AU2001282128A1 - An optical communication network - Google Patents

An optical communication network

Info

Publication number
AU2001282128A1
AU2001282128A1 AU2001282128A AU8212801A AU2001282128A1 AU 2001282128 A1 AU2001282128 A1 AU 2001282128A1 AU 2001282128 A AU2001282128 A AU 2001282128A AU 8212801 A AU8212801 A AU 8212801A AU 2001282128 A1 AU2001282128 A1 AU 2001282128A1
Authority
AU
Australia
Prior art keywords
channel wavelengths
loss
add
filter elements
wavelengths
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.)
Abandoned
Application number
AU2001282128A
Inventor
Ulf A. Persson
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of AU2001282128A1 publication Critical patent/AU2001282128A1/en
Abandoned 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
    • H04J14/0221—Power control, e.g. to keep the total optical power constant
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0201—Add-and-drop multiplexing
    • H04J14/0202—Arrangements therefor
    • H04J14/0209—Multi-stage arrangements, e.g. by cascading multiplexers or demultiplexers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0201—Add-and-drop multiplexing
    • H04J14/0202—Arrangements therefor
    • H04J14/0213—Groups of channels or wave bands arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0201—Add-and-drop multiplexing
    • H04J14/0215—Architecture aspects
    • H04J14/0219—Modular or upgradable architectures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0201—Add-and-drop multiplexing
    • H04J14/0202—Arrangements therefor
    • H04J14/0206—Express channels arrangements

Landscapes

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

Abstract

In a WDM network, nodes connected to a common transmission medium have add/drop filters for associated channel wavelengths which passively relay all other wavelengths while subjecting these to a pass-through loss. In order to optimise the transmission distance of a network, the filter elements within a node are arranged such that those channels that have the highest link losses are relayed through as few add/drop filter elements as possible. In particular, filter elements are arranged such that received channel wavelengths with a high link loss are dropped from said transmission medium upstream of received channel wavelengths with a low link loss. Similarly, for channel wavelengths transmitted by the node, the filters are arranged such that transmitted channel wavelengths with a high link loss are added to said transmission medium downstream of transmitted channel wavelengths with a low link loss. In this manner the additional losses caused by the add/drop filters are sustained by those channels that are better able to tolerate the additional more loss. <IMAGE>
AU2001282128A 2000-08-30 2001-08-29 An optical communication network Abandoned AU2001282128A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP00118759A EP1185017A1 (en) 2000-08-30 2000-08-30 An optical communication network
EP00118759 2000-08-30
PCT/EP2001/009940 WO2002019588A1 (en) 2000-08-30 2001-08-29 An optical communication network

Publications (1)

Publication Number Publication Date
AU2001282128A1 true AU2001282128A1 (en) 2002-03-13

Family

ID=8169693

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001282128A Abandoned AU2001282128A1 (en) 2000-08-30 2001-08-29 An optical communication network

Country Status (7)

Country Link
EP (2) EP1185017A1 (en)
JP (1) JP2004507971A (en)
CN (1) CN1217505C (en)
AT (1) ATE421196T1 (en)
AU (1) AU2001282128A1 (en)
DE (1) DE60137433D1 (en)
WO (1) WO2002019588A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1819072B1 (en) * 2006-02-14 2012-11-28 Alcatel Lucent Optical network element with dispersion compensation

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5774606A (en) * 1996-05-17 1998-06-30 Lucent Technologies, Inc. Optical fiber transmission system with a passive optical router
FI112569B (en) * 1997-05-13 2003-12-15 Nokia Corp Optical add / drop device
US6631018B1 (en) * 1997-08-27 2003-10-07 Nortel Networks Limited WDM optical network with passive pass-through at each node
WO1999035775A1 (en) * 1998-01-09 1999-07-15 Osicom Technologies, Inc. Short distance dense wavelength division multiplexing optical communication system
US5943149A (en) * 1998-02-18 1999-08-24 Cearns; Kevin J. Optical multiplexor/demultiplexor using a narrow band filter followed by a wideband filter
US6243175B1 (en) * 1998-08-06 2001-06-05 Ciena Corporation WDM optical communication system having reduced loss and cross-talk

Also Published As

Publication number Publication date
EP1314273A1 (en) 2003-05-28
CN1449608A (en) 2003-10-15
DE60137433D1 (en) 2009-03-05
JP2004507971A (en) 2004-03-11
ATE421196T1 (en) 2009-01-15
EP1314273B1 (en) 2009-01-14
CN1217505C (en) 2005-08-31
EP1185017A1 (en) 2002-03-06
WO2002019588A1 (en) 2002-03-07

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