DE69809490D1 - Verfahren und Vorrichtung zur Verringerung überschussigen Photonenrauschens in Lichtquellen kurzer Kohärenz - Google Patents

Verfahren und Vorrichtung zur Verringerung überschussigen Photonenrauschens in Lichtquellen kurzer Kohärenz

Info

Publication number
DE69809490D1
DE69809490D1 DE69809490T DE69809490T DE69809490D1 DE 69809490 D1 DE69809490 D1 DE 69809490D1 DE 69809490 T DE69809490 T DE 69809490T DE 69809490 T DE69809490 T DE 69809490T DE 69809490 D1 DE69809490 D1 DE 69809490D1
Authority
DE
Germany
Prior art keywords
light sources
short coherence
reducing excess
photon noise
excess photon
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.)
Expired - Fee Related
Application number
DE69809490T
Other languages
English (en)
Other versions
DE69809490T2 (de
Inventor
Bernard G Fidric
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.)
Northrop Grumman Guidance and Electronics Co Inc
Original Assignee
Litton Systems 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 Litton Systems Inc filed Critical Litton Systems Inc
Application granted granted Critical
Publication of DE69809490D1 publication Critical patent/DE69809490D1/de
Publication of DE69809490T2 publication Critical patent/DE69809490T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
    • 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
    • G02B6/2861—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 fibre optic delay lines and optical elements associated with them, e.g. for use in signal processing, e.g. filtering

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Led Devices (AREA)
  • Gyroscopes (AREA)
  • Lasers (AREA)
DE69809490T 1997-04-02 1998-01-19 Verfahren und Vorrichtung zur Verringerung überschussigen Photonenrauschens in Lichtquellen kurzer Kohärenz Expired - Fee Related DE69809490T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/832,419 US5978528A (en) 1997-04-02 1997-04-02 Method and apparatus for reducing excess photon noise in short coherence light sources

Publications (2)

Publication Number Publication Date
DE69809490D1 true DE69809490D1 (de) 2003-01-02
DE69809490T2 DE69809490T2 (de) 2003-04-03

Family

ID=25261588

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69809490T Expired - Fee Related DE69809490T2 (de) 1997-04-02 1998-01-19 Verfahren und Vorrichtung zur Verringerung überschussigen Photonenrauschens in Lichtquellen kurzer Kohärenz

Country Status (4)

Country Link
US (1) US5978528A (de)
EP (1) EP0869589B1 (de)
JP (1) JP4006509B2 (de)
DE (1) DE69809490T2 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11326826A (ja) * 1998-05-13 1999-11-26 Sony Corp 照明方法及び照明装置
JPH11326827A (ja) * 1998-05-20 1999-11-26 Sony Corp 光のコヒーレンス低減方法及びその装置、並びに、照明方法及びその装置
US6429965B1 (en) 1998-11-02 2002-08-06 The Board Of Trustees The Leland Stanford Junior University Polarization and wavelength stable superfluorescent sources
EP1037413B1 (de) * 1999-03-15 2003-02-19 Corning O.T.I., Inc. Optische Vorrichtung zum Auswählen eines vorbestimmten Informationssatzes aus einem kohärenten optischen Signal
US7050222B2 (en) * 2003-05-23 2006-05-23 Covega, Inc. Methods and devices for high power, depolarized superluminescent diodes
KR100560387B1 (ko) * 2003-12-24 2006-03-13 한국전자통신연구원 단일/다중 모드 변환기, 및 이를 이용한 광 부호 분할다중 접속 시스템
WO2012121357A1 (en) 2011-03-04 2012-09-13 Canon Kabushiki Kaisha Stimulated raman scattering detection apparatus
WO2013074444A1 (en) * 2011-11-18 2013-05-23 Applied Materials, Inc. Broadband laser source for laser thermal processing and photonically activated processes
KR101477355B1 (ko) * 2012-11-22 2014-12-30 한국과학기술원 간섭형 잡음억제장치 및 이를 포함하는 광통신 시스템
WO2019132773A1 (en) 2017-12-28 2019-07-04 Ams Sensors Singapore Pte. Ltd. Light-emitting optoelectronic modules

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4588255A (en) * 1982-06-21 1986-05-13 The Board Of Trustees Of The Leland Stanford Junior University Optical guided wave signal processor for matrix-vector multiplication and filtering
US4521075A (en) * 1983-03-07 1985-06-04 Obenschain Stephen P Controllable spatial incoherence echelon for laser
US4652079A (en) * 1983-08-26 1987-03-24 The Board Of Trustees Of The Leland Stanford Junior University High speed pulse train generator
US4938556A (en) * 1983-11-25 1990-07-03 The Board Of Trustees Of The Leland Stanford Junior University Superfluorescent broadband fiber laser source
EP0180322B1 (de) * 1984-09-28 1989-05-03 Fuji Electric Co., Ltd. Teilentladungsmesseinrichtung
US4637025A (en) * 1984-10-22 1987-01-13 Polaroid Corporation Super radiant light source
US4768853A (en) * 1986-08-08 1988-09-06 Corning Glass Works Optical fiber dispersion transformer
US5108183A (en) * 1989-08-31 1992-04-28 The Board Of Trustees Of The Leland Stanford Junior University Interferometer utilizing superfluorescent optical source
US5313480A (en) * 1990-09-18 1994-05-17 Litton Systems, Inc. Stabilization apparatus and method for an SFS
DE4124311A1 (de) * 1991-07-23 1993-01-28 Zeiss Carl Fa Anordnung zur kohaerenzreduktion und strahlformung eines laserstrahls
DK153791A (da) * 1991-09-02 1993-03-03 Nkt Res Center As Fremgangsmaade til undertrykkelse af rin i kohaerente optiske systemer, saasom kommunikationsmodtagere
JP3158706B2 (ja) * 1992-09-09 2001-04-23 株式会社日立製作所 光分配装置
US5311603A (en) * 1992-10-28 1994-05-10 Litton Systems Inc. Highly efficient superfluorescent fiber laser/amplifier for interferometric sensors
US5680120A (en) * 1996-07-12 1997-10-21 Aspen Systems Inc. Transportation safety apparatus and method

Also Published As

Publication number Publication date
EP0869589A3 (de) 1999-08-04
US5978528A (en) 1999-11-02
JP4006509B2 (ja) 2007-11-14
DE69809490T2 (de) 2003-04-03
EP0869589A2 (de) 1998-10-07
EP0869589B1 (de) 2002-11-20
JPH10284776A (ja) 1998-10-23

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee