RU95105451A - Способ обеспечения управления отношением оптический сигнал-шум в приемнике, способ оптической телекоммуникации (варианты), система телекоммуникации, оптический усилитель и активное оптоволокно - Google Patents

Способ обеспечения управления отношением оптический сигнал-шум в приемнике, способ оптической телекоммуникации (варианты), система телекоммуникации, оптический усилитель и активное оптоволокно

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Publication number
RU95105451A
RU95105451A RU95105451/09A RU95105451A RU95105451A RU 95105451 A RU95105451 A RU 95105451A RU 95105451/09 A RU95105451/09 A RU 95105451/09A RU 95105451 A RU95105451 A RU 95105451A RU 95105451 A RU95105451 A RU 95105451A
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RU
Russia
Prior art keywords
optical
telecommunication
noise ratio
variants
provision
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RU95105451/09A
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English (en)
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RU2146853C1 (ru
Inventor
Мели Фаусто
It]
Стефано Роба Джакомо
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Пирелли Кави С.п.А. (IT)
Пирелли Кави С.п.А.
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Publication of RU2146853C1 publication Critical patent/RU2146853C1/ru

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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
    • 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
    • H01S3/05—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

Abstract

Изобретение относится к системе телекоммуникации, включающей оптические усилители, включенные каскадно, и предназначенной в основном для мультиплексной передачи с разделением длин волн, при этом комбинация допантов в оптическом волокне позволяет достигать высокого отношения сигнал/шум для всех каналов в заданном диапазоне длин волн, даже при наличии нескольких сигналов, одновременно вводимых в волокно.

Claims (1)

  1. Изобретение относится к системе телекоммуникации, включающей оптические усилители, включенные каскадно, и предназначенной в основном для мультиплексной передачи с разделением длин волн, при этом комбинация допантов в оптическом волокне позволяет достигать высокого отношения сигнал/шум для всех каналов в заданном диапазоне длин волн, даже при наличии нескольких сигналов, одновременно вводимых в волокно.
RU95105451A 1994-04-14 1995-04-13 Способ обеспечения управления отношением оптический сигнал/шум в приемнике, способ оптической телекоммуникации (варианты), система телекоммуникации, оптический усилитель и активное оптоволокно RU2146853C1 (ru)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI94A000712 1994-04-14
ITMI940712A IT1270032B (it) 1994-04-14 1994-04-14 Sistema di telecomunicazione amplificata a multiplazione a divisione di lunghezza d'onda

Publications (2)

Publication Number Publication Date
RU95105451A true RU95105451A (ru) 1997-01-27
RU2146853C1 RU2146853C1 (ru) 2000-03-20

Family

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Family Applications (1)

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RU95105451A RU2146853C1 (ru) 1994-04-14 1995-04-13 Способ обеспечения управления отношением оптический сигнал/шум в приемнике, способ оптической телекоммуникации (варианты), система телекоммуникации, оптический усилитель и активное оптоволокно

Country Status (22)

Country Link
US (2) US5808787A (ru)
EP (1) EP0677902B1 (ru)
JP (1) JPH0846592A (ru)
KR (1) KR950035162A (ru)
CN (1) CN1084098C (ru)
AT (1) ATE220482T1 (ru)
AU (1) AU691570B2 (ru)
BR (1) BR9501362A (ru)
CA (1) CA2147035C (ru)
CZ (1) CZ93995A3 (ru)
DE (1) DE69527325T2 (ru)
FI (1) FI951813A (ru)
HU (1) HU216228B (ru)
IT (1) IT1270032B (ru)
MY (1) MY130572A (ru)
NO (1) NO951446L (ru)
NZ (1) NZ270854A (ru)
PE (1) PE26096A1 (ru)
PL (2) PL177262B1 (ru)
RU (1) RU2146853C1 (ru)
SK (1) SK49795A3 (ru)
TW (1) TW301087B (ru)

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Also Published As

Publication number Publication date
NO951446L (no) 1995-10-16
FI951813A0 (fi) 1995-04-13
KR950035162A (ko) 1995-12-30
CA2147035A1 (en) 1995-10-15
PE26096A1 (es) 1996-06-19
NO951446D0 (no) 1995-04-12
US5748364A (en) 1998-05-05
RU2146853C1 (ru) 2000-03-20
FI951813A (fi) 1995-10-15
CN1113622A (zh) 1995-12-20
PL177262B1 (pl) 1999-10-29
TW301087B (ru) 1997-03-21
SK49795A3 (en) 1995-11-08
DE69527325T2 (de) 2003-01-02
NZ270854A (en) 1998-05-27
AU691570B2 (en) 1998-05-21
PL177566B1 (pl) 1999-12-31
HUT73075A (en) 1996-06-28
EP0677902B1 (en) 2002-07-10
ITMI940712A1 (it) 1995-10-14
MY130572A (en) 2007-06-29
ATE220482T1 (de) 2002-07-15
BR9501362A (pt) 1995-11-14
ITMI940712A0 (it) 1994-04-14
HU216228B (hu) 1999-05-28
CZ93995A3 (en) 1996-06-12
DE69527325D1 (de) 2002-08-14
HU9501071D0 (en) 1995-06-28
AU1620095A (en) 1995-10-26
JPH0846592A (ja) 1996-02-16
IT1270032B (it) 1997-04-28
CA2147035C (en) 2003-07-01
PL308104A1 (en) 1995-10-16
CN1084098C (zh) 2002-05-01
US5808787A (en) 1998-09-15
EP0677902A1 (en) 1995-10-18

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