WO1992011711A1 - Optoelektrische sende- und empfangsvorrichtung - Google Patents
Optoelektrische sende- und empfangsvorrichtung Download PDFInfo
- Publication number
- WO1992011711A1 WO1992011711A1 PCT/EP1991/002489 EP9102489W WO9211711A1 WO 1992011711 A1 WO1992011711 A1 WO 1992011711A1 EP 9102489 W EP9102489 W EP 9102489W WO 9211711 A1 WO9211711 A1 WO 9211711A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- polarization
- optical
- light
- transmitter
- optical transmitter
- Prior art date
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
- H04B10/40—Transceivers
-
- 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
Definitions
- the invention relates to an optoelectric transmission
- optical receiver and a beam splitter.
- Such an optoelectric transmitting and receiving device is known from DE-A-33 33 311.
- the output of the optical transmitter and the input of the optical receiver are connected to a beam splitter, which in turn is connected to one
- Optical fiber is coupled, over which the light is guided from and to the device.
- the beam splitting is arranged in the beam splitter
- wavelength selective through the use of a suitable wavelength multiplexer / demultiplexer.
- Optoelectric transmitting and receiving device with a beam splitter consisting of a semi-transparent mirror is known. Apart from the fact that only a small beam power is co-optic in this device, the low one is
- Reflections occur at the transition from beam price to fiber optic.
- the invention has for its object to provide an optoelectrical transmitting and receiving device which does not have the disadvantages of conventional devices of this type and which, in particular, enables low crosstalk, high power coupling and cost-effective production and can be networked and exchanged as desired and for various purposes
- Wavelengths can be used.
- the object is achieved according to the invention in that the light emitted by the optical transmitter is polarized, and in that the optical receiver essentially only detects polarized light whose
- the direction of polarization of the light emitted by the optical transmitter is.
- Manufacturing tolerances for the device according to the invention can be considerably less precise than in the case of conventional arrangements, which results in a much simpler construction and easier assembly.
- Another advantage is the fact that the design can be very compact.
- Device for different wavelengths and for any optical fiber connector can be used, which results in any interchangeability and connectivity for so-called open systems.
- the optical receiver itself can be designed such that it can receive essentially only the light that is complementarily polarized to the light emitted by the optical transmitter.
- a polarization filter in particular an inexpensive polarization film, which can be attached in a simple manner, for example by gluing it onto the reception window of the optical receiver.
- the optical transmitter is itself a polarized one t emitting light, such as a semiconductor laser that generates polarized light.
- a semiconductor laser that generates polarized light
- any non-polarized light-generating transmitter which is followed by a polarization filter.
- a semiconductor laser instead of a semiconductor laser, however, a light-emitting diode with an upstream polarizing film can also be used.
- Invention is the direction of polarization of the polarization filter upstream of the optical receiver substantially perpendicular to the direction of polarization of the light emitted by the semiconductor laser or of the optical transmitter
- Invention is the one connected to the beam splitter
- optical fibers should not be less than a certain minimum length, for example 5 m.
- a license beam 2 emitted by a transmitter 1 passes via a beam splitter 3, which is only shown schematically, to an optical fiber connector 4 and thus into the
- Optical fiber connector 4 and the beam splitter 3 to a receiver 6, which is connected upstream of a polarization filter 7.
- the beam splitter 3 can be designed in any manner, for example with a half mirror or a pinhole, for splitting the beams in a conventional manner.
- polarized light as transmission light beam 2 and a polarization filter 7 with
- Optical fiber connector 4 to keep it as small as possible.
- the use of the polarization filter ensures that disturbing, unwanted reflections that occur in the device cannot or practically cannot reach the receiver 6. Despite a possible simple Aufsaus the device and in particular the
- Crosstalk properties of the device according to the invention are extraordinarily good, and it is in particular also possible to couple in large beam powers without the crosstalk between the transmission light beam 2 and
- Receiving light beam 5 becomes large.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Couplings Of Light Guides (AREA)
- Optical Integrated Circuits (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI932855A FI932855A (fi) | 1990-12-21 | 1993-06-18 | Optoelektrisk saendar- och mottagaranordning |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19904041278 DE4041278A1 (de) | 1990-12-21 | 1990-12-21 | Optoelektrische sende- und empfangsvorrichtung |
DEP4041278.4 | 1990-12-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1992011711A1 true WO1992011711A1 (de) | 1992-07-09 |
Family
ID=6421092
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1991/002489 WO1992011711A1 (de) | 1990-12-21 | 1991-12-21 | Optoelektrische sende- und empfangsvorrichtung |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0563123A1 (de) |
DE (1) | DE4041278A1 (de) |
FI (1) | FI932855A (de) |
WO (1) | WO1992011711A1 (de) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0239206A1 (de) * | 1986-02-19 | 1987-09-30 | SiScan Systems, Inc. | Konfokal abbildendes optisches System mit verbessertem Signal-Rausch-Verhältnis |
EP0240157A2 (de) * | 1986-03-03 | 1987-10-07 | Seiko Instruments Inc. | Bidirektionales optisches Übertragungssystem mit einzelner Übertragungsleitung |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH550447A (de) * | 1968-09-12 | 1974-06-14 | Altrogge Wilhelm | Verfahren zur signaluebertragung mittels polarisierter lichtimpulse. |
DE3833311A1 (de) * | 1988-09-30 | 1990-04-19 | Siemens Ag | Optoelektronische sende- und empfangsvorrichtung |
-
1990
- 1990-12-21 DE DE19904041278 patent/DE4041278A1/de not_active Ceased
-
1991
- 1991-12-21 EP EP19920901096 patent/EP0563123A1/de not_active Ceased
- 1991-12-21 WO PCT/EP1991/002489 patent/WO1992011711A1/de not_active Application Discontinuation
-
1993
- 1993-06-18 FI FI932855A patent/FI932855A/fi not_active Application Discontinuation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0239206A1 (de) * | 1986-02-19 | 1987-09-30 | SiScan Systems, Inc. | Konfokal abbildendes optisches System mit verbessertem Signal-Rausch-Verhältnis |
EP0240157A2 (de) * | 1986-03-03 | 1987-10-07 | Seiko Instruments Inc. | Bidirektionales optisches Übertragungssystem mit einzelner Übertragungsleitung |
Also Published As
Publication number | Publication date |
---|---|
FI932855A0 (fi) | 1993-06-18 |
EP0563123A1 (de) | 1993-10-06 |
DE4041278A1 (de) | 1992-07-02 |
FI932855A (fi) | 1993-07-19 |
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