GB2360601B - Enhanced resolution attenuator - Google Patents

Enhanced resolution attenuator

Info

Publication number
GB2360601B
GB2360601B GB0006938A GB0006938A GB2360601B GB 2360601 B GB2360601 B GB 2360601B GB 0006938 A GB0006938 A GB 0006938A GB 0006938 A GB0006938 A GB 0006938A GB 2360601 B GB2360601 B GB 2360601B
Authority
GB
United Kingdom
Prior art keywords
enhanced resolution
attenuator
resolution attenuator
enhanced
resolution
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
GB0006938A
Other versions
GB0006938D0 (en
GB2360601A8 (en
GB2360601A (en
Inventor
Roger Warwick Brown
Earl Anthony Dennis
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.)
Marconi Communications Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconi Communications Ltd
Marconi Co Ltd
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 Marconi Communications Ltd, Marconi Co Ltd filed Critical Marconi Communications Ltd
Priority to GB0006938A priority Critical patent/GB2360601B/en
Publication of GB0006938D0 publication Critical patent/GB0006938D0/en
Priority to DE60135734T priority patent/DE60135734D1/en
Priority to AU2001242576A priority patent/AU2001242576A1/en
Priority to CNB018070418A priority patent/CN100417020C/en
Priority to EP01915485A priority patent/EP1269628B1/en
Priority to JP2001569971A priority patent/JP2003528524A/en
Priority to US10/239,382 priority patent/US6747778B2/en
Priority to EP08158701A priority patent/EP1978640A3/en
Priority to CN2008101284541A priority patent/CN101311775B/en
Priority to PCT/GB2001/001309 priority patent/WO2001071914A1/en
Publication of GB2360601A publication Critical patent/GB2360601A/en
Publication of GB2360601A8 publication Critical patent/GB2360601A8/en
Priority to HK01107648A priority patent/HK1036846A1/en
Application granted granted Critical
Publication of GB2360601B publication Critical patent/GB2360601B/en
Priority to US10/764,732 priority patent/US6934458B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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 
    • G02F1/0121—Operation of devices; Circuit arrangements, not otherwise provided for in this subclass
    • 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 
    • G02F1/0147—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 thermo-optic effects
    • 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
    • G02F2203/48—Variable attenuator

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)
  • Amplifiers (AREA)
GB0006938A 2000-03-23 2000-03-23 Enhanced resolution attenuator Expired - Fee Related GB2360601B (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
GB0006938A GB2360601B (en) 2000-03-23 2000-03-23 Enhanced resolution attenuator
EP08158701A EP1978640A3 (en) 2000-03-23 2001-03-23 Optical attenuator
PCT/GB2001/001309 WO2001071914A1 (en) 2000-03-23 2001-03-23 Method and apparatus for generating a pulse width modulated signal and optical attenuator controlled by a pulse width modulated signal
AU2001242576A AU2001242576A1 (en) 2000-03-23 2001-03-23 Method and apparatus for generating a pulse width modulated signal and optical attenuator controlled by a pulse width modulated signal
CNB018070418A CN100417020C (en) 2000-03-23 2001-03-23 Method and apparatus for generating a pulse width modulated signal and optical attenuator controlled by a pulse width modulated signal
EP01915485A EP1269628B1 (en) 2000-03-23 2001-03-23 Method and apparatus for generating a pulse width modulated signal
JP2001569971A JP2003528524A (en) 2000-03-23 2001-03-23 Method and apparatus for generating a pulse width modulated signal and an optical attenuator controlled by the pulse width modulated signal
US10/239,382 US6747778B2 (en) 2000-03-23 2001-03-23 Method and apparatus for generating a pulse width modulated signal and optical attenuator controlled by a pulse width modulated signal
DE60135734T DE60135734D1 (en) 2000-03-23 2001-03-23 METHOD AND DEVICE FOR PRODUCING A PULSE-WIDE MODULATED SIGNAL
CN2008101284541A CN101311775B (en) 2000-03-23 2001-03-23 Optical attenuator
HK01107648A HK1036846A1 (en) 2000-03-23 2001-11-01 Enhanced resolution attenuator
US10/764,732 US6934458B2 (en) 2000-03-23 2004-01-26 Method and apparatus for generating a pulse width modulated signal and optical attenuator controlled by a pulse width modulated signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0006938A GB2360601B (en) 2000-03-23 2000-03-23 Enhanced resolution attenuator

Publications (4)

Publication Number Publication Date
GB0006938D0 GB0006938D0 (en) 2000-05-10
GB2360601A GB2360601A (en) 2001-09-26
GB2360601A8 GB2360601A8 (en) 2001-10-10
GB2360601B true GB2360601B (en) 2002-02-13

Family

ID=9888192

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0006938A Expired - Fee Related GB2360601B (en) 2000-03-23 2000-03-23 Enhanced resolution attenuator

Country Status (3)

Country Link
CN (1) CN101311775B (en)
GB (1) GB2360601B (en)
HK (1) HK1036846A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9231701B2 (en) * 2013-08-29 2016-01-05 Corning Optical Communications Wireless Ltd Attenuation systems with cooling functions and related components and methods

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09318486A (en) * 1996-05-31 1997-12-12 Ando Electric Co Ltd Testing device of light attenuator
GB2329721A (en) * 1997-09-24 1999-03-31 Northern Telecom Ltd Optical attenuator

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5966493A (en) * 1998-02-20 1999-10-12 Molecular Optoelectronics Corporation Fiber optic attenuators and attenuation systems

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09318486A (en) * 1996-05-31 1997-12-12 Ando Electric Co Ltd Testing device of light attenuator
GB2329721A (en) * 1997-09-24 1999-03-31 Northern Telecom Ltd Optical attenuator

Also Published As

Publication number Publication date
HK1036846A1 (en) 2002-01-18
GB0006938D0 (en) 2000-05-10
GB2360601A8 (en) 2001-10-10
CN101311775B (en) 2011-11-23
GB2360601A (en) 2001-09-26
CN101311775A (en) 2008-11-26

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20160323