FI912525L - Enhet foer foerstaerkning av ljussignaler i optiska fibertransmissionslinjer. - Google Patents

Enhet foer foerstaerkning av ljussignaler i optiska fibertransmissionslinjer. Download PDF

Info

Publication number
FI912525L
FI912525L FI912525A FI912525A FI912525L FI 912525 L FI912525 L FI 912525L FI 912525 A FI912525 A FI 912525A FI 912525 A FI912525 A FI 912525A FI 912525 L FI912525 L FI 912525L
Authority
FI
Finland
Prior art keywords
optiska
ljussignaler
fibertransmissionslinjer
enhet
foerstaerkning
Prior art date
Application number
FI912525A
Other languages
English (en)
Finnish (fi)
Other versions
FI912525A7 (fi
FI912525A0 (fi
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 FI912525A0 publication Critical patent/FI912525A0/fi
Publication of FI912525A7 publication Critical patent/FI912525A7/fi
Publication of FI912525L publication Critical patent/FI912525L/fi

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
    • 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Power Engineering (AREA)
  • Lasers (AREA)
  • Optical Communication System (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Optical Transform (AREA)
FI912525A 1990-05-25 1991-05-24 Enhet foer foerstaerkning av ljussignaler i optiska fibertransmissionslinjer. FI912525L (fi)

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
FI912525A0 FI912525A0 (fi) 1991-05-24
FI912525A7 FI912525A7 (fi) 1991-11-26
FI912525L true FI912525L (fi) 1991-11-26

Family

ID=11166891

Family Applications (1)

Application Number Title Priority Date Filing Date
FI912525A FI912525L (fi) 1990-05-25 1991-05-24 Enhet foer foerstaerkning av ljussignaler i optiska fibertransmissionslinjer.

Country Status (20)

Country Link
EP (1) EP0458256A1 (cs)
JP (1) JPH07107041A (cs)
KR (1) KR100192229B1 (cs)
CN (1) CN1032029C (cs)
AU (1) AU644869B2 (cs)
BR (1) BR9102259A (cs)
CZ (1) CZ280817B6 (cs)
FI (1) FI912525L (cs)
HU (1) HU217495B (cs)
IE (1) IE911781A1 (cs)
IT (1) IT1248821B (cs)
MY (1) MY106157A (cs)
NO (1) NO912000L (cs)
NZ (1) NZ238157A (cs)
PE (1) PE26891A1 (cs)
PL (1) PL168016B1 (cs)
PT (1) PT97751B (cs)
RU (1) RU2105419C1 (cs)
SK (1) SK278796B6 (cs)
TW (1) TW218039B (cs)

Families Citing this family (5)

* 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
EP0734105B1 (en) * 1995-03-20 2004-09-29 Fujitsu Limited Optical fiber amplifier and dispersion compensating fiber module for optical fiber amplifier
JP4574920B2 (ja) * 1999-07-08 2010-11-04 アルカテル−ルーセント レーリー散乱によって生じるラマン増幅の制限を越えるためのアイソレータの使用
RU2249838C2 (ru) * 2002-04-08 2005-04-10 Открытое акционерное общество Пермская научно-производственная приборостроительная компания Способ изготовления устройства устранения обратноотраженного луча для волоконно-оптического гироскопа
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 (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4546476A (en) * 1982-12-10 1985-10-08 The Board Of Trustees Of The Leland Stanford Junior University Fiber optic amplifier
GB2220789B (en) * 1988-07-15 1992-08-26 Stc Plc Low coherence optical source

Also Published As

Publication number Publication date
TW218039B (cs) 1993-12-21
EP0458256A1 (en) 1991-11-27
IT9020434A0 (cs) 1990-05-25
BR9102259A (pt) 1992-01-14
AU7703891A (en) 1991-11-28
JPH07107041A (ja) 1995-04-21
SK278796B6 (sk) 1998-03-04
NO912000L (no) 1991-11-26
PL168016B1 (pl) 1995-12-30
NZ238157A (en) 1993-07-27
FI912525A7 (fi) 1991-11-26
PL290378A1 (en) 1992-01-13
RU2105419C1 (ru) 1998-02-20
HU911617D0 (en) 1991-11-28
CN1057721A (zh) 1992-01-08
CS152591A3 (en) 1992-02-19
HUT60579A (en) 1992-09-28
FI912525A0 (fi) 1991-05-24
CN1032029C (zh) 1996-06-12
PT97751A (pt) 1993-06-30
IE911781A1 (en) 1991-12-04
KR100192229B1 (ko) 1999-06-15
PE26891A1 (es) 1991-09-09
IT1248821B (it) 1995-01-30
CZ280817B6 (cs) 1996-04-17
PT97751B (pt) 1998-12-31
HU217495B (hu) 2000-02-28
KR910021006A (ko) 1991-12-20
NO912000D0 (no) 1991-05-24
MY106157A (en) 1995-03-31
IT9020434A1 (it) 1991-11-25
AU644869B2 (en) 1993-12-23

Similar Documents

Publication Publication Date Title
FI914165A7 (fi) Kompensering av likspaenningsoffset i en radiomottagare.
FI914457L (fi) Foerfarande foer kontroll av kvaeve- oxidemissioner i foerbraenningsmotor.
FI913029L (fi) Foerfarande foer maetning av jaernhalten i zinkskikt.
FI914406A7 (fi) Foerfarande foer koncentrering av tunnsyra i en trestegs vacuumtvaongsomloppsfoeraongningsanlaeggning.
FI913890A7 (fi) Foerfarande foer samtidig tillverkning av tvao dekorationslaminatskivor i en enplanspress.
FI911882L (fi) Foerfarande foer framstaellning av fraemmande proteiner i streptomyceter.
FI910856A7 (fi) Foerfarande foer reglering av stroemriktningar i en pappersmaskins inloppslaoda.
FI905896A0 (fi) Formningsgapsarrangemang i en dubbelviraformare av en pappersmaskin.
FI905959A7 (fi) Blaosnings- och konditioneringsanordning foer en omsvaengd cylindergrupp i torkningspartiet av en pappersmaskin.
FI900688L (fi) Anordning foer luftning av liggunderlag i sjuksaeng.
FI902624A7 (fi) Anordning foer bildning av en radiotestslinga i en saendarmottagare.
FI912030A0 (fi) Utbyte av sikten i en kokare.
FI902626A7 (fi) Anordning foer bildning av en radiotestslinga i en saendarmottagare.
FI902627A7 (fi) Anordning foer bildning av en radiotestslinga i en saendarmottagare.
FI911665A7 (fi) Saenklodsanordning foer bestaemning av stoerthoejden i en schaktugn.
FI904013A7 (fi) Kompensering av felet i en klockas gaong.
FI910657L (fi) Minskning av synligt ljus i en icke-synligt kemiskt ljus producerande anordning.
FI900301L (fi) Foerfarande foer framstaellning av eten-propen-kopolymerer i partikelform.
FI902625A7 (fi) Anordning foer bildning av en radiotestslinga i en saendarmottagare.
FI912525A0 (fi) Enhet foer foerstaerkning av ljussignaler i optiska fibertransmissionslinjer.
FI911532A0 (fi) Foerfarande foer minskning av detektheten i mycket tunna skikt.
FI901559A7 (fi) Foerfarande foer reglering av drifttillstaondet i en smaeltugn.
FI905598A0 (fi) Foerfarande foer bestaemning av ingediensinhalter av luftkrets i oenskad riktning.
FI905650A7 (fi) Stoed foer aonginmatningsroeret i torkcylindern av en pappersmaskin.
FI903005A0 (fi) Turbulensgenerator i inloppslaodan av en pappersmaskin.