ITMI970951A0 - - Google Patents

Info

Publication number
ITMI970951A0
ITMI970951A0 ITMI970951A ITMI970951A ITMI970951A0 IT MI970951 A0 ITMI970951 A0 IT MI970951A0 IT MI970951 A ITMI970951 A IT MI970951A IT MI970951 A ITMI970951 A IT MI970951A IT MI970951 A0 ITMI970951 A0 IT MI970951A0
Authority
IT
Italy
Application number
ITMI970951A
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 filed Critical
Publication of ITMI970951A0 publication Critical patent/ITMI970951A0/it
Publication of ITMI970951A1 publication Critical patent/ITMI970951A1/it
Application granted granted Critical
Publication of IT1291645B1 publication Critical patent/IT1291645B1/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/29—Repeaters
    • H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
    • H04B10/293—Signal power control
    • H04B10/294—Signal power control in a multiwavelength system, e.g. gain equalisation
    • H04B10/296—Transient power control, e.g. due to channel add/drop or rapid fluctuations in the input power
    • 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
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
    • H01S3/1301—Stabilisation of laser output parameters, e.g. frequency or amplitude in optical amplifiers
    • H01S3/13013—Stabilisation of laser output parameters, e.g. frequency or amplitude in optical amplifiers by controlling the optical pumping
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/29—Repeaters
    • H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
    • H04B10/293—Signal power control
    • H04B10/294—Signal power control in a multiwavelength system, e.g. gain equalisation
    • H04B10/2942—Signal power control in a multiwavelength system, e.g. gain equalisation using automatic gain control [AGC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0221—Power control, e.g. to keep the total optical power constant
    • 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
    • H01S2301/00—Functional characteristics
    • H01S2301/02—ASE (amplified spontaneous emission), noise; Reduction 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
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067—Fibre lasers
    • H01S3/06754—Fibre amplifiers
    • 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
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
    • H01S3/1305—Feedback control systems

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Lasers (AREA)
  • Optical Communication System (AREA)
  • Glass Compositions (AREA)
IT97MI000951A 1996-04-23 1997-04-22 Dispositivo di amplificazione ottica e apparecchiatura di trasferimento di luce multiplata in lunghezza d'onda IT1291645B1 (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8100911A JP2904114B2 (ja) 1996-04-23 1996-04-23 光増幅装置とこれを用いた波長多重光伝送装置

Publications (3)

Publication Number Publication Date
ITMI970951A0 true ITMI970951A0 (it) 1997-04-22
ITMI970951A1 ITMI970951A1 (it) 1998-10-22
IT1291645B1 IT1291645B1 (it) 1999-01-19

Family

ID=14286531

Family Applications (1)

Application Number Title Priority Date Filing Date
IT97MI000951A IT1291645B1 (it) 1996-04-23 1997-04-22 Dispositivo di amplificazione ottica e apparecchiatura di trasferimento di luce multiplata in lunghezza d'onda

Country Status (4)

Country Link
US (1) US5933262A (it)
JP (1) JP2904114B2 (it)
FR (1) FR2747849B1 (it)
IT (1) IT1291645B1 (it)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3075200B2 (ja) * 1996-12-10 2000-08-07 日本電気株式会社 信号光モニタとこれを用いた光増幅器
JPH10229386A (ja) * 1997-02-17 1998-08-25 Nec Corp 光ファイバアンプとこれを用いた光通信システム
JP3050304B2 (ja) * 1997-12-04 2000-06-12 日本電気株式会社 光ａｄｍ装置
JP3102397B2 (ja) 1997-12-10 2000-10-23 日本電気株式会社 光波長多重伝送システム
JP3166695B2 (ja) 1998-01-05 2001-05-14 日本電気株式会社 波長分割多重送信装置
JP3063724B2 (ja) * 1998-01-16 2000-07-12 日本電気株式会社 Ｗｄｍ光直接増幅器
JP4190545B2 (ja) * 1998-02-06 2008-12-03 富士通株式会社 光増幅器及び光増幅器の制御方法
JP3251223B2 (ja) 1998-02-25 2002-01-28 日本電気株式会社 光増幅器
JPH11284574A (ja) * 1998-03-31 1999-10-15 Nec Corp 光送信器、波長多重光送信器、及び光伝送方法
JP2943802B1 (ja) * 1998-08-07 1999-08-30 日本電気株式会社 可変波長フィルタ装置及び可変波長フィルタの制御方法
JP3851007B2 (ja) 1998-12-18 2006-11-29 富士通株式会社 波長多重光検出装置
JP3583309B2 (ja) 1999-02-17 2004-11-04 富士通株式会社 多波長光アンプの制御方法及びその装置
JP3338007B2 (ja) * 1999-09-10 2002-10-28 古河電気工業株式会社 光増幅器及び波長多重光通信システム
US6356386B1 (en) 2000-02-29 2002-03-12 Lucent Technologies Inc. Method and apparatus for stabilizing transient control in amplified optical networks
US6498677B1 (en) * 2000-10-23 2002-12-24 Onetta, Inc. Optical amplifier systems with transient control
KR100358115B1 (ko) * 2000-12-14 2002-10-25 한국전자통신연구원 자동 이득 제어된 광섬유 증폭 장치
US6999686B1 (en) * 2001-02-01 2006-02-14 Ciena Corporation Wavelength management in an optical network
WO2002103937A1 (fr) * 2001-06-18 2002-12-27 Fujitsu Limited Systeme et appareil de telecommunication par fibre optique

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2787820B2 (ja) * 1990-07-20 1998-08-20 キヤノン株式会社 波長多重光通信システム及びそこで用いられる光増幅装置
JP2734778B2 (ja) * 1991-01-16 1998-04-02 日本電気株式会社 光増幅装置
US5600473A (en) * 1993-06-04 1997-02-04 Ciena Corporation Optical amplifier systems with add/drop multiplexing
JP2550898B2 (ja) * 1993-11-30 1996-11-06 日本電気株式会社 光増幅装置
FR2715017B1 (fr) * 1994-01-13 1996-02-16 Alcatel Nv Procédé de transmission et liaison optique à multiplexage spectral avec amplification.
JPH0837497A (ja) * 1994-05-20 1996-02-06 Fujitsu Ltd 光増幅器及び光送信装置
JP2723067B2 (ja) * 1995-03-14 1998-03-09 日本電気株式会社 光増幅装置

Also Published As

Publication number Publication date
ITMI970951A1 (it) 1998-10-22
JP2904114B2 (ja) 1999-06-14
JPH09289503A (ja) 1997-11-04
US5933262A (en) 1999-08-03
FR2747849A1 (fr) 1997-10-24
IT1291645B1 (it) 1999-01-19
FR2747849B1 (fr) 1999-07-02

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Legal Events

Date Code Title Description
0001 Granted