BR9501362A - Sistema de telecomunicação amplificada de multiplexação de divisão de comprimento de onda - Google Patents

Sistema de telecomunicação amplificada de multiplexação de divisão de comprimento de onda

Info

Publication number
BR9501362A
BR9501362A BR9501362A BR9501362A BR9501362A BR 9501362 A BR9501362 A BR 9501362A BR 9501362 A BR9501362 A BR 9501362A BR 9501362 A BR9501362 A BR 9501362A BR 9501362 A BR9501362 A BR 9501362A
Authority
BR
Brazil
Prior art keywords
division multiplexing
telecommunication system
wavelength division
amplified telecommunication
multiplexing amplified
Prior art date
Application number
BR9501362A
Other languages
English (en)
Inventor
Fausto Meli
Giacomo Stefano Roba
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 BR9501362A publication Critical patent/BR9501362A/pt

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
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2581—Multimode transmission
    • 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
    • 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
    • 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
    • H04B10/293—Signal power control
    • H04B10/2933—Signal power control considering the whole optical path
    • H04B10/2935—Signal power control considering the whole optical path with a cascade of amplifiers
    • 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
    • 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
    • H01S3/05—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
    • H01S3/06787—Bidirectional amplifier
    • 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
    • H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
    • H01S3/16—Solid materials
    • H01S3/1601—Solid materials characterised by an active (lasing) ion
    • H01S3/1603—Solid materials characterised by an active (lasing) ion rare earth
    • H01S3/1608—Solid materials characterised by an active (lasing) ion rare earth erbium
    • 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
    • H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
    • H01S3/16—Solid materials
    • H01S3/1691—Solid materials characterised by additives / sensitisers / promoters as further dopants
    • 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
    • H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
    • H01S3/16—Solid materials
    • H01S3/1691—Solid materials characterised by additives / sensitisers / promoters as further dopants
    • H01S3/1696—Solid materials characterised by additives / sensitisers / promoters as further dopants transition metal
    • 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)
  • Lasers (AREA)
  • Optical Communication System (AREA)
  • Transmitters (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Near-Field Transmission Systems (AREA)
BR9501362A 1994-04-14 1995-04-12 Sistema de telecomunicação amplificada de multiplexação de divisão de comprimento de onda BR9501362A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI940712A IT1270032B (it) 1994-04-14 1994-04-14 Sistema di telecomunicazione amplificata a multiplazione a divisione di lunghezza d'onda

Publications (1)

Publication Number Publication Date
BR9501362A true BR9501362A (pt) 1995-11-14

Family

ID=11368591

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9501362A BR9501362A (pt) 1994-04-14 1995-04-12 Sistema de telecomunicação amplificada de multiplexação de divisão de comprimento de onda

Country Status (22)

Country Link
US (2) US5748364A (pt)
EP (1) EP0677902B1 (pt)
JP (1) JPH0846592A (pt)
KR (1) KR950035162A (pt)
CN (1) CN1084098C (pt)
AT (1) ATE220482T1 (pt)
AU (1) AU691570B2 (pt)
BR (1) BR9501362A (pt)
CA (1) CA2147035C (pt)
CZ (1) CZ93995A3 (pt)
DE (1) DE69527325T2 (pt)
FI (1) FI951813A (pt)
HU (1) HU216228B (pt)
IT (1) IT1270032B (pt)
MY (1) MY130572A (pt)
NO (1) NO951446L (pt)
NZ (1) NZ270854A (pt)
PE (1) PE26096A1 (pt)
PL (2) PL177262B1 (pt)
RU (1) RU2146853C1 (pt)
SK (1) SK49795A3 (pt)
TW (1) TW301087B (pt)

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE504278C2 (sv) * 1995-02-22 1996-12-23 Telia Ab Dämpningsfri optisk förbindelse
GB9522943D0 (en) * 1995-08-05 1996-01-10 Samsung Electronics Co Ltd Erbium doped fiber amplifier
US5631758A (en) * 1995-10-26 1997-05-20 Lucent Technologies Inc. Chirped-pulse multiple wavelength telecommunications system
US6025947A (en) * 1996-05-02 2000-02-15 Fujitsu Limited Controller which controls a variable optical attenuator to control the power level of a wavelength-multiplexed optical signal when the number of channels are varied
IT1283373B1 (it) 1996-07-31 1998-04-17 Pirelli Cavi S P A Ora Pirelli Sistema di telecomunicazione ottica multicanale bidirezionale
IT1283372B1 (it) 1996-07-31 1998-04-17 Pirelli Cavi S P A Ora Pirelli Dispositivo per l'inserimento e l'estrazione di segnali ottici
JP3652804B2 (ja) * 1996-09-06 2005-05-25 富士通株式会社 光伝送装置
JPH10163554A (ja) * 1996-11-27 1998-06-19 Furukawa Electric Co Ltd:The 光ファイバ増幅装置
US6295149B1 (en) 1997-01-15 2001-09-25 Pirelli Cavi E Sistemi S.P.A. System and method of telecommunication with wavelength division multiplexing comprising a demultiplexer
US5890816A (en) * 1997-03-07 1999-04-06 Lucent Technologies Inc. Polarization maintaining optical amplifier
EP0883217B1 (en) * 1997-06-06 2003-10-29 Corning Photonic Technologies Inc. Optical fiber telecommunication system
US6191854B1 (en) 1997-06-23 2001-02-20 Pirelli Cavi E Sistemi S.P.A. Optical telecommunications system
US5892781A (en) * 1997-09-02 1999-04-06 E-Tek Dynamics, Inc. High output fiber amplifier/lasers for fiberoptic networks
KR100251557B1 (ko) * 1997-10-02 2000-05-01 윤종용 광섬유 증폭기
US5930029A (en) * 1997-12-02 1999-07-27 Sdl, Inc. Optical fiber amplifier with optimized power conversion
CN1081414C (zh) * 1997-12-05 2002-03-20 清华大学 实现波分复用系统动态增益谱均衡的方法及其均衡放大器
KR100280968B1 (ko) 1997-12-10 2001-02-01 윤종용 동기화된에탈론필터를이용한광섬유증폭기
US6160660A (en) * 1997-12-31 2000-12-12 Pirelli Cavi E Sistemi S.P.A. Bidirectional optical transmission system for dense interleaved wavelength division multiplexing
JP3829962B2 (ja) * 1998-01-22 2006-10-04 富士通株式会社 光アッテネータ並びに該光アッテネータを備えたシステム、光増幅器及び端局装置
EP0975103B1 (en) * 1998-02-06 2006-08-09 Fujitsu Limited Optical amplifier and method for controlling an excitation light source in an optical amplifier
AU3858900A (en) * 1999-02-16 2000-09-04 Tyco Submarine Systems Ltd. Method and apparatus for providing optical amplification and gain equalization to an optical signal in an optical communication system
KR100319748B1 (ko) * 1999-12-09 2002-01-09 오길록 출력 등화된 광대역 다채널 광섬유 레이저
DE60138935D1 (de) * 2000-02-23 2009-07-23 Fujitsu Ltd Optischer Verstärker
AU2000233234A1 (en) 2000-03-03 2001-09-12 Optical Technologies Italia S.P.A. Optical amplifier and optical transmission system
JP2002009376A (ja) * 2000-06-23 2002-01-11 Furukawa Electric Co Ltd:The 光増幅用光ファイバ
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
US6636666B2 (en) 2001-05-14 2003-10-21 University Of Iowa Research Foundation Optical power equalizer
US6697193B1 (en) 2001-06-06 2004-02-24 Cisco Technology, Inc. Shared variable gain amplifier for WDM channel equalization
US6621626B1 (en) 2001-12-05 2003-09-16 Cisco Technology, Inc. Modular optical amplifier structure for highly dense interleaved WDM systems
US7054059B1 (en) 2003-05-14 2006-05-30 Cisco Technoloy, Inc. Lumped Raman amplification structure for very wideband applications
CN1642042A (zh) 2004-01-15 2005-07-20 华为技术有限公司 光通信系统、子速率复用解复用装置及其方法
US7078323B2 (en) * 2004-09-29 2006-07-18 Sharp Laboratories Of America, Inc. Digital light valve semiconductor processing
US7286137B2 (en) * 2005-02-28 2007-10-23 Asml Holding N.V. Method and system for constrained pixel graytones interpolation for pattern rasterization
JP2009105080A (ja) * 2006-01-04 2009-05-14 Sumitomo Electric Ind Ltd 増幅用光ファイバ
RU2590889C2 (ru) * 2012-03-23 2016-07-10 Хуавэй Текнолоджиз Ко., Лтд. Способ и устройство для обнаружения отношения оптического сигнала к шуму, узловое устройство и сетевая система
RU2663179C2 (ru) * 2017-01-09 2018-08-02 Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный университет телекоммуникаций и информатики" (СибГУТИ) Способ измерения отношения оптического сигнала к шуму при четырехволновом смешении в волоконно-оптических системах передачи с частотным разделением сигналов
CN111829753A (zh) * 2020-06-01 2020-10-27 杭州奥创光子技术有限公司 一种光纤放大器工作状态的监测装置

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3731226A (en) * 1971-11-10 1973-05-01 American Optical Corp Laser using phosphate base laser glass
US4194807A (en) * 1976-04-09 1980-03-25 Georg Gliemeroth Optical fiber wave-guides for signal transmission comprising multiple component glass with an adjusted expansion co-efficient between the core and mantle
US4666247A (en) * 1985-02-08 1987-05-19 American Telephone And Telegraph Company, At&T Bell Laboratories Multiconstituent optical fiber
US5282079A (en) * 1988-06-10 1994-01-25 Pirelli General Plc Optical fibre amplifier
DE68910125T2 (de) * 1989-08-04 1994-02-10 Unilever Nv Oral-Präparate.
US5087108A (en) * 1989-08-11 1992-02-11 Societa' Cavi Pirelli S.P.A. Double-core active-fiber optical amplifier having a wide-band signal wavelength
IT1237136B (it) * 1989-10-30 1993-05-24 Pirelli Cavi Spa Amplificatore ottico a fibra attiva a larga banda di lunghezza d'onda di segnale.
WO1991011401A1 (fr) * 1990-02-05 1991-08-08 The Furukawa Electric Co., Ltd. Verres quartzeux dopes avec un element de terre rare et production d'un tel verre
IT1237970B (it) * 1990-02-07 1993-06-19 Pirelli Cavi Spa Amplificatore ottico a fibra attiva,con porzioni a doppio nucleo,a larga banda di lunghezza d'onda di segnale
GB9010943D0 (en) * 1990-05-16 1990-07-04 British Telecomm Wave-guiding structure with lasing properties
US5058976A (en) * 1990-08-03 1991-10-22 At&T Bell Laboratories System comprising Er-doped optical fiber
US5117303A (en) * 1990-08-23 1992-05-26 At&T Bell Laboratories Method of operating concatenated optical amplifiers
US5225922A (en) * 1991-11-21 1993-07-06 At&T Bell Laboratories Optical transmission system equalizer
US5378664A (en) * 1993-06-24 1995-01-03 At&T Corp. Optical fiber amplifier and a glass therefor
US5406404A (en) * 1993-11-02 1995-04-11 At&T Corp. Method of mitigating gain peaking using a chain of fiber amplifiers
US5563979A (en) * 1995-08-31 1996-10-08 Lucent Technologies Inc. Erbium-doped planar optical device

Also Published As

Publication number Publication date
CN1084098C (zh) 2002-05-01
AU691570B2 (en) 1998-05-21
HU9501071D0 (en) 1995-06-28
FI951813A0 (fi) 1995-04-13
HU216228B (hu) 1999-05-28
CZ93995A3 (en) 1996-06-12
NO951446D0 (no) 1995-04-12
CA2147035C (en) 2003-07-01
JPH0846592A (ja) 1996-02-16
CA2147035A1 (en) 1995-10-15
NZ270854A (en) 1998-05-27
ITMI940712A1 (it) 1995-10-14
ATE220482T1 (de) 2002-07-15
US5748364A (en) 1998-05-05
PE26096A1 (es) 1996-06-19
FI951813A (fi) 1995-10-15
EP0677902B1 (en) 2002-07-10
RU2146853C1 (ru) 2000-03-20
SK49795A3 (en) 1995-11-08
AU1620095A (en) 1995-10-26
NO951446L (no) 1995-10-16
KR950035162A (ko) 1995-12-30
MY130572A (en) 2007-06-29
PL177262B1 (pl) 1999-10-29
PL177566B1 (pl) 1999-12-31
DE69527325D1 (de) 2002-08-14
HUT73075A (en) 1996-06-28
TW301087B (pt) 1997-03-21
CN1113622A (zh) 1995-12-20
PL308104A1 (en) 1995-10-16
IT1270032B (it) 1997-04-28
EP0677902A1 (en) 1995-10-18
US5808787A (en) 1998-09-15
ITMI940712A0 (it) 1994-04-14
DE69527325T2 (de) 2003-01-02
RU95105451A (ru) 1997-01-27

Similar Documents

Publication Publication Date Title
BR9501362A (pt) Sistema de telecomunicação amplificada de multiplexação de divisão de comprimento de onda
HK1054135A1 (en) Optical transmission systems using optical amplifiers and wavelength division multiplexing
EP1439654A3 (en) Optical communication system and optical amplifier
BR9502403A (pt) Sistema de telecomunicaçao amplificada para transmissoes multiplexadas por divisao de comprimento de onda com potência de recepçao equalizada
EP1102114A4 (en) RAMA STRUCTURE SYSTEM AND OPTICAL SIGNAL TRANSMISSION USING THEREOF
SE9803348D0 (sv) WDM-channel equalizer
CA2243096A1 (en) System of controlling wavelength division multiplexed optical amplifier and method thereof
CA2377647A1 (en) Broadband wavelength-division multiplexer/demultiplexer
CA2325580C (en) Wdm transmission repeater, wdm transmission system and wdm transmission method
AU2002352406A1 (en) Noise reduction in optical communications networks
EP0910183A3 (en) Wavelength multiplexing transmission apparatus and wavelength demultiplexing reception apparatus
WO1998049794A3 (en) Low loss, optical add/drop wdm node
EP0314508A3 (en) Optical communications apparatus
CA2060287A1 (en) Optical amplifier
EP1126638A3 (en) Optical wavelength division multiplexing transmission system
EP1148361A3 (en) Light-branching apparatus for an optical communications system
KR20000074542A (ko) 단일방향 광증폭기를 이용한 양방향 광증폭기
CA2066548A1 (fr) Systeme de telecommunications a amplificateurs optiques a fibre pour la transmission de signaux a longues distances
BR9902241A (pt) Sistema de telecomunicações ótico, analisador de canal para sinais de transmissão multiplexados por divisão do comprimento de onda, processos para filtragem de um sinal ótico em uma banda de onda e para monitorização de canais para sinais de transmissão multiplexados por divisão do comprimento de onda, e, amplificador ótico com controle de ganho
TH10721EX (th) ตัวขยายเชิงแสงไฟเบอร์แอกทีฟแบบแกนคู่ที่มีความยาวคลื่นสัญญาณแถบกว้าง
WO2001063705A8 (en) Edfl multiple wavelength laser source
KR20010026029A (ko) 양방향 광증폭기
TH23653A (th) ระบบโทรคมนาคมแบบผ่านการขยายแล้วสำหรับการส่งผ่านแบบมัลติเพลกซ์ชนิดแบ่งความยาวคลื่น

Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]
B15K Others concerning applications: alteration of classification

Ipc: H04B 10/291 (2013.01), H01S 3/067 (2006.0