DE69705857D1 - System zur messung des geräterauschens - Google Patents

System zur messung des geräterauschens

Info

Publication number
DE69705857D1
DE69705857D1 DE69705857T DE69705857T DE69705857D1 DE 69705857 D1 DE69705857 D1 DE 69705857D1 DE 69705857 T DE69705857 T DE 69705857T DE 69705857 T DE69705857 T DE 69705857T DE 69705857 D1 DE69705857 D1 DE 69705857D1
Authority
DE
Germany
Prior art keywords
measurement system
device replacement
replacement measurement
replacement
measurement
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
DE69705857T
Other languages
English (en)
Other versions
DE69705857T2 (de
Inventor
Michael Cox
Nigel Copner
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
UK Secretary of State for Defence
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 UK Secretary of State for Defence filed Critical UK Secretary of State for Defence
Application granted granted Critical
Publication of DE69705857D1 publication Critical patent/DE69705857D1/de
Publication of DE69705857T2 publication Critical patent/DE69705857T2/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
    • H01S5/00—Semiconductor lasers
    • H01S5/0014—Measuring characteristics or properties thereof
    • 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
    • H01S3/0014—Monitoring arrangements not otherwise provided for

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Lasers (AREA)
  • Semiconductor Lasers (AREA)
  • Testing Of Individual Semiconductor Devices (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)
DE69705857T 1996-10-26 1997-10-13 System zur messung des geräterauschens Expired - Fee Related DE69705857T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9622338.3A GB9622338D0 (en) 1996-10-26 1996-10-26 Device noise measurement system
PCT/GB1997/002814 WO1998019173A1 (en) 1996-10-26 1997-10-13 Device noise measurement system

Publications (2)

Publication Number Publication Date
DE69705857D1 true DE69705857D1 (de) 2001-08-30
DE69705857T2 DE69705857T2 (de) 2001-11-08

Family

ID=10802012

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69705857T Expired - Fee Related DE69705857T2 (de) 1996-10-26 1997-10-13 System zur messung des geräterauschens

Country Status (7)

Country Link
US (1) US6320179B1 (de)
EP (1) EP0935759B1 (de)
JP (1) JP2001503145A (de)
CA (1) CA2269777A1 (de)
DE (1) DE69705857T2 (de)
GB (1) GB9622338D0 (de)
WO (1) WO1998019173A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10044405C2 (de) * 2000-09-08 2003-07-10 Max Planck Gesellschaft Verfahren zur Erzeugung von Radiofrequenzwellen und Radiofrequenzgenerator
US6710865B2 (en) * 2000-09-14 2004-03-23 N&K Technology, Inc. Method of inferring optical parameters outside of a measurement spectral range
US6731381B2 (en) * 2001-02-27 2004-05-04 Tyco Telecommunications (Us) Inc. Method and apparatus to measure gain spectra of erbium doped fiber amplifier
JP2007294659A (ja) * 2006-04-25 2007-11-08 Agilent Technol Inc 相対強度雑音測定方法、装置、およびその利得特性測定方法
US10271778B2 (en) * 2008-06-03 2019-04-30 Nonin Medical, Inc. LED control utilizing ambient light or signal quality
CN103575511B (zh) * 2013-11-06 2016-06-29 湖南工学院 一种激光器相对强度噪声的测量装置及方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4218140A (en) * 1978-08-21 1980-08-19 Lambda Instruments Co. Light meter
JPH02189474A (ja) * 1989-01-18 1990-07-25 Fujitsu Ltd 光受信器の特性測定方法及び装置
US5087808A (en) * 1991-02-26 1992-02-11 Reed Edwin A Combined optical power and noise meter
US5534996A (en) * 1993-09-21 1996-07-09 Advantest Corporation Measurement apparatus for evaluating characteristics of light emitting devices

Also Published As

Publication number Publication date
DE69705857T2 (de) 2001-11-08
JP2001503145A (ja) 2001-03-06
GB9622338D0 (en) 1996-12-18
EP0935759B1 (de) 2001-07-25
WO1998019173A1 (en) 1998-05-07
US6320179B1 (en) 2001-11-20
EP0935759A1 (de) 1999-08-18
CA2269777A1 (en) 1998-05-07

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: QINETIQ LTD., LONDON, GB

8339 Ceased/non-payment of the annual fee