CA2082939A1 - Fabry-perot modulator - Google Patents

Fabry-perot modulator

Info

Publication number
CA2082939A1
CA2082939A1 CA2082939A CA2082939A CA2082939A1 CA 2082939 A1 CA2082939 A1 CA 2082939A1 CA 2082939 A CA2082939 A CA 2082939A CA 2082939 A CA2082939 A CA 2082939A CA 2082939 A1 CA2082939 A1 CA 2082939A1
Authority
CA
Canada
Prior art keywords
wells
fabry
ang
modulator
absorption
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
CA2082939A
Other languages
French (fr)
Other versions
CA2082939C (en
Inventor
Mark Whitehead
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.)
IPG Photonics Corp
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2082939A1 publication Critical patent/CA2082939A1/en
Application granted granted Critical
Publication of CA2082939C publication Critical patent/CA2082939C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G02F3/00—Optical logic elements; Optical bistable devices
    • G02F3/02—Optical bistable devices
    • G02F3/028—Optical bistable devices based on self electro-optic effect devices [SEED]
    • 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 
    • G02F1/21—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  by interference
    • G02F1/218—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  by interference using semi-conducting materials
    • 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 
    • G02F1/015—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 semiconductor elements with at least one potential jump barrier, e.g. PN, PIN junction
    • G02F1/0155—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 semiconductor elements with at least one potential jump barrier, e.g. PN, PIN junction modulating the optical absorption
    • G02F1/0157—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 semiconductor elements with at least one potential jump barrier, e.g. PN, PIN junction modulating the optical absorption using electro-absorption effects, e.g. Franz-Keldysh [FK] effect or quantum confined stark effect [QCSE]
    • 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
    • G02F2203/00—Function characteristic
    • G02F2203/02—Function characteristic reflective

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
  • Lasers (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Photo Coupler, Interrupter, Optical-To-Optical Conversion Devices (AREA)

Abstract

An asymetric Fabry-Perot (FP) modulator includes a quan-tum well structure having wider (approximately 150.ANG.) than usual (about 100.ANG.) wells. The FP cavity has a resonance at a wave-length of an excitonic absorption peak of the QW structure. Al-though the maximum change in absorption under applied bias is less with 150° wells than with 100° wells, the characteristics of the electroabsorption are also altered, with the result that the lar-gest change occurs at the wavelength of the band-edge el-hhl ex-citon at zero bias. Absorption can be reduced by biasing the QW
and hence the AFPM can have a normally-off (zero bias, zero ref-lectivity) characteristic. Such an arrangement makes possible higher contrast modulation and/or lower operating voltages. The FP modulator may be used in SEEDs.
CA002082939A 1990-05-25 1991-05-24 Fabry-perot modulator Expired - Lifetime CA2082939C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB909011813A GB9011813D0 (en) 1990-05-25 1990-05-25 Fabry-perot modulator
GB9011813.4 1990-05-25

Publications (2)

Publication Number Publication Date
CA2082939A1 true CA2082939A1 (en) 1991-11-26
CA2082939C CA2082939C (en) 1996-08-27

Family

ID=10676613

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002082939A Expired - Lifetime CA2082939C (en) 1990-05-25 1991-05-24 Fabry-perot modulator

Country Status (12)

Country Link
US (1) US5202897A (en)
EP (1) EP0531377B1 (en)
JP (1) JP3195342B2 (en)
KR (1) KR100236314B1 (en)
AU (1) AU640015B2 (en)
CA (1) CA2082939C (en)
DE (1) DE69126781T2 (en)
ES (1) ES2104707T3 (en)
GB (1) GB9011813D0 (en)
HK (1) HK1000942A1 (en)
IE (1) IE80447B1 (en)
WO (1) WO1991019219A1 (en)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2690286A1 (en) * 1992-04-17 1993-10-22 Commissariat Energie Atomique Laser cavity with asymmetrical semi-conductor heterostructure and laser equipped with this cavity.
US5291502A (en) * 1992-09-04 1994-03-01 The Board Of Trustees Of The Leland Stanford, Jr. University Electrostatically tunable optical device and optical interconnect for processors
FR2696874B1 (en) * 1992-10-13 1994-12-09 Thomson Csf Electromagnetic wave modulator with quantum wells.
CA2121405C (en) * 1993-04-30 1999-03-16 David Andrew Barclay Miller Tunable lasers based on absorbers in standing waves
US5408110A (en) * 1993-06-28 1995-04-18 National Research Council Of Canada Second-harmonic generation in semiconductor heterostructures
DE60108106T2 (en) 2001-07-30 2005-12-08 Agilent Technologies, Inc. (n.d.Ges.d.Staates Delaware), Palo Alto Temperature-controlled light modulator arrangement
US7064740B2 (en) * 2001-11-09 2006-06-20 Sharp Laboratories Of America, Inc. Backlit display with improved dynamic range
US6819466B2 (en) * 2001-12-26 2004-11-16 Coretek Inc. Asymmetric fabry-perot modulator with a micromechanical phase compensating cavity
US7623105B2 (en) 2003-11-21 2009-11-24 Sharp Laboratories Of America, Inc. Liquid crystal display with adaptive color
WO2005067453A2 (en) * 2003-12-18 2005-07-28 Sharp Laboratories Of America, Inc. Dynamic gamma for a liquid crystal display
US7777714B2 (en) * 2004-05-04 2010-08-17 Sharp Laboratories Of America, Inc. Liquid crystal display with adaptive width
US7872631B2 (en) * 2004-05-04 2011-01-18 Sharp Laboratories Of America, Inc. Liquid crystal display with temporal black point
US7505018B2 (en) * 2004-05-04 2009-03-17 Sharp Laboratories Of America, Inc. Liquid crystal display with reduced black level insertion
US7612757B2 (en) * 2004-05-04 2009-11-03 Sharp Laboratories Of America, Inc. Liquid crystal display with modulated black point
US7532192B2 (en) * 2004-05-04 2009-05-12 Sharp Laboratories Of America, Inc. Liquid crystal display with filtered black point
US7602369B2 (en) * 2004-05-04 2009-10-13 Sharp Laboratories Of America, Inc. Liquid crystal display with colored backlight
US8395577B2 (en) * 2004-05-04 2013-03-12 Sharp Laboratories Of America, Inc. Liquid crystal display with illumination control
US7023451B2 (en) * 2004-06-14 2006-04-04 Sharp Laboratories Of America, Inc. System for reducing crosstalk
US7556836B2 (en) * 2004-09-03 2009-07-07 Solae, Llc High protein snack product
US7898519B2 (en) * 2005-02-17 2011-03-01 Sharp Laboratories Of America, Inc. Method for overdriving a backlit display
US8050512B2 (en) 2004-11-16 2011-11-01 Sharp Laboratories Of America, Inc. High dynamic range images from low dynamic range images
US8050511B2 (en) * 2004-11-16 2011-11-01 Sharp Laboratories Of America, Inc. High dynamic range images from low dynamic range images
US7525528B2 (en) * 2004-11-16 2009-04-28 Sharp Laboratories Of America, Inc. Technique that preserves specular highlights
US9143657B2 (en) * 2006-01-24 2015-09-22 Sharp Laboratories Of America, Inc. Color enhancement technique using skin color detection
US8121401B2 (en) * 2006-01-24 2012-02-21 Sharp Labortories of America, Inc. Method for reducing enhancement of artifacts and noise in image color enhancement
JP4872450B2 (en) * 2006-05-12 2012-02-08 日立電線株式会社 Nitride semiconductor light emitting device
US8941580B2 (en) * 2006-11-30 2015-01-27 Sharp Laboratories Of America, Inc. Liquid crystal display with area adaptive backlight
KR101706354B1 (en) * 2009-06-24 2017-02-13 삼성전자주식회사 High speed optical modulator and method of modulating light using the same

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4546244A (en) * 1984-03-14 1985-10-08 At&T Bell Laboratories Nonlinear and bistable optical device
DE3681164D1 (en) * 1986-06-18 1991-10-02 Ibm OPTOELECTRONIC VOLTAGE CONTROLLED MODULATOR.
GB8904185D0 (en) * 1989-02-23 1989-04-05 British Telecomm Fabry-perot modulator

Also Published As

Publication number Publication date
JPH05506518A (en) 1993-09-22
EP0531377A1 (en) 1993-03-17
AU7894791A (en) 1991-12-31
WO1991019219A1 (en) 1991-12-12
KR100236314B1 (en) 1999-12-15
HK1000942A1 (en) 1998-05-08
CA2082939C (en) 1996-08-27
US5202897A (en) 1993-04-13
AU640015B2 (en) 1993-08-12
EP0531377B1 (en) 1997-07-09
JP3195342B2 (en) 2001-08-06
DE69126781D1 (en) 1997-08-14
IE80447B1 (en) 1998-07-29
GB9011813D0 (en) 1990-07-18
IE911796A1 (en) 1991-12-04
ES2104707T3 (en) 1997-10-16
DE69126781T2 (en) 1998-01-08

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKEC Expiry (correction)

Effective date: 20121202