ITMI910864A0 - Linea di telecomunicazione a fibre ottiche con dispositivo di protezione per amplificatori ottici - Google Patents
Linea di telecomunicazione a fibre ottiche con dispositivo di protezione per amplificatori otticiInfo
- Publication number
- ITMI910864A0 ITMI910864A0 IT91MI864A ITMI910864A ITMI910864A0 IT MI910864 A0 ITMI910864 A0 IT MI910864A0 IT 91MI864 A IT91MI864 A IT 91MI864A IT MI910864 A ITMI910864 A IT MI910864A IT MI910864 A0 ITMI910864 A0 IT MI910864A0
- Authority
- IT
- Italy
- Prior art keywords
- fiber optic
- protection device
- optical amplifiers
- telecommunication line
- optic telecommunication
- Prior art date
Links
- 239000000835 fiber Substances 0.000 title 1
- 230000003287 optical effect Effects 0.000 title 1
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
- 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
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/077—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
-
- 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
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
- H04B10/07955—Monitoring or measuring power
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
- Lasers (AREA)
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI910864A IT1247845B (it) | 1991-03-29 | 1991-03-29 | Linea di telecomunicazione a fibre ottiche con dispositivo di protezione per amplificatori ottici |
US07/846,276 US5278686A (en) | 1991-03-29 | 1992-03-02 | Optical-fibre telecommunications line with protection device for optical amplifiers |
DE69226719T DE69226719T2 (de) | 1991-03-29 | 1992-03-05 | Lichtwellenleiternachrichtenübertragungsleitung mit Schutzvorrichtung für optische Verstärker |
ES92200637T ES2121812T3 (es) | 1991-03-29 | 1992-03-05 | Linea de telecomunicaciones con fibra optica con dispositivo de proteccion para amplificadores opticos. |
EP92200637A EP0506163B1 (en) | 1991-03-29 | 1992-03-05 | Optical-fibre telecommunications line with protection device for optical amplifiers |
CA002062665A CA2062665C (en) | 1991-03-29 | 1992-03-11 | Optical-fibre telecommunications line with protection device for optical amplifiers |
JP4074185A JPH05130044A (ja) | 1991-03-29 | 1992-03-30 | 光増幅器に対する保護装置を備えた光フアイバ通信回線 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI910864A IT1247845B (it) | 1991-03-29 | 1991-03-29 | Linea di telecomunicazione a fibre ottiche con dispositivo di protezione per amplificatori ottici |
Publications (3)
Publication Number | Publication Date |
---|---|
ITMI910864A0 true ITMI910864A0 (it) | 1991-03-29 |
ITMI910864A1 ITMI910864A1 (it) | 1992-09-29 |
IT1247845B IT1247845B (it) | 1995-01-02 |
Family
ID=11359337
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ITMI910864A IT1247845B (it) | 1991-03-29 | 1991-03-29 | Linea di telecomunicazione a fibre ottiche con dispositivo di protezione per amplificatori ottici |
Country Status (7)
Country | Link |
---|---|
US (1) | US5278686A (it) |
EP (1) | EP0506163B1 (it) |
JP (1) | JPH05130044A (it) |
CA (1) | CA2062665C (it) |
DE (1) | DE69226719T2 (it) |
ES (1) | ES2121812T3 (it) |
IT (1) | IT1247845B (it) |
Families Citing this family (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3225700B2 (ja) * | 1992-08-04 | 2001-11-05 | 松下電器産業株式会社 | 液晶パネルの製造方法および製造装置 |
JPH0816761B2 (ja) * | 1993-04-13 | 1996-02-21 | 日本電気株式会社 | 光増幅器制御回路 |
GB9309006D0 (en) * | 1993-04-30 | 1993-06-16 | Laser Ecosse Ltd | High power laser amplifier |
US5369656A (en) * | 1993-12-17 | 1994-11-29 | Motorola, Inc. | Inverted drive design for VCSEL-based optical interconnects |
JPH0837497A (ja) * | 1994-05-20 | 1996-02-06 | Fujitsu Ltd | 光増幅器及び光送信装置 |
GB2322025B (en) * | 1994-05-20 | 1998-11-04 | Fujitsu Ltd | Optical transmission apparatus |
JP3295533B2 (ja) * | 1994-06-30 | 2002-06-24 | 富士通株式会社 | 光増幅器 |
JPH0897773A (ja) * | 1994-09-27 | 1996-04-12 | Fujitsu Ltd | 光信号伝送装置 |
US5722063A (en) * | 1994-12-16 | 1998-02-24 | Qualcomm Incorporated | Method and apparatus for increasing receiver immunity to interference |
WO1996031023A1 (en) * | 1995-03-24 | 1996-10-03 | British Telecommunications Public Limited Company | Optical network |
JPH08331048A (ja) * | 1995-06-05 | 1996-12-13 | Fujitsu Ltd | 光信号受信装置 |
DE69524751T2 (de) * | 1995-09-21 | 2002-08-22 | Alcatel, Paris | Optische Verstärkungs-Kombinierungsanordnung und Verfahren zur Aufwärtsrichtungsübertragung unter Verwendung einer solchen Anordnung |
JPH09163413A (ja) * | 1995-12-11 | 1997-06-20 | Nec Corp | 光通信ネットワーク装置と光伝送方式と光通信ネットワーク |
US6404525B1 (en) | 1997-07-31 | 2002-06-11 | Nec Corporation | Optical add-drop multiplexer |
JP3102410B2 (ja) | 1998-05-18 | 2000-10-23 | 日本電気株式会社 | 光スイッチ |
US6580530B1 (en) | 1998-05-29 | 2003-06-17 | Cisco Photonics Italy S.R.L. | Optical communication system |
US6014237A (en) * | 1998-06-01 | 2000-01-11 | Sarnoff Corporation | Multiwavelength mode-locked dense wavelength division multiplexed optical communication systems |
US6388782B1 (en) | 1998-06-01 | 2002-05-14 | Sarnoff Corporation | Multi-wavelength dense wavelength division multiplexed optical switching systems |
EP1014595A4 (en) | 1998-06-26 | 2005-06-15 | Sumitomo Electric Industries | OPTICAL INTERMEDIATE SYSTEM |
KR100328291B1 (ko) * | 1998-07-14 | 2002-08-08 | 노베라 옵틱스 인코포레이티드 | 능동제어된파장별이득을갖는광증폭기및변화가능한출력스펙트럼을갖는광섬유광원 |
US6728026B2 (en) | 1998-07-14 | 2004-04-27 | Novera Optics, Inc. | Dynamically tunable optical amplifier and fiber optic light source |
US6192058B1 (en) | 1998-09-18 | 2001-02-20 | Sarnoff Corporation | Multiwavelength actively mode-locked external cavity semiconductor laser |
US6115154A (en) * | 1998-09-18 | 2000-09-05 | Telcordia Technologies, Inc. | Method and system for detecting loss of signal in wavelength division multiplexed systems |
US6583899B1 (en) | 1998-12-31 | 2003-06-24 | Cisco Photonics Italy S.R.L. | Automatic protection system for an optical transmission system |
EP1017192B1 (en) * | 1998-12-31 | 2006-02-22 | Cisco Systems International B.V. | Automatic protection system for an optical transmission system |
US20020063932A1 (en) * | 2000-05-30 | 2002-05-30 | Brian Unitt | Multiple access system for communications network |
US6473224B2 (en) * | 2000-12-01 | 2002-10-29 | Alcatel | Configurable safety shutdown for an optical amplifier using non-volatile storage |
JP4794775B2 (ja) * | 2001-09-07 | 2011-10-19 | 古河電気工業株式会社 | 光伝送システム |
US7603693B2 (en) * | 2002-05-15 | 2009-10-13 | Panasonic Corporation | CATV uplink optical transmission system |
US7440171B2 (en) * | 2002-10-31 | 2008-10-21 | Finisar Corporation | Staged amplifier for lower noise figure and higher saturation power |
ITMI20040431A1 (it) * | 2004-03-05 | 2004-06-05 | Marconi Comm Spa | Dispositivo ottico di amplificazione di connessione-disconnessione |
US7773884B2 (en) * | 2005-10-31 | 2010-08-10 | Red - C Optical Newworks Ltd. | Method and apparatus for automatic shut-down and start-up of optical amplifiers in optical networks |
EP2161859B1 (en) * | 2008-09-05 | 2012-06-27 | Nokia Siemens Networks OY | Safety and power control arrangement for optical fiber communication apparatus |
US8897657B2 (en) * | 2010-02-17 | 2014-11-25 | The Johns Hopkins University | Apparatus and method for stabilizing power to an optical multimode receiver |
US10439733B2 (en) * | 2014-01-13 | 2019-10-08 | The Johns Hopkins University | Fiber optic circuit breaker |
US10805034B2 (en) * | 2018-02-22 | 2020-10-13 | Nokia Solutions And Networks Oy | Protection of channel connections in an optical network |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2751645C3 (de) * | 1977-11-18 | 1980-08-14 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Verfahren zur Überwachung von Nachrichtenübertragungssystemen mit Lichtwellenleitern |
JPS55152434A (en) * | 1979-05-17 | 1980-11-27 | Kokusai Denshin Denwa Co Ltd <Kdd> | Light output monitoring system for light repeater |
DE3201763A1 (de) * | 1982-01-21 | 1983-09-08 | Felten & Guilleaume Fernmeldeanlagen GmbH, 8500 Nürnberg | Optische uebertragungsstrecke |
JPS60229433A (ja) * | 1984-04-26 | 1985-11-14 | Nec Corp | 双方向光通信方式 |
EP0331304B1 (en) * | 1988-03-04 | 1993-11-24 | BRITISH TELECOMMUNICATIONS public limited company | Amplification of optical signals |
JP3137632B2 (ja) * | 1989-08-31 | 2001-02-26 | 富士通株式会社 | 光ファイバ増幅器を備えた光通信方式 |
GB9008895D0 (en) * | 1990-04-20 | 1990-06-20 | British Telecomm | Optical communications link fault signalling |
-
1991
- 1991-03-29 IT ITMI910864A patent/IT1247845B/it active IP Right Grant
-
1992
- 1992-03-02 US US07/846,276 patent/US5278686A/en not_active Expired - Lifetime
- 1992-03-05 ES ES92200637T patent/ES2121812T3/es not_active Expired - Lifetime
- 1992-03-05 EP EP92200637A patent/EP0506163B1/en not_active Expired - Lifetime
- 1992-03-05 DE DE69226719T patent/DE69226719T2/de not_active Expired - Lifetime
- 1992-03-11 CA CA002062665A patent/CA2062665C/en not_active Expired - Lifetime
- 1992-03-30 JP JP4074185A patent/JPH05130044A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
EP0506163B1 (en) | 1998-08-26 |
CA2062665C (en) | 2000-05-02 |
ES2121812T3 (es) | 1998-12-16 |
DE69226719D1 (de) | 1998-10-01 |
DE69226719T2 (de) | 1999-03-25 |
CA2062665A1 (en) | 1992-09-30 |
ITMI910864A1 (it) | 1992-09-29 |
US5278686A (en) | 1994-01-11 |
EP0506163A1 (en) | 1992-09-30 |
JPH05130044A (ja) | 1993-05-25 |
IT1247845B (it) | 1995-01-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
0001 | Granted | ||
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19980327 |