PT87271A - Processo para a transmissao optica de mensagens - Google Patents

Processo para a transmissao optica de mensagens

Info

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
Application number
PT87271A
Other languages
English (en)
Other versions
PT87271B (pt
Inventor
Manfred Rocks
Original Assignee
Krone Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Krone Ag filed Critical Krone Ag
Publication of PT87271A publication Critical patent/PT87271A/pt
Publication of PT87271B publication Critical patent/PT87271B/pt

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
    • H04B10/60—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)
  • Cable Accessories (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Transmitters (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
PT87271A 1987-04-21 1988-04-19 Processo para a transmissao optica de mensagens PT87271B (pt)

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)

* Cited by examiner, † Cited by third party
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
DE69019846T2 (de) * 1989-03-09 1995-12-07 Canon Kk Optisches Übertragungssystem.
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)

* Cited by examiner, † Cited by third party
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
DE3883499D1 (de) * 1987-12-07 1993-09-30 Siemens Ag Optischer Überlagerungsempfänger für digitale Signale.

Also Published As

Publication number Publication date
IE61991B1 (en) 1994-12-14
NO881702D0 (no) 1988-04-20
AU597816B2 (en) 1990-06-07
PT87271B (pt) 1993-09-30
CA1282832C (en) 1991-04-09
DK213188D0 (da) 1988-04-19
EP0288418A2 (de) 1988-10-26
NO171819B (no) 1993-01-25
NO171819C (no) 1993-05-05
DK168932B1 (da) 1994-07-11
ZA882756B (en) 1988-10-18
AU1479388A (en) 1988-10-27
JPS63282722A (ja) 1988-11-18
TR26000A (tr) 1993-10-08
ATE78642T1 (de) 1992-08-15
EP0288418A3 (en) 1990-06-13
IE880949L (en) 1988-10-21
US4882771A (en) 1989-11-21
ES2034356T3 (es) 1993-04-01
GR3005367T3 (pt) 1993-05-24
DE3713340A1 (de) 1988-11-10
DE3872921D1 (de) 1992-08-27
DK213188A (da) 1988-10-22
EP0288418B1 (de) 1992-07-22
NO881702L (no) 1988-10-24

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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