NO952929L - Forsterket telekommunikasjonssystem for bölgelengdedelt multipleksoverföring, og som har utjevnet mottakningseffekt - Google Patents

Forsterket telekommunikasjonssystem for bölgelengdedelt multipleksoverföring, og som har utjevnet mottakningseffekt

Info

Publication number
NO952929L
NO952929L NO952929A NO952929A NO952929L NO 952929 L NO952929 L NO 952929L NO 952929 A NO952929 A NO 952929A NO 952929 A NO952929 A NO 952929A NO 952929 L NO952929 L NO 952929L
Authority
NO
Norway
Prior art keywords
signals
optical
telecommunication system
station
reinforced
Prior art date
Application number
NO952929A
Other languages
English (en)
Other versions
NO952929D0 (no
Inventor
Fausto Meli
Stefano Piciaccia
Original Assignee
Pirelli Cavi Spa
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 Pirelli Cavi Spa filed Critical Pirelli Cavi Spa
Publication of NO952929D0 publication Critical patent/NO952929D0/no
Publication of NO952929L publication Critical patent/NO952929L/no

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
    • 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
    • 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
    • H04J14/02212—Power control, e.g. to keep the total optical power constant by addition of a dummy signal
    • 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
    • H04J14/02216—Power control, e.g. to keep the total optical power constant by gain equalization
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/03—WDM arrangements
    • H04J14/0305—WDM arrangements in end terminals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optical Communication System (AREA)
  • Lasers (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Locating Faults (AREA)
  • Transmitters (AREA)
  • Small-Scale Networks (AREA)

Abstract

Et optisk telekommunikasjonssystem omfattende en sendestasjon (1) og en mottakingsstasjon (8) for optiske signa- ler, hvilke stasjoner er forbundet med hverandre ved hjelp av en fiberoptisk ledning (6a-6e) som inneholder optiske ledningsforsterkere (7a-7d) med en aktiv fiber som er dopet med sjeldent jord- artmateriale og som er koplet i serie, hvor sendestasjonen (1) omfatter en genereringsanordning for generering av signaler på flere forutbestemte bølge- lengder, og en transportanordning for transport av signalene til en eneste fiberoptisk ledning, og stasjonen (8) for mottaking av optiske signaler omfat- i l ter en separasjonsanordning (10) for i 1 separering av signalene, idet minst en av de optiske ledningsforsterkere (7a- 7d) har dopingsmidler, en fiberlengde og en pumpeeffekt som på mottakingssta- sjonens (8) inngang er i stand til å bestemme et optisk signal/støy-forhold som mellom de forskjellige bølgelengder har en differanse som er mindre enn 2 dB, og for hvert signal er større enn 15 dB.
NO952929A 1994-07-25 1995-07-24 Forsterket telekommunikasjonssystem for bölgelengdedelt multipleksoverföring, og som har utjevnet mottakningseffekt NO952929L (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI941573A IT1273676B (it) 1994-07-25 1994-07-25 Sistema di telecomunicazione amplificata a multiplazione a divisione di lunghezza d'onda,con potenza di ricezione equalizzata

Publications (2)

Publication Number Publication Date
NO952929D0 NO952929D0 (no) 1995-07-24
NO952929L true NO952929L (no) 1996-01-26

Family

ID=11369353

Family Applications (1)

Application Number Title Priority Date Filing Date
NO952929A NO952929L (no) 1994-07-25 1995-07-24 Forsterket telekommunikasjonssystem for bölgelengdedelt multipleksoverföring, og som har utjevnet mottakningseffekt

Country Status (21)

Country Link
US (2) US5852510A (no)
EP (1) EP0695049B1 (no)
JP (1) JPH08195721A (no)
KR (1) KR960006371A (no)
CN (1) CN1117679A (no)
AT (1) ATE255302T1 (no)
AU (1) AU710198B2 (no)
BR (1) BR9502403A (no)
CA (1) CA2154641C (no)
CZ (1) CZ192295A3 (no)
DE (1) DE69532178T2 (no)
FI (1) FI953544A (no)
HU (1) HU218631B (no)
IT (1) IT1273676B (no)
NO (1) NO952929L (no)
NZ (1) NZ272564A (no)
PE (1) PE16097A1 (no)
PL (1) PL178061B1 (no)
RU (1) RU2159509C2 (no)
SK (1) SK93895A3 (no)
TW (1) TW270265B (no)

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JPH10164020A (ja) * 1996-11-29 1998-06-19 Nec Corp 光波長多重中継伝送システムおよびその光ｓ／ｎ比等化方法
US6914717B1 (en) 1996-12-23 2005-07-05 Xtera Communications, Inc. Multiple wavelength pumping of raman amplifier stages
US6052393A (en) 1996-12-23 2000-04-18 The Regents Of The University Of Michigan Broadband Sagnac Raman amplifiers and cascade lasers
JPH10276172A (ja) * 1997-03-28 1998-10-13 Kokusai Denshin Denwa Co Ltd <Kdd> 波長分割光処理装置およびこの波長分割光処理装置を用いた光通信伝送路
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CA2299441A1 (en) 1997-08-01 1999-02-11 Gianpaolo Barozzi Multi-band amplification system for dense wavelength division multiplexing
JPH11112068A (ja) * 1997-10-06 1999-04-23 Fujitsu Ltd 光信号伝送システム及び光信号伝送方法
JP3638777B2 (ja) 1998-02-04 2005-04-13 富士通株式会社 利得等化のための方法並びに該方法の実施に使用する装置及びシステム
US6597493B2 (en) 2000-05-05 2003-07-22 The Regents Of The University Of Michigan Nonlinear fiber amplifiers used for a 1430-1530nm low-loss window in optical fibers
US6574037B2 (en) 1998-06-16 2003-06-03 Xtera Communications, Inc. All band amplifier
US6321016B1 (en) * 1998-06-19 2001-11-20 Pirelli Cavi E Sistemi S.P.A. Optical fiber having low non-linearity for WDM transmission
US6545799B1 (en) 1998-09-02 2003-04-08 Corning Incorporated Method and apparatus for optical system link control
US6606178B1 (en) 1999-09-23 2003-08-12 Corning Incorporated Method and system to reduce FWM penalty in NRZ WDM systems
US6421167B1 (en) 2000-03-03 2002-07-16 General Dynamics Advanced Technology Systems, Inc. Multiple function bandwidth management systems
US6381063B1 (en) * 2000-03-16 2002-04-30 Corning Incorporated Long band optical amplifier
US6437906B1 (en) 2000-11-22 2002-08-20 Cisco Technology, Inc. All-optical gain controlled L-band EDFA structure with reduced four-wave mixing cross-talk
US6961522B1 (en) 2000-11-22 2005-11-01 Cisco Technology, Inc. Automatic raman gain and tilt control for ultra-long-distance dense WDM optical communication system
US6810214B2 (en) 2001-03-16 2004-10-26 Xtera Communications, Inc. Method and system for reducing degradation of optical signal to noise ratio
US6532101B2 (en) 2001-03-16 2003-03-11 Xtera Communications, Inc. System and method for wide band Raman amplification
US6941079B1 (en) 2001-05-24 2005-09-06 Cisco Technology, Inc. Optical demultiplexer with multi-channel power control and tilt compensation
US6697193B1 (en) 2001-06-06 2004-02-24 Cisco Technology, Inc. Shared variable gain amplifier for WDM channel equalization
US6587259B2 (en) 2001-07-27 2003-07-01 Xtera Communications, Inc. System and method for controlling noise figure
US6757099B2 (en) 2001-08-15 2004-06-29 Pts Corporation Optical power transient control scheme for EDFA amplifiers
US6594071B1 (en) 2001-10-02 2003-07-15 Xtera Communications, Inc. Method and apparatus for amplifier control
US20030067670A1 (en) * 2001-10-04 2003-04-10 Lacra Pavel Dynamic optical spectral control scheme for optical amplifier sites
CN1330119C (zh) * 2001-11-11 2007-08-01 华为技术有限公司 一种用于高速传输系统的光信号调节方法及光传输系统
US6621626B1 (en) 2001-12-05 2003-09-16 Cisco Technology, Inc. Modular optical amplifier structure for highly dense interleaved WDM systems
US7233432B2 (en) * 2001-12-20 2007-06-19 Xtera Communications, Inc. Pre-emphasized optical communication
US6819479B1 (en) 2001-12-20 2004-11-16 Xtera Communications, Inc. Optical amplification using launched signal powers selected as a function of a noise figure
US7197245B1 (en) 2002-03-15 2007-03-27 Xtera Communications, Inc. System and method for managing system margin
US6819478B1 (en) 2002-03-15 2004-11-16 Xtera Communications, Inc. Fiber optic transmission system with low cost transmitter compensation
US6778321B1 (en) 2002-03-15 2004-08-17 Xtera Communications, Inc. Fiber optic transmission system for a metropolitan area network
US6825973B1 (en) 2002-03-15 2004-11-30 Xtera Communications, Inc. Reducing leading edge transients using co-propagating pumps
KR100458678B1 (ko) * 2002-03-20 2004-12-03 주식회사 럭스퍼트 이득제공 방식의 광파워 평탄화기
US7054059B1 (en) 2003-05-14 2006-05-30 Cisco Technoloy, Inc. Lumped Raman amplification structure for very wideband applications
EP2475121A1 (en) * 2011-01-10 2012-07-11 Ntt Docomo, Inc. Communication system and method for directly transmitting signals between nodes of a communication system
CN104683036B (zh) * 2015-03-23 2017-07-28 东南大学 一种多源激光二元相位调制与解调装置及方法
MX2018007113A (es) * 2015-12-11 2019-01-30 Huawei Tech Co Ltd Método y aparato para controlar potencia de transmisión de unidad de red óptica y la unidad de red óptica.
WO2020255362A1 (ja) * 2019-06-21 2020-12-24 日本電信電話株式会社 光アンプ、受信機、光伝送システム及び光アンプ設計方法

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Also Published As

Publication number Publication date
US6025954A (en) 2000-02-15
EP0695049A1 (en) 1996-01-31
EP0695049B1 (en) 2003-11-26
CA2154641C (en) 2005-03-15
CN1117679A (zh) 1996-02-28
PE16097A1 (es) 1997-05-12
PL309766A1 (en) 1996-02-05
TW270265B (no) 1996-02-11
AU2718495A (en) 1996-02-08
ITMI941573A1 (it) 1996-01-25
ATE255302T1 (de) 2003-12-15
PL178061B1 (pl) 2000-02-29
NO952929D0 (no) 1995-07-24
IT1273676B (it) 1997-07-09
DE69532178D1 (de) 2004-01-08
CA2154641A1 (en) 1996-01-26
JPH08195721A (ja) 1996-07-30
SK93895A3 (en) 1996-02-07
KR960006371A (ko) 1996-02-23
NZ272564A (en) 1998-06-26
CZ192295A3 (en) 1996-02-14
AU710198B2 (en) 1999-09-16
RU2159509C2 (ru) 2000-11-20
FI953544A (fi) 1996-01-26
HUT72807A (en) 1996-05-28
DE69532178T2 (de) 2004-08-12
BR9502403A (pt) 1996-06-25
US5852510A (en) 1998-12-22
ITMI941573A0 (it) 1994-07-25
HU9502215D0 (en) 1995-09-28
HU218631B (hu) 2000-10-28
FI953544A0 (fi) 1995-07-24

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FC2A Withdrawal, rejection or dismissal of laid open patent application