748358A (en) 1998-05-05
EP0813092B1 (en) 2007-03-07
DE69737430D1 (en) 2007-04-19
EP0813092A1 (en) 1997-12-17
CA2207715C (en) 2005-08-02

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Effective date: 20160613