DE60135734D1 - Verfahren und vorrichtung zum erzeugen eines pulsbreitenmodulierten signals - Google Patents
Verfahren und vorrichtung zum erzeugen eines pulsbreitenmodulierten signalsInfo
- Publication number
- DE60135734D1 DE60135734D1 DE60135734T DE60135734T DE60135734D1 DE 60135734 D1 DE60135734 D1 DE 60135734D1 DE 60135734 T DE60135734 T DE 60135734T DE 60135734 T DE60135734 T DE 60135734T DE 60135734 D1 DE60135734 D1 DE 60135734D1
- Authority
- DE
- Germany
- Prior art keywords
- pulse
- producing
- modulated signal
- wide modulated
- wide
- 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 - Lifetime
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
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0006938A GB2360601B (en) | 2000-03-23 | 2000-03-23 | Enhanced resolution attenuator |
GB0027390A GB2368986B (en) | 2000-11-09 | 2000-11-09 | Pulse width modulation method |
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 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE60135734D1 true DE60135734D1 (de) | 2008-10-23 |
Family
ID=26243935
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE60135734T Expired - Lifetime DE60135734D1 (de) | 2000-03-23 | 2001-03-23 | Verfahren und vorrichtung zum erzeugen eines pulsbreitenmodulierten signals |
Country Status (7)
Country | Link |
---|---|
US (2) | US6747778B2 (de) |
EP (2) | EP1978640A3 (de) |
JP (1) | JP2003528524A (de) |
CN (1) | CN100417020C (de) |
AU (1) | AU2001242576A1 (de) |
DE (1) | DE60135734D1 (de) |
WO (1) | WO2001071914A1 (de) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003528524A (ja) * | 2000-03-23 | 2003-09-24 | マルコニ コミュニケイションズ リミテッド | パルス巾変調信号を発生する方法及び装置並びにパルス巾変調信号により制御される光学的減衰器 |
GB0130214D0 (en) * | 2001-12-18 | 2002-02-06 | Cit Alcatel | Supervisory signalling for optical communications equipment |
JP4593073B2 (ja) * | 2002-12-26 | 2010-12-08 | 株式会社半導体エネルギー研究所 | レーザ照射装置 |
CN1310427C (zh) * | 2004-02-25 | 2007-04-11 | 凌阳科技股份有限公司 | 脉波宽度调变电路与方法 |
US7433606B2 (en) * | 2004-06-28 | 2008-10-07 | Jds Uniphase Corporation | Photodiode bias controller for optical receiver |
US7459951B2 (en) * | 2006-02-22 | 2008-12-02 | Exar Corporation | Self-calibrating digital pulse-width modulator (DPWM) |
US7230837B1 (en) * | 2006-03-27 | 2007-06-12 | North Carolina State University | Method and circuit for cascaded pulse width modulation |
JP4840328B2 (ja) * | 2007-10-25 | 2011-12-21 | 住友電装株式会社 | Pwm制御方法及び装置、並びに、調光装置 |
EP2718643B1 (de) * | 2011-06-07 | 2021-04-21 | B/E Aerospace, Inc. | Thermoelektrisches kühlsystem für ein lebensmittel- und getränkefach |
CN102913428A (zh) * | 2011-08-01 | 2013-02-06 | 鸿富锦精密工业(深圳)有限公司 | 风扇模组测试系统 |
CN103036540B (zh) * | 2011-09-30 | 2015-05-20 | 北大方正集团有限公司 | 用于功率控制的脉宽调制方法和装置 |
CN103630756B (zh) * | 2013-12-09 | 2016-08-17 | 北京无线电计量测试研究所 | 一种大功率微波脉冲信号的校准方法 |
JP2016192882A (ja) * | 2015-03-31 | 2016-11-10 | 株式会社ジェイテクト | モータ制御装置 |
WO2019033306A1 (zh) * | 2017-08-16 | 2019-02-21 | 西门子公司 | 一种脉冲宽度调制信号的动态调整方法和装置 |
CN114584223B (zh) * | 2022-03-15 | 2023-07-21 | 中山大学 | 一种面向马赫-曾德尔干涉仪的脉冲宽度调制系统及方法 |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4019159A (en) | 1975-10-14 | 1977-04-19 | Hughes Aircraft Company | Optical frequency doubler using electro-optic crystal with improved feedback control of crystal phase match |
JPS5977721A (ja) * | 1982-10-26 | 1984-05-04 | Matsushita Electric Ind Co Ltd | パルス幅変調装置 |
GB2144005B (en) * | 1983-07-28 | 1986-10-22 | Rca Corp | Digital-to-analog converter useful in a television receiver |
JPS61251320A (ja) * | 1985-04-30 | 1986-11-08 | Meidensha Electric Mfg Co Ltd | パルス幅変調回路 |
AU618313B2 (en) | 1988-02-12 | 1991-12-19 | Dow Chemical Company, The | Epoxy resin composition containing latent catalysts |
US5191374A (en) * | 1988-11-17 | 1993-03-02 | Nikon Corporation | Exposure control apparatus |
DE3933491A1 (de) * | 1989-10-06 | 1991-04-18 | Endress Hauser Gmbh Co | Anordnung zur umwandlung einer elektrischen eingangsgroesse in ein dazu proportionales elektrisches gleichsignal |
JP2843191B2 (ja) * | 1992-01-30 | 1999-01-06 | 富士通株式会社 | 電子デバイスの駆動回路 |
DE69204984T2 (de) * | 1992-02-25 | 1996-02-08 | Hewlett Packard Gmbh | Optischer Abschwächer. |
US5764172A (en) * | 1996-04-05 | 1998-06-09 | Trimble Navigation Limited | Hybrid DAC suitable for use in a GPS receiver |
JPH09318486A (ja) | 1996-05-31 | 1997-12-12 | Ando Electric Co Ltd | 光減衰器の検査装置 |
JPH10335724A (ja) * | 1997-05-30 | 1998-12-18 | Kyocera Corp | 半導体レーザーの温度制御回路 |
GB2329721A (en) * | 1997-09-24 | 1999-03-31 | Northern Telecom Ltd | Optical attenuator |
US5966493A (en) * | 1998-02-20 | 1999-10-12 | Molecular Optoelectronics Corporation | Fiber optic attenuators and attenuation systems |
US6151438A (en) * | 1998-09-24 | 2000-11-21 | Lucent Technologies Inc. | Fiber device having variable refractive index region proximal the core |
GB2360602B (en) * | 2000-03-23 | 2002-05-01 | Marconi Comm Ltd | Optical attenuator including dual control loops |
JP2003528524A (ja) * | 2000-03-23 | 2003-09-24 | マルコニ コミュニケイションズ リミテッド | パルス巾変調信号を発生する方法及び装置並びにパルス巾変調信号により制御される光学的減衰器 |
US6404970B1 (en) * | 2000-05-22 | 2002-06-11 | Jds Uniphase Inc. | Variable optical attenuator |
US7016560B2 (en) * | 2001-02-28 | 2006-03-21 | Lightwave Microsystems Corporation | Microfluidic control for waveguide optical switches, variable attenuators, and other optical devices |
US6853758B2 (en) * | 2002-07-12 | 2005-02-08 | Optimer Photonics, Inc. | Scheme for controlling polarization in waveguides |
US6700517B1 (en) * | 2002-12-24 | 2004-03-02 | The United States Of America As Represented By The Secretary Of The Navy | Photonic analog-to-digital converter |
-
2001
- 2001-03-23 JP JP2001569971A patent/JP2003528524A/ja active Pending
- 2001-03-23 EP EP08158701A patent/EP1978640A3/de not_active Ceased
- 2001-03-23 EP EP01915485A patent/EP1269628B1/de not_active Expired - Lifetime
- 2001-03-23 DE DE60135734T patent/DE60135734D1/de not_active Expired - Lifetime
- 2001-03-23 WO PCT/GB2001/001309 patent/WO2001071914A1/en active IP Right Grant
- 2001-03-23 AU AU2001242576A patent/AU2001242576A1/en not_active Abandoned
- 2001-03-23 CN CNB018070418A patent/CN100417020C/zh not_active Expired - Fee Related
- 2001-03-23 US US10/239,382 patent/US6747778B2/en not_active Expired - Lifetime
-
2004
- 2004-01-26 US US10/764,732 patent/US6934458B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP1269628A1 (de) | 2003-01-02 |
US20040156642A1 (en) | 2004-08-12 |
AU2001242576A1 (en) | 2001-10-03 |
WO2001071914A1 (en) | 2001-09-27 |
CN100417020C (zh) | 2008-09-03 |
JP2003528524A (ja) | 2003-09-24 |
US6747778B2 (en) | 2004-06-08 |
EP1978640A3 (de) | 2008-10-22 |
EP1269628B1 (de) | 2008-09-10 |
EP1978640A2 (de) | 2008-10-08 |
US20030161639A1 (en) | 2003-08-28 |
US6934458B2 (en) | 2005-08-23 |
CN1419742A (zh) | 2003-05-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |