CA2096229A1 - Optical mixing device - Google Patents

Optical mixing device

Info

Publication number
CA2096229A1
CA2096229A1 CA002096229A CA2096229A CA2096229A1 CA 2096229 A1 CA2096229 A1 CA 2096229A1 CA 002096229 A CA002096229 A CA 002096229A CA 2096229 A CA2096229 A CA 2096229A CA 2096229 A1 CA2096229 A1 CA 2096229A1
Authority
CA
Canada
Prior art keywords
input
detector
beams
frequency
output
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
CA002096229A
Other languages
French (fr)
Other versions
CA2096229C (en
Inventor
Richard Michael Jenkins
John Michael Heaton
Robert William John Devereux
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.)
Qinetiq Ltd
Original Assignee
Richard Michael Jenkins
John Michael Heaton
Robert William John Devereux
The Secretary Of State For Defence Of The United Kingdom Of Great Britain And Northern Ireland
The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland
Qinetiq Limited
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 Richard Michael Jenkins, John Michael Heaton, Robert William John Devereux, The Secretary Of State For Defence Of The United Kingdom Of Great Britain And Northern Ireland, The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland, Qinetiq Limited filed Critical Richard Michael Jenkins
Publication of CA2096229A1 publication Critical patent/CA2096229A1/en
Application granted granted Critical
Publication of CA2096229C publication Critical patent/CA2096229C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
    • G02B6/2808—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using a mixing element which evenly distributes an input signal over a number of outputs
    • G02B6/2813—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using a mixing element which evenly distributes an input signal over a number of outputs based on multimode interference effect, i.e. self-imaging
    • 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
    • G02F2/00—Demodulating light; Transferring the modulation of modulated light; Frequency-changing of light
    • G02F2/002—Demodulating light; Transferring the modulation of modulated light; Frequency-changing of light using optical mixing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/16—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion

Abstract

An optical mixing device (10) incorporates a rectangular multimode waveguide (14), with an input region (22) and an ou-put region (24), two square section input waveguides (26, 28), and a detector (34). The input waveguides (26, 28) are arranged to provide first and second input radiation beams respectively to the input region (22), each beam being in the form of a square waveguide fundamental mode beam. Modal dispersion along the multimode waveguide (14) produces a single maximum incident on the detector (34) when the input beams are in phase with one another, and two maxima of like magnitude located on opposite sides of the detector (34) when the input beams are in antiphase. Intermediate these two situations three maxima are produced, the amplitudes depending on phase difference. The first and second input beams may be of like frequency producing a time-inde-pendent device output. The input beams may alternatively have different frequencies. For instance the first input beam may be a local oscillator signal produced by a coherent source of stable frequency, and the second input beam may be a Doppler shifted version of an output signal from that source. The device output then provides an intermediate frequency signal. The intensity inci-dent on the detector (34) thus varies at the difference frequency of the two inputs. Similar devices may be constructed with addi-tional inputs and with different forms of output.
CA002096229A 1990-12-20 1991-12-02 Optical mixing device Expired - Lifetime CA2096229C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB909027659A GB9027659D0 (en) 1990-12-20 1990-12-20 Optical device
GB9027659.3 1990-12-20
PCT/GB1991/002133 WO1992011562A1 (en) 1990-12-20 1991-12-02 Optical mixing device

Publications (2)

Publication Number Publication Date
CA2096229A1 true CA2096229A1 (en) 1992-06-21
CA2096229C CA2096229C (en) 2002-02-12

Family

ID=10687343

Family Applications (2)

Application Number Title Priority Date Filing Date
CA002096423A Expired - Lifetime CA2096423C (en) 1990-12-20 1991-12-02 Optical device
CA002096229A Expired - Lifetime CA2096229C (en) 1990-12-20 1991-12-02 Optical mixing device

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA002096423A Expired - Lifetime CA2096423C (en) 1990-12-20 1991-12-02 Optical device

Country Status (7)

Country Link
US (2) US5475776A (en)
EP (2) EP0563067B1 (en)
JP (2) JP3188697B2 (en)
CA (2) CA2096423C (en)
DE (2) DE69126793T2 (en)
GB (1) GB9027659D0 (en)
WO (2) WO1992011562A1 (en)

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GB0801408D0 (en) 2008-01-25 2008-03-05 Qinetiq Ltd Multi-community network with quantum key distribution
WO2009093036A2 (en) 2008-01-25 2009-07-30 Qinetiq Limited Quantum cryptography apparatus
GB0801395D0 (en) 2008-01-25 2008-03-05 Qinetiq Ltd Network having quantum key distribution
GB0801492D0 (en) 2008-01-28 2008-03-05 Qinetiq Ltd Optical transmitters and receivers for quantum key distribution
CN102089688A (en) * 2008-05-09 2011-06-08 惠普开发有限公司 Methods for fabrication of large core hollow waveguides
JP5309212B2 (en) * 2008-05-09 2013-10-09 ヒューレット−パッカード デベロップメント カンパニー エル．ピー． Optical splitter device
GB0809045D0 (en) 2008-05-19 2008-06-25 Qinetiq Ltd Quantum key distribution involving moveable key device
GB0809044D0 (en) 2008-05-19 2008-06-25 Qinetiq Ltd Multiplexed QKD
GB0809038D0 (en) 2008-05-19 2008-06-25 Qinetiq Ltd Quantum key device
JP2012503784A (en) * 2008-09-24 2012-02-09 ヒューレット−パッカード デベロップメント カンパニー エル．ピー． Polarization-maintaining large core hollow waveguide
GB0819665D0 (en) 2008-10-27 2008-12-03 Qinetiq Ltd Quantum key dsitribution
GB0822254D0 (en) 2008-12-05 2009-01-14 Qinetiq Ltd Method of performing authentication between network nodes
GB0822253D0 (en) 2008-12-05 2009-01-14 Qinetiq Ltd Method of establishing a quantum key for use between network nodes
GB0822356D0 (en) 2008-12-08 2009-01-14 Qinetiq Ltd Non-linear optical device
EP2374035A4 (en) 2009-01-07 2015-08-19 Hewlett Packard Development Co Photonic waveguide
WO2010080159A1 (en) 2009-01-09 2010-07-15 Hewlett-Packard Development Company, L.P. System and methods for routing optical signals
US8606058B2 (en) * 2009-04-30 2013-12-10 Hewlett-Packard Development Company, L.P. Multi-channel optical coupler
GB0917060D0 (en) 2009-09-29 2009-11-11 Qinetiq Ltd Methods and apparatus for use in quantum key distribution
JP5631176B2 (en) 2010-11-29 2014-11-26 キヤノン株式会社 Solid-state image sensor and camera
GB201020424D0 (en) 2010-12-02 2011-01-19 Qinetiq Ltd Quantum key distribution
JP5812610B2 (en) * 2011-01-18 2015-11-17 キヤノン株式会社 Solid-state imaging device and imaging system having solid-state imaging device
JP2014219509A (en) * 2013-05-07 2014-11-20 住友電気工業株式会社 Coherent mixer, 2×2 multimode interferometer
GB2522252B (en) 2014-01-20 2016-04-20 Rockley Photonics Ltd Tunable SOI laser
GB2522410A (en) 2014-01-20 2015-07-29 Rockley Photonics Ltd Tunable SOI laser
JP2015191132A (en) * 2014-03-28 2015-11-02 株式会社Ｓｃｒｅｅｎホールディングス Luminance distribution measurement device, drawing device, and luminance distribution measurement method
WO2015193421A2 (en) * 2014-06-20 2015-12-23 Technische Universiteit Eindhoven Phase dependent multimode interference device for coupled cavity lasers
CA2957719A1 (en) * 2014-08-13 2016-02-18 Ipg Photonics Corporation Multibeam fiber laser system
CN106292151B (en) * 2015-06-10 2017-12-26 钱鸿斌 Using the micro projector of organic reflection telescope
GB2547467A (en) 2016-02-19 2017-08-23 Rockley Photonics Ltd Tunable laser
US11699892B2 (en) 2016-02-19 2023-07-11 Rockley Photonics Limited Discrete wavelength tunable laser
US10811848B2 (en) 2017-06-14 2020-10-20 Rockley Photonics Limited Broadband arbitrary wavelength multichannel laser source

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Also Published As

Publication number Publication date
CA2096423A1 (en) 1992-06-21
US5396570A (en) 1995-03-07
DE69128942D1 (en) 1998-03-26
WO1992011555A1 (en) 1992-07-09
US5475776A (en) 1995-12-12
WO1992011562A1 (en) 1992-07-09
DE69128942T2 (en) 1998-06-04
JPH06503900A (en) 1994-04-28
EP0563073A1 (en) 1993-10-06
JP3188696B2 (en) 2001-07-16
EP0563067B1 (en) 1997-07-09
CA2096423C (en) 2003-04-22
DE69126793D1 (en) 1997-08-14
DE69126793T2 (en) 1997-12-18
GB9027659D0 (en) 1991-02-13
JP3188697B2 (en) 2001-07-16
EP0563067A1 (en) 1993-10-06
JPH06503901A (en) 1994-04-28
EP0563073B1 (en) 1998-02-18
CA2096229C (en) 2002-02-12

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