DE9111173U1 - Arrangement for combining electrical high-frequency signals - Google Patents
Arrangement for combining electrical high-frequency signalsInfo
- Publication number
- DE9111173U1 DE9111173U1 DE9111173U DE9111173U DE9111173U1 DE 9111173 U1 DE9111173 U1 DE 9111173U1 DE 9111173 U DE9111173 U DE 9111173U DE 9111173 U DE9111173 U DE 9111173U DE 9111173 U1 DE9111173 U1 DE 9111173U1
- Authority
- DE
- Germany
- Prior art keywords
- optical
- signals
- arrangement
- frequency signals
- combined
- 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
- 230000003287 optical effect Effects 0.000 claims description 22
- 230000005540 biological transmission Effects 0.000 claims description 8
- 239000013307 optical fiber Substances 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000005693 optoelectronics Effects 0.000 description 2
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
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
Description
MG 91/05 2 Ml/st 03.09.1991MG 91/05 2 ml/pc 03.09.1991
Die Erfindung betrifft eine Anordnung zum übertragen von Hochfrequenz-Signalen nach dem Oberbegriff des Anspruchs 1. Es ist bekannt, derartige Übertragungsfrequenzbereiche durch elektrische Additions- und Filteranordnungen in ein gemeinsames elektrisches Signal zu verwandeln. Weiterhin ist bekannt, dieses gemeinsame elektrische Signal nach elektrooptischer Umwandlung über Lichtwellenleiter zu übertragen. Die Heranführung der Signale an den Addierer kann aber bei größeren Entfernungen nach dem heutigen technischen Stand nur auf optischem Wege geschehen. Dabei muß das optische Signal vor dem Addierer wieder in ein elektrisches umgewandelt werden.The invention relates to an arrangement for transmitting high-frequency signals according to the preamble of claim 1. It is known to convert such transmission frequency ranges into a common electrical signal using electrical addition and filter arrangements. It is also known to transmit this common electrical signal after electro-optical conversion via optical fibers. However, the signals can only be fed to the adder over longer distances using optical means according to the current state of technology. The optical signal must be converted back into an electrical signal before it reaches the adder.
Der Erfindung lag daher die Aufgabe zugrunde, eine optoelektronische übertragung so zu gestalten, daß der Aufwand an optoelektronischen Bauelementen verringert wird.The invention was therefore based on the object of designing an optoelectronic transmission in such a way that the expenditure on optoelectronic components is reduced.
Der Stand der Technik ist in Figur 1 und ein Ausführungsbeispiel der Erfindung in Figur 3 dargestellt. Die Frequenzbereiche F1 und F2 werden über je einen elektrooptischen Wandler 1 und 2 in die optischen Signale 0S1 und 0S2 umgewandelt und über die Lichtwellenleiter LWL1 und LWL2, wie Fig. 1 zeigt, zunächst durch die optoelektrischen Wandler 7 und 8 in elektrische Signale zurückverwandelt. Die elektrischen Signale, beispielsweise F1 mit 47 bis 230 MHz und F2 mit 230 - 600 MHz werden im Addierer 4 zu einem Summensignal F zusammengefaßt. Dieses Signal F wird in ein optisches Signal 0S3 verwandelt (durch den elektrooptischen Wandler 9) und über den Lichtwellenleiter 5 mit großer Reichweite übertragen. Am Ende der Übertragungsstrecke wird schließlich das Signal F als elektrisches Summensignal durch den optoelektrischen Wandler 6 wiederhergestellt.The state of the art is shown in Figure 1 and an embodiment of the invention in Figure 3. The frequency ranges F1 and F2 are converted into the optical signals 0S1 and 0S2 by an electro-optical converter 1 and 2 respectively and are converted back into electrical signals by the opto-electrical converters 7 and 8 via the optical waveguides LWL1 and LWL2, as shown in Figure 1. The electrical signals, for example F1 with 47 to 230 MHz and F2 with 230 - 600 MHz, are combined in the adder 4 to form a sum signal F. This signal F is converted into an optical signal 0S3 (by the electro-optical converter 9) and transmitted over a long range via the optical waveguide 5. At the end of the transmission path, the signal F is finally restored as an electrical sum signal by the opto-electrical converter 6.
91/05 2 Ml/st 03.09.199191/05 2 ml/h 03.09.1991
Im Falle der übertragung nach der Erfindung, die in Figur 2 dargestellt ist, werden die optischen Signale 0S1 und 0S2 dem passiven optischen Koppler 3 zugeführt, der die beiden Signale zu einem gemeinsamen optischen Signal 0S3 zusammenfaßt. Der Lichtwellenleiter 5 enthält dann die gemeinsame optische Information. Die optischen Summensignale werden nach Durchlaufen der Übertragungsstrecke 5 mit einem elektrooptischen Wandler 6 in das elektrische Summensignal umgewandelt. Dieses Signal F wird beispielsweise in örtliche Breitbandverteilnetze eingespeist. Wenn man mit elektrischen Signalen größere Strecken zu überbrücken hat, benötigt man ab 500 m Zwischenverstärker, die sehr teuer sind. Die erfindungsgemäße Anordnung hat den Vorteil, daß man Signale zu einem Addierer schicken kann, welcher meist die Funktion eines Senders ausübt und ohne Zwischenverstärker und ohne Mehrfachumwandlung optische Signale direkt zusammenfassen und in ein Fernkabel einspeisen kann.In the case of transmission according to the invention, which is shown in Figure 2, the optical signals 0S1 and 0S2 are fed to the passive optical coupler 3, which combines the two signals into a common optical signal 0S3. The optical waveguide 5 then contains the common optical information. After passing through the transmission path 5, the optical sum signals are converted into the electrical sum signal by an electro-optical converter 6. This signal F is fed into local broadband distribution networks, for example. If you have to bridge longer distances with electrical signals, you need intermediate amplifiers from 500 m, which are very expensive. The arrangement according to the invention has the advantage that you can send signals to an adder, which usually performs the function of a transmitter and can combine optical signals directly and feed them into a long-distance cable without intermediate amplifiers and without multiple conversion.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE9111173U DE9111173U1 (en) | 1991-09-09 | 1991-09-09 | Arrangement for combining electrical high-frequency signals |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE9111173U DE9111173U1 (en) | 1991-09-09 | 1991-09-09 | Arrangement for combining electrical high-frequency signals |
Publications (1)
Publication Number | Publication Date |
---|---|
DE9111173U1 true DE9111173U1 (en) | 1991-12-05 |
Family
ID=6871068
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE9111173U Expired - Lifetime DE9111173U1 (en) | 1991-09-09 | 1991-09-09 | Arrangement for combining electrical high-frequency signals |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE9111173U1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19626128A1 (en) * | 1996-06-28 | 1998-01-08 | Sel Alcatel Ag | Transmitting device, transmitting unit and optical transmission system for the optical transmission of analog electrical signals |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2922418C2 (en) * | 1979-06-01 | 1981-12-03 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Integrated services message transmission and switching system for sound, images and data |
DE3203828A1 (en) * | 1982-02-04 | 1983-08-11 | Siemens AG, 1000 Berlin und 8000 München | METHOD FOR REDUCING LEVEL DYNAMICS IN AN OPTICAL TRANSMISSION SYSTEM |
DE3434775A1 (en) * | 1984-09-21 | 1986-04-03 | Siemens AG, 1000 Berlin und 8000 München | Method for two-way data transmission |
EP0350207A2 (en) * | 1988-07-06 | 1990-01-10 | AT&T Corp. | Transceiver-based single fiber lan |
WO1991008631A1 (en) * | 1989-12-04 | 1991-06-13 | Scientific-Atlanta, Inc. | Method and apparatus for transmitting broadband amplitude modulated radio frequency signals over optical links |
-
1991
- 1991-09-09 DE DE9111173U patent/DE9111173U1/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2922418C2 (en) * | 1979-06-01 | 1981-12-03 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Integrated services message transmission and switching system for sound, images and data |
DE3203828A1 (en) * | 1982-02-04 | 1983-08-11 | Siemens AG, 1000 Berlin und 8000 München | METHOD FOR REDUCING LEVEL DYNAMICS IN AN OPTICAL TRANSMISSION SYSTEM |
DE3434775A1 (en) * | 1984-09-21 | 1986-04-03 | Siemens AG, 1000 Berlin und 8000 München | Method for two-way data transmission |
EP0350207A2 (en) * | 1988-07-06 | 1990-01-10 | AT&T Corp. | Transceiver-based single fiber lan |
WO1991008631A1 (en) * | 1989-12-04 | 1991-06-13 | Scientific-Atlanta, Inc. | Method and apparatus for transmitting broadband amplitude modulated radio frequency signals over optical links |
Non-Patent Citations (2)
Title |
---|
KERSTEN, Ralf Th.: Einführung in die Optische Nachrichtentechnik, Springer Verlag 1983, S.302-401 * |
UNGER, Hans-Georg: Optische Nachrichtentechnik, Hüthig Verlag GmbH Heidelberg, 1985, Teil II * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19626128A1 (en) * | 1996-06-28 | 1998-01-08 | Sel Alcatel Ag | Transmitting device, transmitting unit and optical transmission system for the optical transmission of analog electrical signals |
US6034801A (en) * | 1996-06-28 | 2000-03-07 | Alcatel | Transmitting device, transmitting apparatus and optical transmission system for optically transmitting analog electrical signals |
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