PT87271A - Processo para a transmissao optica de mensagens - Google Patents
Processo para a transmissao optica de mensagensInfo
- Publication number
- PT87271A PT87271A PT87271A PT8727188A PT87271A PT 87271 A PT87271 A PT 87271A PT 87271 A PT87271 A PT 87271A PT 8727188 A PT8727188 A PT 8727188A PT 87271 A PT87271 A PT 87271A
- Authority
- PT
- Portugal
- Prior art keywords
- modulated
- emf
- modulated optical
- receiving side
- laser wave
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 title abstract 5
- 230000005540 biological transmission Effects 0.000 title abstract 2
- 238000000034 method Methods 0.000 title abstract 2
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 239000000835 fiber Substances 0.000 abstract 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
- H04B10/60—Receivers
- H04B10/61—Coherent receivers
- H04B10/64—Heterodyne, i.e. coherent receivers where, after the opto-electronic conversion, an electrical signal at an intermediate frequency [IF] is obtained
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
- Prostheses (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
- Cable Accessories (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Transmitters (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19873713340 DE3713340A1 (de) | 1987-04-21 | 1987-04-21 | Verfahren zur optischen nachrichtenuebertragung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| PT87271A true PT87271A (pt) | 1989-05-12 |
| PT87271B PT87271B (pt) | 1993-09-30 |
Family
ID=6325994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PT87271A PT87271B (pt) | 1987-04-21 | 1988-04-19 | Processo para a transmissao optica de mensagens |
Country Status (15)
| Country | Link |
|---|---|
| US (1) | US4882771A (pt) |
| EP (1) | EP0288418B1 (pt) |
| JP (1) | JPS63282722A (pt) |
| AT (1) | ATE78642T1 (pt) |
| AU (1) | AU597816B2 (pt) |
| CA (1) | CA1282832C (pt) |
| DE (2) | DE3713340A1 (pt) |
| DK (1) | DK168932B1 (pt) |
| ES (1) | ES2034356T3 (pt) |
| GR (1) | GR3005367T3 (pt) |
| IE (1) | IE61991B1 (pt) |
| NO (1) | NO171819C (pt) |
| PT (1) | PT87271B (pt) |
| TR (1) | TR26000A (pt) |
| ZA (1) | ZA882756B (pt) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3827228A1 (de) * | 1988-08-11 | 1990-02-15 | Standard Elektrik Lorenz Ag | Sende/empfangsteil fuer ein bidirektionales kohaerent-optisches uebertragungssystem |
| DE3900095C2 (de) * | 1989-01-04 | 1998-08-20 | Kommunikations Elektronik | Verfahren zur Übertragung von optischen Signalen über Lichtwellenleiter nach dem Überlagerungsprinzip |
| US4972514A (en) * | 1989-02-08 | 1990-11-20 | At&T Bell Laboratories | Full duplex lightwave communication system |
| EP0386736B1 (en) * | 1989-03-09 | 1995-06-07 | Canon Kabushiki Kaisha | Optical communications system |
| DE4019224A1 (de) * | 1990-06-15 | 1991-12-19 | Standard Elektrik Lorenz Ag | Funk-nachrichtenuebertragungssystem, insbesondere zellulares mobilfunksystem |
| US5101450A (en) * | 1991-01-23 | 1992-03-31 | Gte Laboratories Incorporated | Quadrature optical phase modulators for lightwave systems |
| US6868233B2 (en) * | 2000-12-14 | 2005-03-15 | Alcatel Usa Sourcing, L.P. | Wavelength agile optical transponder for bi-directional, single fiber WDM system testing |
| US9203513B2 (en) * | 2008-05-15 | 2015-12-01 | Teledyne Scientific & Imaging, Llc | SNR enhancement in modulating retroreflector optical communication links |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3433960A (en) * | 1966-10-31 | 1969-03-18 | Nasa | Retrodirective optical system |
| AU525304B2 (en) * | 1978-06-13 | 1982-10-28 | Amalgamated Wireless (Australasia) Limited | Optical fibre communication links |
| FR2513049A1 (fr) * | 1981-09-15 | 1983-03-18 | Thomson Csf | Systeme de communication optique et reseau telephonique comprenant un tel systeme |
| US4777661A (en) * | 1986-09-22 | 1988-10-11 | Simmonds Precision Products, Inc. | Apparatus and method for self-referencing and multiplexing intensity modulating fiber optic sensors |
| EP0319788B1 (de) * | 1987-12-07 | 1993-08-25 | Siemens Aktiengesellschaft | Optischer Überlagerungsempfänger für digitale Signale |
-
1987
- 1987-04-21 DE DE19873713340 patent/DE3713340A1/de not_active Withdrawn
-
1988
- 1988-03-24 EP EP19880730074 patent/EP0288418B1/de not_active Expired - Lifetime
- 1988-03-24 ES ES198888730074T patent/ES2034356T3/es not_active Expired - Lifetime
- 1988-03-24 DE DE8888730074T patent/DE3872921D1/de not_active Expired - Lifetime
- 1988-03-24 AT AT88730074T patent/ATE78642T1/de not_active IP Right Cessation
- 1988-03-29 IE IE94988A patent/IE61991B1/en not_active IP Right Cessation
- 1988-04-07 CA CA000563534A patent/CA1282832C/en not_active Expired - Lifetime
- 1988-04-13 TR TR88/0277A patent/TR26000A/xx unknown
- 1988-04-19 DK DK213188A patent/DK168932B1/da not_active IP Right Cessation
- 1988-04-19 JP JP63094699A patent/JPS63282722A/ja active Pending
- 1988-04-19 PT PT87271A patent/PT87271B/pt not_active IP Right Cessation
- 1988-04-20 NO NO881702A patent/NO171819C/no unknown
- 1988-04-20 AU AU14793/88A patent/AU597816B2/en not_active Ceased
- 1988-04-20 ZA ZA882756A patent/ZA882756B/xx unknown
- 1988-04-21 US US07/184,290 patent/US4882771A/en not_active Expired - Fee Related
-
1992
- 1992-08-06 GR GR920401700T patent/GR3005367T3/el unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NO171819C (no) | 1993-05-05 |
| AU1479388A (en) | 1988-10-27 |
| ATE78642T1 (de) | 1992-08-15 |
| ES2034356T3 (es) | 1993-04-01 |
| GR3005367T3 (pt) | 1993-05-24 |
| EP0288418B1 (de) | 1992-07-22 |
| US4882771A (en) | 1989-11-21 |
| ZA882756B (en) | 1988-10-18 |
| PT87271B (pt) | 1993-09-30 |
| NO881702L (no) | 1988-10-24 |
| TR26000A (tr) | 1993-10-08 |
| IE61991B1 (en) | 1994-12-14 |
| DK213188D0 (da) | 1988-04-19 |
| EP0288418A2 (de) | 1988-10-26 |
| JPS63282722A (ja) | 1988-11-18 |
| CA1282832C (en) | 1991-04-09 |
| DK168932B1 (da) | 1994-07-11 |
| IE880949L (en) | 1988-10-21 |
| NO881702D0 (no) | 1988-04-20 |
| AU597816B2 (en) | 1990-06-07 |
| DE3713340A1 (de) | 1988-11-10 |
| NO171819B (no) | 1993-01-25 |
| EP0288418A3 (en) | 1990-06-13 |
| DE3872921D1 (de) | 1992-08-27 |
| DK213188A (da) | 1988-10-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FG3A | Patent granted, date of granting |
Effective date: 19930315 |
|
| MM3A | Annulment or lapse |
Free format text: LAPSE DUE TO NON-PAYMENT OF FEES Effective date: 19970930 |