EP1546779A4 - Verfahren und vorrichtung zum erkennen mehrerer optischer wellenlängen - Google Patents

Verfahren und vorrichtung zum erkennen mehrerer optischer wellenlängen

Info

Publication number
EP1546779A4
EP1546779A4 EP03762098A EP03762098A EP1546779A4 EP 1546779 A4 EP1546779 A4 EP 1546779A4 EP 03762098 A EP03762098 A EP 03762098A EP 03762098 A EP03762098 A EP 03762098A EP 1546779 A4 EP1546779 A4 EP 1546779A4
Authority
EP
European Patent Office
Prior art keywords
multiple optical
optical wave
wave lengths
detecting multiple
detecting
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.)
Withdrawn
Application number
EP03762098A
Other languages
English (en)
French (fr)
Other versions
EP1546779A2 (de
Inventor
Daniel Levner
Martin F Fay
Jingming Xu
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.)
Brown University Research Foundation Inc
Original Assignee
Brown University Research Foundation Inc
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 Brown University Research Foundation Inc filed Critical Brown University Research Foundation Inc
Publication of EP1546779A2 publication Critical patent/EP1546779A2/de
Publication of EP1546779A4 publication Critical patent/EP1546779A4/de
Withdrawn legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02Optical fibres with cladding with or without a coating
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/26Optical coupling means
    • G02B6/28Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/293Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29304Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by diffraction, e.g. grating
    • G02B6/29316Light guides comprising a diffractive element, e.g. grating in or on the light guide such that diffracted light is confined in the light guide
    • G02B6/29323Coupling to or out of the diffractive element through the lateral surface of the light guide
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02Optical fibres with cladding with or without a coating
    • G02B6/02057Optical fibres with cladding with or without a coating comprising gratings
    • G02B6/02061Grating external to the fibre and in contact with the fibre, e.g. evanescently coupled, gratings applied to the fibre end
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/10Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
    • G02B6/12Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
    • G02B6/12007Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind forming wavelength selective elements, e.g. multiplexer, demultiplexer
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/26Optical coupling means
    • G02B6/28Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/293Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/26Optical coupling means
    • G02B6/28Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/293Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29331Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by evanescent wave coupling
    • G02B6/29332Wavelength selective couplers, i.e. based on evanescent coupling between light guides, e.g. fused fibre couplers with transverse coupling between fibres having different propagation constant wavelength dependency
    • G02B6/29334Grating-assisted evanescent light guide couplers, i.e. comprising grating at or functionally associated with the coupling region between the light guides, e.g. with a grating positioned where light fields overlap in the coupler
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/26Optical coupling means
    • G02B6/28Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/293Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29379Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device
    • G02B6/2938Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device for multiplexing or demultiplexing, i.e. combining or separating wavelengths, e.g. 1xN, NxM
    • G02B6/29382Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device for multiplexing or demultiplexing, i.e. combining or separating wavelengths, e.g. 1xN, NxM including at least adding or dropping a signal, i.e. passing the majority of signals
    • G02B6/29383Adding and dropping
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/26Optical coupling means
    • G02B6/28Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/293Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29379Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device
    • G02B6/29391Power equalisation of different channels, e.g. power flattening
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/015Devices 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 having potential barriers, e.g. having a PN or PIN junction
    • G02F1/025Devices 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 having potential barriers, e.g. having a PN or PIN junction in an optical waveguide structure
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/061Devices 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 electro-optical organic material
    • G02F1/065Devices 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 electro-optical organic material in an optical waveguide structure
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02Optical fibres with cladding with or without a coating
    • G02B6/02057Optical fibres with cladding with or without a coating comprising gratings
    • G02B6/02076Refractive index modulation gratings, e.g. Bragg gratings
    • G02B6/0208Refractive index modulation gratings, e.g. Bragg gratings characterised by their structure, wavelength response
    • G02B6/02085Refractive index modulation gratings, e.g. Bragg gratings characterised by their structure, wavelength response characterised by the grating profile, e.g. chirped, apodised, tilted, helical
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02Optical fibres with cladding with or without a coating
    • G02B6/02057Optical fibres with cladding with or without a coating comprising gratings
    • G02B6/02076Refractive index modulation gratings, e.g. Bragg gratings
    • G02B6/02123Refractive index modulation gratings, e.g. Bragg gratings characterised by the method of manufacture of the grating
    • G02B6/02147Point by point fabrication, i.e. grating elements induced one step at a time along the fibre, e.g. by scanning a laser beam, arc discharge scanning
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02Optical fibres with cladding with or without a coating
    • G02B6/02057Optical fibres with cladding with or without a coating comprising gratings
    • G02B6/02076Refractive index modulation gratings, e.g. Bragg gratings
    • G02B6/02123Refractive index modulation gratings, e.g. Bragg gratings characterised by the method of manufacture of the grating
    • G02B6/02152Refractive index modulation gratings, e.g. Bragg gratings characterised by the method of manufacture of the grating involving moving the fibre or a manufacturing element, stretching of the fibre
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02Optical fibres with cladding with or without a coating
    • G02B6/02057Optical fibres with cladding with or without a coating comprising gratings
    • G02B6/02076Refractive index modulation gratings, e.g. Bragg gratings
    • G02B6/02195Refractive index modulation gratings, e.g. Bragg gratings characterised by means for tuning the grating
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/26Optical coupling means
    • G02B6/28Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/293Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29304Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by diffraction, e.g. grating
    • G02B6/29316Light guides comprising a diffractive element, e.g. grating in or on the light guide such that diffracted light is confined in the light guide
    • G02B6/29317Light guides of the optical fibre type
    • G02B6/29319With a cascade of diffractive elements or of diffraction operations
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/26Optical coupling means
    • G02B6/28Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/293Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29304Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by diffraction, e.g. grating
    • G02B6/29316Light guides comprising a diffractive element, e.g. grating in or on the light guide such that diffracted light is confined in the light guide
    • G02B6/29317Light guides of the optical fibre type
    • G02B6/29322Diffractive elements of the tunable type
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/26Optical coupling means
    • G02B6/28Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/293Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29379Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device
    • G02B6/29395Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device configurable, e.g. tunable or reconfigurable
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F2201/00Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/30Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 grating
    • G02F2201/307Reflective grating, i.e. Bragg grating

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optical Communication System (AREA)
  • Optical Integrated Circuits (AREA)
EP03762098A 2002-06-27 2003-06-27 Verfahren und vorrichtung zum erkennen mehrerer optischer wellenlängen Withdrawn EP1546779A4 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US39230602P 2002-06-27 2002-06-27
US392306P 2002-06-27
US39320902P 2002-07-01 2002-07-01
US393209P 2002-07-01
PCT/US2003/020237 WO2004003598A2 (en) 2002-06-27 2003-06-27 Method and apparatus for detecting multiple optical wave lengths

Publications (2)

Publication Number Publication Date
EP1546779A2 EP1546779A2 (de) 2005-06-29
EP1546779A4 true EP1546779A4 (de) 2009-09-02

Family

ID=30003237

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03762098A Withdrawn EP1546779A4 (de) 2002-06-27 2003-06-27 Verfahren und vorrichtung zum erkennen mehrerer optischer wellenlängen

Country Status (7)

Country Link
EP (1) EP1546779A4 (de)
KR (1) KR20050013165A (de)
CN (1) CN1692295B (de)
AU (1) AU2003253727A1 (de)
CA (1) CA2490768A1 (de)
MX (1) MXPA05000188A (de)
WO (1) WO2004003598A2 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7496257B2 (en) 2001-07-03 2009-02-24 Brown University Research Foundation Method and apparatus for detecting multiple optical wavelengths
MXPA04000186A (es) 2001-07-03 2004-10-27 Univ Brown Res Found Metodo y aparato para procesar senales opticas con superrejillas.
CA2511944C (en) 2002-12-26 2010-09-28 Nippon Telegraph And Telephone Corporation Wave transmission medium and waveguide circuit
JP5831206B2 (ja) 2011-12-21 2015-12-09 富士通株式会社 光スイッチ素子、光復調器、光復調方法
TWI688755B (zh) * 2014-05-29 2020-03-21 布朗大學 用於判定基板中之應力的光學系統及方法以及具有電腦可執行指令之電腦儲存媒體
US10185303B2 (en) 2015-02-21 2019-01-22 Kla-Tencor Corporation Optimizing computational efficiency by multiple truncation of spatial harmonics
KR102456898B1 (ko) * 2016-03-17 2022-10-19 삼성에스디에스 주식회사 데이터 신호의 표준 패턴 생성 방법 및 그 장치
US11165508B2 (en) * 2018-07-25 2021-11-02 Corning Incorporated Communications systems comprising waveguide arrays for realizing localized quantum walks
CN110857977A (zh) * 2018-08-23 2020-03-03 北京万集科技股份有限公司 光学天线、相控阵激光雷达及光学天线的二维扫描方法
JP2020148875A (ja) * 2019-03-13 2020-09-17 株式会社フジクラ レンズ部材、導光部材、及びレーザ装置
WO2021071664A1 (en) * 2019-10-08 2021-04-15 Corning Incorporated Optical systems comprising binary photonics lattices
CN113671770B (zh) * 2020-05-15 2024-04-09 华为技术有限公司 一种光选择开关、节点装置
CN114499673A (zh) * 2020-11-12 2022-05-13 莫列斯有限公司 光放大器模块及其增益控制方法
CN113067238B (zh) * 2021-03-19 2022-02-22 中国计量大学 一种产生单光子的谐振腔及单光子源系统

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001011401A1 (en) * 1999-08-05 2001-02-15 Daniel Levner Synthesis of supergratings by fourier methods

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5703710A (en) * 1994-09-09 1997-12-30 Deacon Research Method for manipulating optical energy using poled structure
US5832156A (en) * 1996-10-31 1998-11-03 Lucent Technologies Inc. Article comprising an optical waveguide tap
US6289032B1 (en) * 1998-04-16 2001-09-11 Governing Council Of The University Of Toronto Self-collimating multiwavelength lasers
US6181852B1 (en) * 1998-09-23 2001-01-30 Lucent Technologies Inc. Optical grating device with variable coating
US6424763B1 (en) * 1999-10-28 2002-07-23 Massachusetts Institute Of Technology Tunable add/drop filter using side-coupled resonant tunneling
US6393173B1 (en) * 2000-03-28 2002-05-21 Lucent Technologies Inc. 2×2 integrated optical cross-connect

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001011401A1 (en) * 1999-08-05 2001-02-15 Daniel Levner Synthesis of supergratings by fourier methods

Also Published As

Publication number Publication date
KR20050013165A (ko) 2005-02-02
WO2004003598A3 (en) 2005-04-28
EP1546779A2 (de) 2005-06-29
WO2004003598A2 (en) 2004-01-08
AU2003253727A1 (en) 2004-01-19
MXPA05000188A (es) 2005-09-08
CA2490768A1 (en) 2004-01-08
CN1692295A (zh) 2005-11-02
CN1692295B (zh) 2011-05-04

Similar Documents

Publication Publication Date Title
IL162696A0 (en) Apparatus and method for endoscopiccolectomy
HK1070131A1 (en) Method and system for inspecting optical devices
EP1547755A4 (de) Rohrverbindungsvorrichtung und rohrverbindungsverfahren
EP1555111A4 (de) Rohrfügevorrichtung und rohrfügeverfahren
GB2397393B (en) Optical apparatus and method
GB0201955D0 (en) Apparatus and method
GB0228808D0 (en) Method and apparatus for measuring distance
EP1546779A4 (de) Verfahren und vorrichtung zum erkennen mehrerer optischer wellenlängen
GB2386186B (en) Method and apparatus for object detection and ranging
AU2003270627A8 (en) Optical cross connect apparatus and method
AU2003251919A8 (en) Optical coupler apparatus and methods having reduced geometry sensitivity
EP1589332A4 (de) Vorrichtung und verfahren zur kontinuierlichen optischen messung
GB0216815D0 (en) Detection method and apparatus
AU2003211468A1 (en) Apparatus and method for inspecting motorcycle
EP1502092A4 (de) Optisches testverfahren und vorrichtung
AU2003302445A1 (en) An optical measurement apparatus and method
AU2003297889A8 (en) Method and apparatus for asperity detection
AU2003214281A1 (en) Method and apparatus for sensing
GB0114927D0 (en) Method and apparatus for detecting data
GB0202121D0 (en) Method and apparatus
AU2003253009A1 (en) Method and apparatus for determining ischaemia
GB0216620D0 (en) Detection method and apparatus
GB0216622D0 (en) Detection method and apparatus
AU2002353201A8 (en) Method and apparatus for cancer detection
GB0207303D0 (en) Optical testing methods and apparatus

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20050117

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

DAX Request for extension of the european patent (deleted)
RIN1 Information on inventor provided before grant (corrected)

Inventor name: XU, JINGMING

Inventor name: FAY, MARTIN, F.

Inventor name: LEVNER, DANIEL

A4 Supplementary search report drawn up and despatched

Effective date: 20090803

17Q First examination report despatched

Effective date: 20091117

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20140130