JPS56150724A - Optical frequency modulator - Google Patents

Optical frequency modulator

Info

Publication number
JPS56150724A
JPS56150724A JP5281580A JP5281580A JPS56150724A JP S56150724 A JPS56150724 A JP S56150724A JP 5281580 A JP5281580 A JP 5281580A JP 5281580 A JP5281580 A JP 5281580A JP S56150724 A JPS56150724 A JP S56150724A
Authority
JP
Japan
Prior art keywords
region
optical frequency
frequency modulator
modulator
triad
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
JP5281580A
Other languages
Japanese (ja)
Inventor
Yoshihisa Yamamoto
Nobuyuki Imoto
Shigeru Saito
Hiroaki Ando
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 JP5281580A priority Critical patent/JPS56150724A/en
Publication of JPS56150724A publication Critical patent/JPS56150724A/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

Abstract

PURPOSE:To operate an optical frequency modulator on low voltage and obtain realize said modulator of high speeds and wide bands by making use of the wave guiding and electrooptic effect of the device. CONSTITUTION:To operate the optical frequency modulator having the optical waveguide region constituted of the semiconductor having the triad symmetrical axis constituting of a substrate 1, nondoped layers 2, 3, clad layers 4, 5, 6, etc., the guiding direction of light is selected in the x-axis direction of the triad symmetrical axes of the crystal, electrodes 7 and 9 are grounded, and reverse bias voltage is applied to electrodes 8 and 10 in such a manner that the applied electric fields in both (x)-, (y)-directions punch through the region 3 and that the electric field intensity in the region 3 is made roughly constant. Thus, the main axis of the index ellipsoid of the region 3 rotates, whereby the light frequency is modulated.
JP5281580A 1980-04-23 1980-04-23 Optical frequency modulator Pending JPS56150724A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5281580A JPS56150724A (en) 1980-04-23 1980-04-23 Optical frequency modulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5281580A JPS56150724A (en) 1980-04-23 1980-04-23 Optical frequency modulator

Publications (1)

Publication Number Publication Date
JPS56150724A true JPS56150724A (en) 1981-11-21

Family

ID=12925336

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5281580A Pending JPS56150724A (en) 1980-04-23 1980-04-23 Optical frequency modulator

Country Status (1)

Country Link
JP (1) JPS56150724A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61212823A (en) * 1985-03-18 1986-09-20 Nec Corp Optical modulator
JPS61212824A (en) * 1985-03-18 1986-09-20 Nec Corp Optical modulator
JPS61221726A (en) * 1985-03-27 1986-10-02 Nec Corp Optical controlling element
JPS61270726A (en) * 1985-05-27 1986-12-01 Nec Corp Waveguide type optical gate switch
JPS6236630A (en) * 1985-08-12 1987-02-17 Hitachi Ltd Optical frequency modulator
JPS63313120A (en) * 1987-06-16 1988-12-21 Fujitsu Ltd Optical polarization control element
US4904038A (en) * 1984-05-30 1990-02-27 Litton Systems, Inc. Guided wave optical frequency shifter
WO1991007666A1 (en) * 1989-11-13 1991-05-30 Dai Nippon Printing Co., Ltd. Potential sensor using electro-optical crystal and method of measuring potential
US5434698A (en) * 1989-11-13 1995-07-18 Dai Nippon Printing Co., Ltd. Potential sensor employing electrooptic crystal and potential measuring method
JP2010503047A (en) * 2006-09-12 2010-01-28 キネティック リミテッド Electro-optic waveguide polarization modulator.
JP2014215316A (en) * 2013-04-22 2014-11-17 日本電信電話株式会社 Semiconductor polarization control element

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4904038A (en) * 1984-05-30 1990-02-27 Litton Systems, Inc. Guided wave optical frequency shifter
JPS61212823A (en) * 1985-03-18 1986-09-20 Nec Corp Optical modulator
JPS61212824A (en) * 1985-03-18 1986-09-20 Nec Corp Optical modulator
JPS61221726A (en) * 1985-03-27 1986-10-02 Nec Corp Optical controlling element
JPS61270726A (en) * 1985-05-27 1986-12-01 Nec Corp Waveguide type optical gate switch
JPS6236630A (en) * 1985-08-12 1987-02-17 Hitachi Ltd Optical frequency modulator
JPS63313120A (en) * 1987-06-16 1988-12-21 Fujitsu Ltd Optical polarization control element
WO1991007666A1 (en) * 1989-11-13 1991-05-30 Dai Nippon Printing Co., Ltd. Potential sensor using electro-optical crystal and method of measuring potential
US5434698A (en) * 1989-11-13 1995-07-18 Dai Nippon Printing Co., Ltd. Potential sensor employing electrooptic crystal and potential measuring method
US5550370A (en) * 1989-11-13 1996-08-27 Dai Nippon Printing Co., Ltd. Potential sensor employing electrooptic crystal and potential measuring method
JP2010503047A (en) * 2006-09-12 2010-01-28 キネティック リミテッド Electro-optic waveguide polarization modulator.
JP2014215316A (en) * 2013-04-22 2014-11-17 日本電信電話株式会社 Semiconductor polarization control element

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