IT1248821B - Linea di telecomunicazione a fibre ottiche con amplificatori ottici a fibra attiva con ridotte riflessioni - Google Patents

Linea di telecomunicazione a fibre ottiche con amplificatori ottici a fibra attiva con ridotte riflessioni

Info

Publication number
IT1248821B
IT1248821B IT02043490A IT2043490A IT1248821B IT 1248821 B IT1248821 B IT 1248821B IT 02043490 A IT02043490 A IT 02043490A IT 2043490 A IT2043490 A IT 2043490A IT 1248821 B IT1248821 B IT 1248821B
Authority
IT
Italy
Prior art keywords
optical amplifiers
telecommunication line
fiber optic
optic telecommunication
reduced reflections
Prior art date
Application number
IT02043490A
Other languages
English (en)
Other versions
IT9020434A0 (it
IT9020434A1 (it
Inventor
Giorgio Grasso
Aldo Righetti
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 IT9020434A0 publication Critical patent/IT9020434A0/it
Priority to IT02043490A priority Critical patent/IT1248821B/it
Priority to MYPI91000791A priority patent/MY106157A/en
Priority to US07/699,920 priority patent/US5210808A/en
Priority to HU617/91A priority patent/HU217495B/hu
Priority to AU77038/91A priority patent/AU644869B2/en
Priority to NZ238157A priority patent/NZ238157A/xx
Priority to TW080103915A priority patent/TW218039B/zh
Priority to EP91108162A priority patent/EP0458256A1/en
Priority to PE1991185944A priority patent/PE26891A1/es
Priority to CA 2042987 priority patent/CA2042987C/en
Priority to SK1525-91A priority patent/SK278796B6/sk
Priority to CS911525A priority patent/CZ280817B6/cs
Priority to PT97751A priority patent/PT97751B/pt
Priority to PL91290378A priority patent/PL168016B1/pl
Priority to SU4895509A priority patent/RU2105419C1/ru
Priority to IE178191A priority patent/IE911781A1/en
Priority to FI912525A priority patent/FI912525A/fi
Priority to CN91103424A priority patent/CN1032029C/zh
Priority to BR919102259A priority patent/BR9102259A/pt
Priority to NO91912000A priority patent/NO912000L/no
Priority to KR1019910008543A priority patent/KR100192229B1/ko
Priority to JP3121165A priority patent/JPH07107041A/ja
Publication of IT9020434A1 publication Critical patent/IT9020434A1/it
Application granted granted Critical
Publication of IT1248821B publication Critical patent/IT1248821B/it

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/04—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only
    • H03F3/08—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only controlled by light
    • 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
    • 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
    • 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
    • H01S2301/00—Functional characteristics
    • H01S2301/02—ASE (amplified spontaneous emission), noise; Reduction thereof
IT02043490A 1989-07-17 1990-05-25 Linea di telecomunicazione a fibre ottiche con amplificatori ottici a fibra attiva con ridotte riflessioni IT1248821B (it)

Priority Applications (22)

Application Number Priority Date Filing Date Title
IT02043490A IT1248821B (it) 1990-05-25 1990-05-25 Linea di telecomunicazione a fibre ottiche con amplificatori ottici a fibra attiva con ridotte riflessioni
MYPI91000791A MY106157A (en) 1990-05-25 1991-05-10 Unit for amplifying signals of light in optical fiber transmission lines.
US07/699,920 US5210808A (en) 1989-07-17 1991-05-14 Unit for amplifying light signals in optical fiber transmission lines
HU617/91A HU217495B (hu) 1990-05-25 1991-05-14 Fényvezetős telekommunikációs vonal és optikai erősítő
AU77038/91A AU644869B2 (en) 1990-05-25 1991-05-14 Unit for amplifying signals of light in optical fiber transmission lines
NZ238157A NZ238157A (en) 1990-05-25 1991-05-15 Active fibre optical amplifier in transmission line with reflection limiting
TW080103915A TW218039B (it) 1990-05-25 1991-05-21
EP91108162A EP0458256A1 (en) 1990-05-25 1991-05-21 Unit for amplifying signals of light in optical fiber transmission lines
PE1991185944A PE26891A1 (es) 1990-05-25 1991-05-21 Unidad para amplificar senales de luz en lineas de transmision con fibra optica
CA 2042987 CA2042987C (en) 1990-05-25 1991-05-21 Unit for amplifying light signals in optical fiber transmission lines
SK1525-91A SK278796B6 (sk) 1990-05-25 1991-05-22 Zariadenie na zosilňovanie svetelných signálov v p
CS911525A CZ280817B6 (cs) 1990-05-25 1991-05-22 Telekomunikační linka s optickým vláknem
PT97751A PT97751B (pt) 1990-05-25 1991-05-23 Linhas de telecomunicacao de fibra optica compreendendo amplificadores opticos
PL91290378A PL168016B1 (pl) 1990-05-25 1991-05-23 Lacze swiatlowodowe ze wzmacniaczem optycznym z wlóknem aktywnym1. Lacze swiatlowodowe ze wzmacniaczem opty-cznym z wlóknem aktywnym, w którym nadajnik tran s-m itowanego sygnalu sw ietlnego je s t polaczony zodbiornikiem sygnalu przez linie swiatlowodowa dale-kiego zasiegu, podzielona n a odcinki, z których kazdyzakonczony jest liniowym wzmacniaczem optycznym z wlóknem aktywnym, wyposazonym w laserowe zródlo pompujace, przy czym lacze to zawiera przynajmniej jeden izolator optyczny jednokierunkowo przenoszacy sygnal swietlny od nadajnika do odbiornika sygnalu, a nadajnik sygnalu zawiera wzmacniacz optyczny mocy z wlóknem aktywnym, znam ienne tym , ze wejsciowy odcinek linii swiatlowodowej (3) dolaczony jest do kon- PL PL PL
CN91103424A CN1032029C (zh) 1990-05-25 1991-05-24 光纤传输线路中放大光的信号元件
IE178191A IE911781A1 (en) 1990-05-25 1991-05-24 Unit for amplifying signals of light in optical fiber¹transmission lines
FI912525A FI912525A (fi) 1990-05-25 1991-05-24 Enhet foer foerstaerkning av ljussignaler i optiska fibertransmissionslinjer.
SU4895509A RU2105419C1 (ru) 1990-05-25 1991-05-24 Оптическая волоконная телекоммуникационная линия и оптический усилитель для нее
BR919102259A BR9102259A (pt) 1990-05-25 1991-05-24 Unidade para a amplificacao de sinais luminosos em linhas de transmissao por fibras oticas
NO91912000A NO912000L (no) 1990-05-25 1991-05-24 Enhet for forsterkning av lyssignaler i fiberoptiske overfoeringsledninger
KR1019910008543A KR100192229B1 (ko) 1990-05-25 1991-05-25 광섬유 전송 회선에서 광신호를 증폭하는 장치
JP3121165A JPH07107041A (ja) 1990-05-25 1991-05-27 オプチカルファイバー伝送線の光の信号を増幅するための装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT02043490A IT1248821B (it) 1990-05-25 1990-05-25 Linea di telecomunicazione a fibre ottiche con amplificatori ottici a fibra attiva con ridotte riflessioni

Publications (3)

Publication Number Publication Date
IT9020434A0 IT9020434A0 (it) 1990-05-25
IT9020434A1 IT9020434A1 (it) 1991-11-25
IT1248821B true IT1248821B (it) 1995-01-30

Family

ID=11166891

Family Applications (1)

Application Number Title Priority Date Filing Date
IT02043490A IT1248821B (it) 1989-07-17 1990-05-25 Linea di telecomunicazione a fibre ottiche con amplificatori ottici a fibra attiva con ridotte riflessioni

Country Status (20)

Country Link
EP (1) EP0458256A1 (it)
JP (1) JPH07107041A (it)
KR (1) KR100192229B1 (it)
CN (1) CN1032029C (it)
AU (1) AU644869B2 (it)
BR (1) BR9102259A (it)
CZ (1) CZ280817B6 (it)
FI (1) FI912525A (it)
HU (1) HU217495B (it)
IE (1) IE911781A1 (it)
IT (1) IT1248821B (it)
MY (1) MY106157A (it)
NO (1) NO912000L (it)
NZ (1) NZ238157A (it)
PE (1) PE26891A1 (it)
PL (1) PL168016B1 (it)
PT (1) PT97751B (it)
RU (1) RU2105419C1 (it)
SK (1) SK278796B6 (it)
TW (1) TW218039B (it)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4222208A1 (de) * 1992-07-07 1994-01-13 Sel Alcatel Ag Optisches Nachrichtenübertragungssystem mit optischem Filter zum Schutz vor Riesenimpulsen
EP1841022A3 (en) 1995-03-20 2009-12-02 Fujitsu Limited Apparatus and method for processing an optical signal
WO2001005070A1 (fr) * 1999-07-08 2001-01-18 Alcatel Utilisation d'isolateurs pour surmonter les limitations à l'amplification raman provenant de la diffusion rayleigh
CN110702239B (zh) * 2019-10-28 2020-12-18 电子科技大学 一种无限散射单光子探测光时域反射测量方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2220789B (en) * 1988-07-15 1992-08-26 Stc Plc Low coherence optical source

Also Published As

Publication number Publication date
RU2105419C1 (ru) 1998-02-20
SK278796B6 (sk) 1998-03-04
FI912525A (fi) 1991-11-26
CS152591A3 (en) 1992-02-19
KR100192229B1 (ko) 1999-06-15
IT9020434A0 (it) 1990-05-25
AU7703891A (en) 1991-11-28
BR9102259A (pt) 1992-01-14
HU217495B (hu) 2000-02-28
FI912525A0 (fi) 1991-05-24
PL168016B1 (pl) 1995-12-30
PT97751A (pt) 1993-06-30
NZ238157A (en) 1993-07-27
NO912000L (no) 1991-11-26
IT9020434A1 (it) 1991-11-25
PE26891A1 (es) 1991-09-09
CN1032029C (zh) 1996-06-12
MY106157A (en) 1995-03-31
NO912000D0 (no) 1991-05-24
KR910021006A (ko) 1991-12-20
TW218039B (it) 1993-12-21
IE911781A1 (en) 1991-12-04
PL290378A1 (en) 1992-01-13
JPH07107041A (ja) 1995-04-21
PT97751B (pt) 1998-12-31
EP0458256A1 (en) 1991-11-27
CN1057721A (zh) 1992-01-08
HU911617D0 (en) 1991-11-28
CZ280817B6 (cs) 1996-04-17
HUT60579A (en) 1992-09-28
AU644869B2 (en) 1993-12-23

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Legal Events

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0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970528