DE69737190D1 - Verfahren zur Änderung der Anzahl Kanäle in einem optischen Kommunikationsnetzwerk - Google Patents

Verfahren zur Änderung der Anzahl Kanäle in einem optischen Kommunikationsnetzwerk

Info

Publication number
DE69737190D1
DE69737190D1 DE69737190T DE69737190T DE69737190D1 DE 69737190 D1 DE69737190 D1 DE 69737190D1 DE 69737190 T DE69737190 T DE 69737190T DE 69737190 T DE69737190 T DE 69737190T DE 69737190 D1 DE69737190 D1 DE 69737190D1
Authority
DE
Germany
Prior art keywords
channels
changing
communication network
optical communication
optical
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
Application number
DE69737190T
Other languages
English (en)
Other versions
DE69737190T2 (de
Inventor
Yasushi Sugaya
Susumu Kinoshita
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=14561441&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69737190(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Publication of DE69737190D1 publication Critical patent/DE69737190D1/de
Application granted granted Critical
Publication of DE69737190T2 publication Critical patent/DE69737190T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01S3/05—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
    • H01S3/06758—Tandem 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
    • H01S3/1301—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
    • 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
    • H04B10/2912—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form characterised by the medium used for amplification or processing
    • 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
    • H04B10/2931—Signal power control using AGC
    • 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
    • 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
    • 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
    • H01S2301/04—Gain spectral shaping, flattening
    • 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
    • H01S3/10007—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers
    • H01S3/10015—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers by monitoring or controlling, e.g. attenuating, the input signal
    • 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
    • H01S3/10007—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers
    • H01S3/10023—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers by functional association of additional optical elements, e.g. filters, gratings, reflectors
    • H01S3/1003—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers by functional association of additional optical elements, e.g. filters, gratings, reflectors tunable optical elements, e.g. acousto-optic filters, tunable gratings
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2210/00—Indexing scheme relating to optical transmission systems
    • H04B2210/003—Devices including multiple stages, e.g., multi-stage optical amplifiers or dispersion compensators

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Optical Communication System (AREA)
  • Lasers (AREA)
DE1997637190 1996-05-02 1997-04-30 Verfahren zur Änderung der Anzahl Kanäle in einem optischen Kommunikationsnetzwerk Expired - Lifetime DE69737190T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP11144796 1996-05-02
JP11144796 1996-05-02

Publications (2)

Publication Number Publication Date
DE69737190D1 true DE69737190D1 (de) 2007-02-15
DE69737190T2 DE69737190T2 (de) 2007-11-08

Family

ID=14561441

Family Applications (4)

Application Number Title Priority Date Filing Date
DE1997637190 Expired - Lifetime DE69737190T2 (de) 1996-05-02 1997-04-30 Verfahren zur Änderung der Anzahl Kanäle in einem optischen Kommunikationsnetzwerk
DE1997637813 Expired - Lifetime DE69737813T2 (de) 1996-05-02 1997-04-30 Optisches Kommunikationssystem mit optischer Verstärkung
DE69739010T Expired - Lifetime DE69739010D1 (de) 1996-05-02 1997-04-30 Vorrichtung und Verfahren zur Verstärkung eines optischen Signals und optisches Übertragungssystem
DE1997637802 Expired - Lifetime DE69737802T2 (de) 1996-05-02 1997-04-30 Regler eines variablen optischen Dämpfers zur Regelung des Leistungsniveaus eines optischen Wellenmultiplexsignales falls die Zahl der Kanäle variiert

Family Applications After (3)

Application Number Title Priority Date Filing Date
DE1997637813 Expired - Lifetime DE69737813T2 (de) 1996-05-02 1997-04-30 Optisches Kommunikationssystem mit optischer Verstärkung
DE69739010T Expired - Lifetime DE69739010D1 (de) 1996-05-02 1997-04-30 Vorrichtung und Verfahren zur Verstärkung eines optischen Signals und optisches Übertragungssystem
DE1997637802 Expired - Lifetime DE69737802T2 (de) 1996-05-02 1997-04-30 Regler eines variablen optischen Dämpfers zur Regelung des Leistungsniveaus eines optischen Wellenmultiplexsignales falls die Zahl der Kanäle variiert

Country Status (6)

Country Link
US (14) US6025947A (de)
EP (6) EP1578047B1 (de)
JP (1) JP2000196534A (de)
KR (5) KR100289013B1 (de)
CN (5) CN100477572C (de)
DE (4) DE69737190T2 (de)

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* Cited by examiner, † Cited by third party
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EP0902565A3 (de) 1999-09-29
US6198572B1 (en) 2001-03-06
KR100326635B1 (ko) 2002-03-02
KR970075964A (ko) 1997-12-10
KR100326418B1 (ko) 2002-02-28
CN1406018A (zh) 2003-03-26
KR100289013B1 (ko) 2001-05-02
US8553319B2 (en) 2013-10-08
EP0805571B1 (de) 2007-06-13
EP0902566A3 (de) 1999-09-29
US20140043675A1 (en) 2014-02-13
DE69737813D1 (de) 2007-07-26
CN1167269A (zh) 1997-12-10
US20040036958A1 (en) 2004-02-26
EP1578047A1 (de) 2005-09-21
DE69739010D1 (de) 2008-11-06
US20020067538A1 (en) 2002-06-06
CN1406016A (zh) 2003-03-26
US5966237A (en) 1999-10-12
US7227681B2 (en) 2007-06-05
EP0902566B1 (de) 2007-01-03
EP0902566B9 (de) 2007-06-13
US6157481A (en) 2000-12-05
US6646791B2 (en) 2003-11-11
US20010017729A1 (en) 2001-08-30
CN100477573C (zh) 2009-04-08
KR100326417B1 (ko) 2002-02-28
DE69737802T2 (de) 2008-03-06
EP0805571A3 (de) 1999-09-29
CN1121626C (zh) 2003-09-17
DE69737813T2 (de) 2008-03-06
EP0902565B1 (de) 2007-06-13
CN100477572C (zh) 2009-04-08
US5995274A (en) 1999-11-30
US20070201876A1 (en) 2007-08-30
EP2296303B1 (de) 2013-11-20
EP0902565A2 (de) 1999-03-17
US7477447B2 (en) 2009-01-13
EP0902567A3 (de) 1999-09-22
EP0902566A2 (de) 1999-03-17
US9007680B2 (en) 2015-04-14
US6865016B2 (en) 2005-03-08
EP1578047B1 (de) 2008-09-24
DE69737802D1 (de) 2007-07-26
JP2000196534A (ja) 2000-07-14
DE69737190T2 (de) 2007-11-08
CN100477563C (zh) 2009-04-08
EP0805571A2 (de) 1997-11-05
US20110205620A1 (en) 2011-08-25
CN100477571C (zh) 2009-04-08
US7969649B2 (en) 2011-06-28
US20090086310A1 (en) 2009-04-02
CN1406017A (zh) 2003-03-26
US6025947A (en) 2000-02-15
EP2296303A1 (de) 2011-03-16
EP0902567A2 (de) 1999-03-17
US6144485A (en) 2000-11-07
KR100326419B1 (ko) 2002-02-28
US6377395B2 (en) 2002-04-23
CN1406019A (zh) 2003-03-26
US20050046927A1 (en) 2005-03-03

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