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WO1999059281A1 - Multiplexeur et demultiplexeur optiques - Google Patents

Multiplexeur et demultiplexeur optiques Download PDF

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Publication number
WO1999059281A1
WO1999059281A1 PCT/DE1999/001305 DE9901305W WO9959281A1 WO 1999059281 A1 WO1999059281 A1 WO 1999059281A1 DE 9901305 W DE9901305 W DE 9901305W WO 9959281 A1 WO9959281 A1 WO 9959281A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical
lambda
band
filter
filters
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.)
Ceased
Application number
PCT/DE1999/001305
Other languages
German (de)
English (en)
Inventor
Peter Krummrich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to AU47678/99A priority Critical patent/AU4767899A/en
Publication of WO1999059281A1 publication Critical patent/WO1999059281A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/03—WDM arrangements
    • H04J14/0307—Multiplexers; Demultiplexers

Definitions

  • Optical transmission systems are increasingly using the long-wavelength multiplex method, in which several channels with different wavelengths are transmitted over the same transmission path. At the beginning of the route, the individual channels must be brought together to form a transmission band, which is divided into individual channels again at the end of the route.
  • the channels are, for example, using a non-wavelength-selective power splitter fiber coupler
  • Demultiplexers that are implemented with 1: N couplers and filters also have high vapors.
  • the object of the invention is to provide optical multiplexers and demultiplexers with low vapors.
  • FIG. 1 shows an optical demultiplexer according to the invention
  • Figure 2 shows an optical multiplexer according to the invention.
  • the demultiplexer DMUX shown in FIG. 1 is designed as a filter cascade which has the structure of a binary tree. Each filter has one input and two outputs, each of which is connected to inputs of filters of the next filter stage. Accordingly, the number of filters doubles in each subsequent stage.
  • An input of the optical DE De ultiplexers DMUX or Fl of the first filter is a transmission band ⁇ - 8 supplied and ⁇ - in a lower sub-band 4 and an upper sub-band ⁇ 5-8 divided up.
  • a second filter FD2 divides the lower sub-band into two further sub-bands ⁇ lf2 and ⁇ 3 , 4 which are adjacent in terms of wavelength; Accordingly, the upper subband is divided in a third filter FD3 into likewise adjacent further adjacent subbands ⁇ 5 , 6 and ⁇ 7 , e.
  • the lower and upper sub-band are thus in each case again lower in another and another upper subband split
  • Wavelength filters can be used as filters, combining a high pass and. correspond to a low pass. It is of course also possible to use filters with bandpass characteristics in whole or in part in order to suppress interference outside the wavelength ranges used.
  • FIG. 2 shows an optical multiplexer MUX, which is also implemented as a filter cascade with the same tree structure. The filters each have two inputs ME1, ME2; ... and an output MA on. The first filter stage FM4 to FM7 is used to combine two adjacent transmission channels ⁇ i, ⁇ 2 ; ⁇ 3 , ⁇ 4 , ... to ⁇ 7 , ⁇ 6 .
  • the number of transmission channels usually corresponds to a power of 2.
  • the optical multiplexer or demultiplexer can of course also be implemented for any number of channels.
  • the filters used are known components, for example from E-TEK Dynamics, ENC. , 1855 Lundy Avenue, San Jose, CA 95131 USA.
  • Demultiplexers and multiplexers can be built modularly and expanded according to the number of transmission channels required. In the simplest case, only two channels, for example ⁇ i and ⁇ 5 , can be transmitted, for which purpose only the filters FM1 and FD1 are required. In a first ER can wide treatment stage with the aid of the filter and FM2 FM5 and FD2 and FD5 four channels, for example, ⁇ : ⁇ 3, ⁇ 5 and ⁇ are 7 / transfer, etc.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
  • Optical Integrated Circuits (AREA)

Abstract

L'invention concerne un multiplexeur optique (MUX) et un démultiplexeur optique (DMUX) à structure en cascade selon le principe de l'arbre binaire. Dans le cas du démultiplexeur, une bande de transmission ( lambda 1-8) est divisée en une bande partielle inférieure ( lambda 1-4) et une bande partielle supérieure ( lambda 5-8) dans un premier filtre optique FD1. Les bandes partielles sont divisées ensuite en bandes partielles supplémentaires ( lambda 1,2 à lambda 7,8) ou en voies de transmission ( lambda 1- lambda 8). Dans le cas du multiplexeur, des voies de transmission individuelles sont réunies de manière correspondante. La faible perte d'insertion et la possibilité d'extension graduelle constituent des avantages.
PCT/DE1999/001305 1998-05-12 1999-05-03 Multiplexeur et demultiplexeur optiques Ceased WO1999059281A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU47678/99A AU4767899A (en) 1998-05-12 1999-05-03 Optical multiplexer and optical demultiplexer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19821245A DE19821245C1 (de) 1998-05-12 1998-05-12 Optischer Multiplexer und optischer Demultiplexer
DE19821245.3 1998-05-12

Publications (1)

Publication Number Publication Date
WO1999059281A1 true WO1999059281A1 (fr) 1999-11-18

Family

ID=7867517

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1999/001305 Ceased WO1999059281A1 (fr) 1998-05-12 1999-05-03 Multiplexeur et demultiplexeur optiques

Country Status (3)

Country Link
AU (1) AU4767899A (fr)
DE (1) DE19821245C1 (fr)
WO (1) WO1999059281A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6353497B1 (en) 2000-03-03 2002-03-05 Optical Coating Laboratory, Inc. Integrated modular optical amplifier
US6389188B1 (en) 1999-02-23 2002-05-14 Optical Coating Laboratory, Inc. Hybrid wavelength selective optical router and switch
US6792210B1 (en) 1999-08-23 2004-09-14 Optical Coating Laboratory, Inc. Hybrid optical add/drop multiplexing devices
US6885824B1 (en) 2000-03-03 2005-04-26 Optical Coating Laboratory, Inc. Expandable optical array

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005050739B4 (de) * 2005-10-22 2011-07-07 ESA Patentverwertungsagentur Sachsen-Anhalt GmbH, 39114 Demultiplex-Empfänger für Polymerfaserübertragung und Verfahren zu dessen Herstellung
DE102019133096A1 (de) 2019-12-05 2021-06-10 Sick Ag Optoelektronischer Sensor und Verfahren zur Erfassung eines Objekts

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997008574A1 (fr) * 1995-08-29 1997-03-06 Arroyo Optics, Inc. Dispositifs de couplage optiques rendus selectifs pour la longueur d'onde, grace a un reseau
US5652814A (en) * 1994-12-21 1997-07-29 E-Tek Dynamics, Inc. Integrable fiberoptic coupler and resulting devices and systems
US5748350A (en) * 1996-06-19 1998-05-05 E-Tek Dynamics, Inc. Dense wavelength division multiplexer and demultiplexer devices
WO1998036302A1 (fr) * 1997-02-14 1998-08-20 Aofr Pty. Ltd. Dispositifs et procede optiques

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4041047A1 (de) * 1990-12-20 1991-11-07 Siemens Ag Anordnung zum demultiplexen von licht unterschiedlicher wellenlaenge
DE4302133A1 (de) * 1993-01-27 1994-07-28 Kabelmetal Electro Gmbh Multiplexer/Demultiplexer für drei Wellenlängen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5652814A (en) * 1994-12-21 1997-07-29 E-Tek Dynamics, Inc. Integrable fiberoptic coupler and resulting devices and systems
WO1997008574A1 (fr) * 1995-08-29 1997-03-06 Arroyo Optics, Inc. Dispositifs de couplage optiques rendus selectifs pour la longueur d'onde, grace a un reseau
US5748350A (en) * 1996-06-19 1998-05-05 E-Tek Dynamics, Inc. Dense wavelength division multiplexer and demultiplexer devices
WO1998036302A1 (fr) * 1997-02-14 1998-08-20 Aofr Pty. Ltd. Dispositifs et procede optiques

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
KUANG-YI WU ET AL: "Self-routing wavelength switches", 1997 DIGEST OF THE IEEE/LEOS SUMMER TOPICAL MEETINGS: VERTICAL-CAVITY LASERS/TECHNOLOGIES FOR A GLOBAL INFORMATION INFRASTRUCTURE/WDM COMPONENTS TECHNOLOGY/ADVANCED SEMICONDUCTOR LASERS AND APPLICATIONS/GALLIUM NITRIDE MATERIALS, PROCESSING, AND DEVI, 1997, New York, NY, USA, IEEE, USA, pages 30 - 31, XP002115273, ISBN: 0-7803-3891-X *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6389188B1 (en) 1999-02-23 2002-05-14 Optical Coating Laboratory, Inc. Hybrid wavelength selective optical router and switch
US6792210B1 (en) 1999-08-23 2004-09-14 Optical Coating Laboratory, Inc. Hybrid optical add/drop multiplexing devices
US6353497B1 (en) 2000-03-03 2002-03-05 Optical Coating Laboratory, Inc. Integrated modular optical amplifier
US6885824B1 (en) 2000-03-03 2005-04-26 Optical Coating Laboratory, Inc. Expandable optical array

Also Published As

Publication number Publication date
DE19821245C1 (de) 2000-03-02
AU4767899A (en) 1999-11-29

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