ES2111552T3 - Sistema de transmision optica. - Google Patents
Sistema de transmision optica.Info
- Publication number
- ES2111552T3 ES2111552T3 ES91203369T ES91203369T ES2111552T3 ES 2111552 T3 ES2111552 T3 ES 2111552T3 ES 91203369 T ES91203369 T ES 91203369T ES 91203369 T ES91203369 T ES 91203369T ES 2111552 T3 ES2111552 T3 ES 2111552T3
- Authority
- ES
- Spain
- Prior art keywords
- signal
- optical
- detected
- receiver
- direct detection
- 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
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2589—Bidirectional transmission
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
Abstract
EL SISTEMA INCLUYE DOS TRANSMISORES (T1, T2) Y DOS RECEPTORES (R1, R2). UN TRANSMISOR (T1) INCLUYE UN LASER DE LONGITUD DE ONDA SELECCIONABLE, QUE ENVIA UNA SEÑAL OPTICA FSK (OS1) QUE TIENE UNA INTENSIDAD CONSTANTE. EN UN PRIMER RECEPTOR (R1) ESTA SEÑAL OPTICA FSK SE TRANSFORMA EN UNA SEÑAL IM (OS1'') MEDIANTE UN FILTRO OPTICO DE BANDA DE PASO. ESTA SEÑAL IM SE DETECTA ENTONCES MEDIANTE UN PRIMER RECEPTOR DE DETECCION DIRECTA (DM). EN UN SEGUNDO RECEPTOR DE DETECCION DIRECTA (R2) LA SEÑAL OPTICA LED (OS2) NO SE DETECTA, DESDE EL MOMENTO QUE TIENE UNA INTENSIDAD CONSTANTE. UN SEGUNDO TRANSMISOR (T2) INCLUYE UN LASER "FABRY PEROT" O UN LED CON UN ANCHO DE LINEA AMPLIO, QUE ENVIA UNA SEÑAL OPTICA IM (OS2). ESTA SEÑAL OPTICA IM SE DETECTA MEDIANTE EL SEGUNDO RECEPTOR DE DETECCION DIRECTA (R2). LA SEÑAL NO ES DETECTADA POR EL PRIMER RECEPTOR DE DETECCION DIRECTA, A CAUSA DE QUE ESTA FUERTEMENTE ATENUADA A CAUSA DE SU PASO A TRAVES DEL FILTRO OPTICO DE PASO DE BANDA ESTRECHA (TM) ANTES DE SER APLICADO AL PRIMER RECEPTOR DE RETENCION DIRECTA. ESTE SISTEMA ES ESPECIALMENTE VENTAJOSO EN SISTEMAS OPTICOS DE TRANSMISION BIDIRECCIONAL DEBIDO A SU INSENSIBILIDAD INHERENTE PARA LAS REFLEXIONES.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP91203369A EP0548409B1 (en) | 1991-12-23 | 1991-12-23 | Optical transmission system |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2111552T3 true ES2111552T3 (es) | 1998-03-16 |
Family
ID=8208090
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES91203369T Expired - Lifetime ES2111552T3 (es) | 1991-12-23 | 1991-12-23 | Sistema de transmision optica. |
Country Status (6)
Country | Link |
---|---|
US (1) | US5384651A (es) |
EP (1) | EP0548409B1 (es) |
AU (1) | AU658465B2 (es) |
CA (1) | CA2086049A1 (es) |
DE (1) | DE69128537T2 (es) |
ES (1) | ES2111552T3 (es) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9408582D0 (en) * | 1994-04-29 | 1994-06-22 | Northern Telecom Ltd | Communications system |
DE29508660U1 (de) * | 1995-05-24 | 1996-09-19 | Robert Bosch Gmbh, 70469 Stuttgart | Optische Sende- und Empfangsanordnung |
US5861966A (en) * | 1995-12-27 | 1999-01-19 | Nynex Science & Technology, Inc. | Broad band optical fiber telecommunications network |
US5742416A (en) * | 1996-03-28 | 1998-04-21 | Ciena Corp. | Bidirectional WDM optical communication systems with bidirectional optical amplifiers |
US5798520A (en) * | 1996-07-31 | 1998-08-25 | Imec Vzw | Cell for optical-to-electrical signal conversion and amplification, and operation method thereof |
DE19716323A1 (de) | 1997-04-18 | 1998-10-22 | Alsthom Cge Alcatel | Modulationseinrichtung zur Modulation digitaler Signale |
US6072616A (en) * | 1997-06-23 | 2000-06-06 | Lucent Technologies Inc. | Apparatus and methods for improving linearity and noise performance of an optical source |
US6631018B1 (en) | 1997-08-27 | 2003-10-07 | Nortel Networks Limited | WDM optical network with passive pass-through at each node |
SE514821C2 (sv) * | 1997-11-24 | 2001-04-30 | Ericsson Telefon Ab L M | Förfarande och anordning för överhörningsreducering i en dubbelrikad optisk länk |
JP4902044B2 (ja) * | 1999-09-24 | 2012-03-21 | シャープ株式会社 | 半導体レーザ装置、光伝送装置、光伝送システム、電子機器、制御装置、接続コネクタ、通信装置、ならびに光伝送方法、データ送受信方法 |
RU2178954C1 (ru) | 2001-03-01 | 2002-01-27 | Септре Коммуникейшинс Лимитед | Беспроводная дуплексная оптическая система связи |
US6717964B2 (en) * | 2001-07-02 | 2004-04-06 | E20 Communications, Inc. | Method and apparatus for wavelength tuning of optically pumped vertical cavity surface emitting lasers |
US7088518B2 (en) * | 2002-12-03 | 2006-08-08 | Finisar Corporation | Bidirectional optical device |
WO2005076883A2 (en) * | 2004-02-05 | 2005-08-25 | Oplink Communications, Inc. | Integrated optical multiplexer and demultiplexer |
WO2006095354A2 (en) * | 2005-03-10 | 2006-09-14 | Ben-Gurion University Of The Negev - Research & Development Authority | Optical cdma by self-heterodyne filtering |
US8155530B2 (en) * | 2005-04-25 | 2012-04-10 | The Regents Of The University Of California | System and method for increasing spectral efficiency, capacity and/or dispersion-limited reach of modulated signals in communication links |
US7852152B2 (en) * | 2008-08-28 | 2010-12-14 | Menara Networks | Nth order tunable low-pass continuous time filter for fiber optic receivers |
US9077604B2 (en) | 2011-01-20 | 2015-07-07 | Stuart E. Goller | High speed information transfer method and system |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3417644A1 (de) * | 1984-05-12 | 1985-11-14 | Licentia Gmbh | Verfahren zur bidirektionalen optischen nachrichtenuebertragung |
GB2196809B (en) * | 1986-10-23 | 1991-05-22 | Plessey Co Plc | Optical communication system |
US5214641A (en) * | 1989-02-08 | 1993-05-25 | Silicon Systems, Inc. | Mixed analog digital secondary channel FSK modem |
US5020153A (en) * | 1989-02-08 | 1991-05-28 | At&T Bell Laboratories | Tunable narrowband receiver utilizing distributed Bragg reflector laser structure |
-
1991
- 1991-12-23 DE DE69128537T patent/DE69128537T2/de not_active Expired - Fee Related
- 1991-12-23 ES ES91203369T patent/ES2111552T3/es not_active Expired - Lifetime
- 1991-12-23 EP EP91203369A patent/EP0548409B1/en not_active Expired - Lifetime
-
1992
- 1992-12-11 AU AU30107/92A patent/AU658465B2/en not_active Ceased
- 1992-12-22 CA CA002086049A patent/CA2086049A1/en not_active Abandoned
-
1994
- 1994-03-21 US US08/216,245 patent/US5384651A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US5384651A (en) | 1995-01-24 |
EP0548409B1 (en) | 1997-12-29 |
CA2086049A1 (en) | 1993-06-24 |
EP0548409A1 (en) | 1993-06-30 |
AU658465B2 (en) | 1995-04-13 |
DE69128537D1 (de) | 1998-02-05 |
DE69128537T2 (de) | 1998-06-10 |
AU3010792A (en) | 1993-06-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
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