ES2075852T3 - Sistemas de transmision optica seguros ante las caidas de tension. - Google Patents
Sistemas de transmision optica seguros ante las caidas de tension.Info
- Publication number
- ES2075852T3 ES2075852T3 ES89311375T ES89311375T ES2075852T3 ES 2075852 T3 ES2075852 T3 ES 2075852T3 ES 89311375 T ES89311375 T ES 89311375T ES 89311375 T ES89311375 T ES 89311375T ES 2075852 T3 ES2075852 T3 ES 2075852T3
- Authority
- ES
- Spain
- Prior art keywords
- optical
- signal
- forker
- fiber
- line
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
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
- H04B10/27—Arrangements for networking
-
- 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
- H04B10/03—Arrangements for fault recovery
- H04B10/032—Arrangements for fault recovery using working and protection systems
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computing Systems (AREA)
- Optical Communication System (AREA)
Abstract
PARA IMPEDIR UNA INTERRUPCION DEL SERVICIO DEBIDO A UNA INTERRUPCION EN UNA FIBRA OPTICA SE UTILIZAN SISTEMAS DE ONDAS LUMINOSAS ENCAMINADAS POR RUTAS DIFERENTES. POR EJEMPLO, EN EL EXTREMO DE TRANSMISION, UNA LINEA DE FIBRA SE DIVIDE EN DOS, Y CADA UNA DE LAS DOS LINEAS ATRAVIESA UN TRAYECTO FISICAMENTE DIFERENTE. EN EL EXTREMO DE RECEPCION SE SELECCIONA Y SE DESMODULA LA SEÑAL DE UNA DE LAS LINEAS. SI, POR CUALQUIER MOTIVO, SE PIERDE LA SEÑAL EN LA LINEA QUE SE ESTA CONTROLANDO, EL RECEPTOR CONMUTA A LA LINEA DE RESERVA. EL ENCAMINAMIENTO DIFERENTE PUEDE LOGRARSE MEDIANTE EL USO DE DOS SISTEMAS OPTICOS COMPLETAMENTE INDEPENDIENTES PARA ENVIAR LA MISMA SEÑAL POR DIFERENTES RUTAS SIMULTANEAMENTE; O DIVIDIENDO LA FIBRA OPTICA POR MEDIO DE UN BIFURCADOR DE FIBRA FUNDIDA (3DB) PARA ENVIAR LA MISMA SEÑAL POR DOS RUTAS DIFERENTES. SE PUEDE UTILIZAR UN CONMUTADOR OPTICO ELECTROMECANICO 2X2 PARA SELECCIONAR LA FIBRA OPTICA APROPIADA. UN BIFURCADOR 3DB ES MAS ECONOMICO QUE DOS SISTEMAS OPTICOS INDEPENDIENTES. NO OBSTANTE, EL BIFURCADOR 3DB INTRODUCE UN FACTOR DE PERDIDA QUE ES EXCESIVO. UN MODULADOR OPTICO PUEDE SUSTITUIR A UN BIFURCADOR DE HAZ 3DB. EL MODULADOR, QUE COMPRENDE FRECUENTEMENTE UN CONMUTADOR DE NIOBATO DE LITIO, SE UTILIZA PARA IMPRIMIR UNA SEÑAL DIGITAL EN UN HAZ OPTICO DC. EL MODULADOR DE NIOBATO DE LITIO TIENE UNA ENTRADA OPTICA CW, UNA ENTRADA DE CONTROL OPTICO REPRESENTANTE DE DATOS DIGITALES, Y NORMALMENTE DOS SALIDAS OPTICAS DIGITALES. SE UTILIZA GENERALMENTE UNA SALIDA COMO LA SEÑAL DE LINEA MODULADA, Y LA OTRA SALIDA, QUE ES EL COMPLEMENTO DE LA SEÑAL MODULADA, SE TERMINA EN UN INDICE CON ACOPLAMIENTO DE ACEITE PARA EVITAR LA REFLEXION. EN RESUMEN, EN ESTE INVENTO NO SE DESECHA LA SALIDA OPTICA DIGITAL PREVIAMENTE DESECHADA DEL MODO OPTICO. SE UTILIZA COMO UNA FUENTE DE SEÑAL PARA LA RUTA DIFERENTE, EVITANDO CON ELLO LA NECESIDAD DE NINGUN OTRO BIFURCADOR DE HAZ PRODUCTOR DE PERDIDAS. LAS VENTAJAS SON SIGNIFICATIVAS. EL LASER FUNCIONA CONTINUAMENTE. POR ELLO NO HAY FRAGMENTACIONES. LA POTENCIA (POR TERMINO MEDIO) SE DIRIGE EL 50% DEL TIEMPO A UNA SALIDA Y EL 50% DEL TIEMPO A LA OTRA SALIDA. DE ESTE MODO NO HAY PERDIDA DE POTENCIA COMO EN EL CASO DE UTILIZAR UN BIFURCADOR. CUANDO SEA APROPIADO, EN EL EXTREMO DE RECEPCION, SE PUEDE REALIZAR UNA COMPLEMENTACION PARA RECUPERAR EL MODELO DE BIT ORIGINAL SI SE DETECTA EL COMPLEMENTO DE LA SEÑAL.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/269,289 US4878726A (en) | 1988-11-10 | 1988-11-10 | Optical transmission system |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2075852T3 true ES2075852T3 (es) | 1995-10-16 |
Family
ID=23026626
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES89311375T Expired - Lifetime ES2075852T3 (es) | 1988-11-10 | 1989-11-02 | Sistemas de transmision optica seguros ante las caidas de tension. |
Country Status (8)
Country | Link |
---|---|
US (1) | US4878726A (es) |
EP (1) | EP0372711B1 (es) |
JP (1) | JPH0744498B2 (es) |
KR (1) | KR0139543B1 (es) |
CA (1) | CA1293998C (es) |
DE (1) | DE68923853T2 (es) |
ES (1) | ES2075852T3 (es) |
HK (1) | HK33696A (es) |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1238032B (it) * | 1990-01-30 | 1993-06-23 | Pirelli Cavi Spa | Linea di telecomunicazione a fibre ottiche con canali separati di servizio |
US5253935A (en) * | 1990-05-04 | 1993-10-19 | Raychem Corporation | Couples for terminating optical fiber ends |
US5005936A (en) * | 1990-05-22 | 1991-04-09 | Hughes Aircraft Company | Long range bidirectional optical fiber communication link |
US5317440A (en) * | 1990-05-21 | 1994-05-31 | Hughes Aircraft Company | Single wavelength bidirectional optical fiber communication link |
US5214728A (en) * | 1990-06-19 | 1993-05-25 | Sumitomo Electric Industries, Ltd. | Light communication system |
US5105293A (en) * | 1990-10-02 | 1992-04-14 | At&T Bell Laboratories | Differential optical signal transmission using a single optical fiber |
CA2057264C (en) * | 1991-02-15 | 1995-09-26 | Hai-Pin Hsu | Amplifier for optical fiber communication link |
JP2628950B2 (ja) * | 1991-10-07 | 1997-07-09 | 株式会社日立製作所 | 携帯電話システムにおける位置登録方法 |
US5317658A (en) * | 1992-04-06 | 1994-05-31 | At&T Bell Laboratories | Apparatus and method for providing a polarization independent optical switch |
DE4430512C2 (de) * | 1994-08-27 | 2000-06-29 | Bosch Gmbh Robert | Vorrichtung zum Beschalten einer verstärkenden Faser |
US5907418A (en) * | 1995-08-09 | 1999-05-25 | Motorola, Inc. | Apparatus for infrared channel and method therefor |
AU9432898A (en) * | 1997-10-06 | 1999-04-27 | Dsc Communications A/S | An optical network with protection path for failure recovery |
GB9919580D0 (en) | 1999-08-18 | 1999-10-20 | Cit Alcatel | A landing stage for a submarine communications system |
US7324500B1 (en) * | 2000-10-31 | 2008-01-29 | Jeremy Benjamin As Receiver For Chiaro Networks Ltd. | Router network protection using multiple facility interfaces |
DE10144907A1 (de) | 2001-09-12 | 2003-04-03 | Infineon Technologies Ag | Sendeanordnung, insbesondere für den Mobilfunk |
EP1296468A1 (en) * | 2001-09-24 | 2003-03-26 | Alcatel | Modulation method and bit error detection in optical transmission systems |
JP2003224872A (ja) * | 2002-01-30 | 2003-08-08 | Hitachi Ltd | 光切替装置、光伝送システムおよび光信号経路の設定方法 |
US7171116B2 (en) * | 2002-09-17 | 2007-01-30 | Lucent Technologies Inc. | Provisionable keep-alive signal for physical-layer protection of an optical network |
US7366424B2 (en) * | 2003-08-20 | 2008-04-29 | Lucent Technologies Inc. | Methods and apparatus for producing transmission failure protected, bridged, and dispersion resistant signals |
US7966294B1 (en) * | 2004-01-08 | 2011-06-21 | Netapp, Inc. | User interface system for a clustered storage system |
US7406135B2 (en) * | 2004-06-22 | 2008-07-29 | International Business Machines Corporation | Reducing power consumption in signal detection |
US7409163B2 (en) * | 2004-06-30 | 2008-08-05 | Lucent Technologies Inc. | Method and apparatus for optical signal transmission |
WO2006128250A1 (en) * | 2005-06-03 | 2006-12-07 | The Commonwealth Of Australia | Photonic link with improved dynamic range |
TW200827797A (en) * | 2006-12-20 | 2008-07-01 | Inventec Multimedia & Telecom | Switching device of light-beam channel of optical fiber network |
US8068742B2 (en) * | 2008-07-10 | 2011-11-29 | Finisar Corporation | Phase shift keyed modulation of optical signal using chirp managed laser |
EP2717168B1 (en) * | 2012-10-05 | 2017-08-09 | General Electric Technology GmbH | Networks and method for reliable transfer of information between industrial systems |
WO2015095993A1 (zh) * | 2013-12-23 | 2015-07-02 | 华为技术有限公司 | 一种光差分信号的发送和接收方法、装置和系统 |
US11494541B2 (en) * | 2020-01-16 | 2022-11-08 | Lightmatter, Inc. | Pin sharing for photonic processors |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5797741A (en) * | 1980-12-10 | 1982-06-17 | Fujitsu Ltd | Optical transmission device with light distributing function |
JPS59151543A (ja) * | 1983-02-08 | 1984-08-30 | Toshiba Corp | 光通信方式 |
DE3335156A1 (de) * | 1983-09-28 | 1985-04-04 | Siemens AG, 1000 Berlin und 8000 München | Verfahren zur erkennung des ausfalls eines oder mehrerer uebertragungskanaele in einem redundant ausgelegten optischen uebertragungssystem |
JPS6212221A (ja) * | 1985-07-10 | 1987-01-21 | Fujitsu Ltd | 光伝送方式 |
US4705350A (en) * | 1985-09-19 | 1987-11-10 | Bell Communications Research, Inc. | Optical transmission network |
JPH0626326B2 (ja) * | 1985-10-25 | 1994-04-06 | 富士通株式会社 | 光分配方式 |
US4755016A (en) * | 1985-11-06 | 1988-07-05 | American Telephone And Telegraph Company At&T Bell Laboratories | Coherent lightwave transmitters |
GB2192272B (en) * | 1986-07-02 | 1990-06-06 | Cossor Electronics Ltd | Spectrum analyser |
JPH01123538A (ja) * | 1987-11-07 | 1989-05-16 | Nec Corp | 光平衡伝送回路 |
-
1988
- 1988-11-10 US US07/269,289 patent/US4878726A/en not_active Expired - Lifetime
-
1989
- 1989-09-19 CA CA000611956A patent/CA1293998C/en not_active Expired - Fee Related
- 1989-11-02 DE DE68923853T patent/DE68923853T2/de not_active Expired - Fee Related
- 1989-11-02 EP EP89311375A patent/EP0372711B1/en not_active Expired - Lifetime
- 1989-11-02 ES ES89311375T patent/ES2075852T3/es not_active Expired - Lifetime
- 1989-11-07 KR KR1019890016067A patent/KR0139543B1/ko not_active IP Right Cessation
- 1989-11-10 JP JP1291378A patent/JPH0744498B2/ja not_active Expired - Fee Related
-
1996
- 1996-02-29 HK HK33696A patent/HK33696A/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
JPH0744498B2 (ja) | 1995-05-15 |
EP0372711A3 (en) | 1991-11-27 |
EP0372711A2 (en) | 1990-06-13 |
US4878726A (en) | 1989-11-07 |
CA1293998C (en) | 1992-01-07 |
KR0139543B1 (ko) | 1998-07-01 |
HK33696A (en) | 1996-03-08 |
EP0372711B1 (en) | 1995-08-16 |
DE68923853T2 (de) | 1996-05-02 |
JPH02230220A (ja) | 1990-09-12 |
DE68923853D1 (de) | 1995-09-21 |
KR900008794A (ko) | 1990-06-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
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