WO1996007251A3 - Coherent optical communication system - Google Patents

Coherent optical communication system Download PDF

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Publication number
WO1996007251A3
WO1996007251A3 PCT/IB1995/000665 IB9500665W WO9607251A3 WO 1996007251 A3 WO1996007251 A3 WO 1996007251A3 IB 9500665 W IB9500665 W IB 9500665W WO 9607251 A3 WO9607251 A3 WO 9607251A3
Authority
WO
WIPO (PCT)
Prior art keywords
coherent optical
communication system
optical communication
signal
receiver
Prior art date
Application number
PCT/IB1995/000665
Other languages
French (fr)
Other versions
WO1996007251A2 (en
Inventor
Geert Florimond Gerar Depovere
Original Assignee
Philips Electronics Nv
Philips Norden 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 Philips Electronics Nv, Philips Norden Ab filed Critical Philips Electronics Nv
Publication of WO1996007251A2 publication Critical patent/WO1996007251A2/en
Publication of WO1996007251A3 publication Critical patent/WO1996007251A3/en

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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

Landscapes

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

Abstract

A coherent optical communication system comprises an information source (DS) and a transmitter (Tx) for modulating information onto a carrier for transmission over a channel (CH). A receiver for signals transmitted over the channel operates on a phase diversity principle. In order that effective equalisation of the received signals may be provided the signal is down-converted to substantially baseband quadrature and then the upper sideband and the lower sideband are separated (SS) and equalised (E1, E2) independently. The system solves the problem of applying equalisation to a down-converted signal folded around zero frequency by separating the sidebands of the signal first. The amount of high frequency electronics required at an optical receiver in a coherent optical communications system may thus be reduced. The invention further relates to the optical receiver for use in such a coherent optical communication system.
PCT/IB1995/000665 1994-09-01 1995-08-21 Coherent optical communication system WO1996007251A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP94202498.5 1994-09-01
EP94202498 1994-09-01

Publications (2)

Publication Number Publication Date
WO1996007251A2 WO1996007251A2 (en) 1996-03-07
WO1996007251A3 true WO1996007251A3 (en) 1996-04-11

Family

ID=8217152

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB1995/000665 WO1996007251A2 (en) 1994-09-01 1995-08-21 Coherent optical communication system

Country Status (1)

Country Link
WO (1) WO1996007251A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6119229A (en) * 1997-04-11 2000-09-12 The Brodia Group Virtual property system
US7650084B2 (en) * 2005-09-27 2010-01-19 Alcatel-Lucent Usa Inc. Optical heterodyne receiver and method of extracting data from a phase-modulated input optical signal

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0491421A2 (en) * 1990-12-17 1992-06-24 Koninklijke Philips Electronics N.V. Coherent optical multichannel receiver
GB2277652A (en) * 1993-04-30 1994-11-02 Ericsson Telefon Ab L M Chromatic dispersion compensation

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0653906A (en) * 1992-08-03 1994-02-25 Nippon Telegr & Teleph Corp <Ntt> Receiver and transmitter-receiver for coherent optical communication

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0491421A2 (en) * 1990-12-17 1992-06-24 Koninklijke Philips Electronics N.V. Coherent optical multichannel receiver
GB2277652A (en) * 1993-04-30 1994-11-02 Ericsson Telefon Ab L M Chromatic dispersion compensation

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Vol. 18, No. 280, E-1555; & JP,A,06 053 906 (NIPPON TELEGR & TELEPH CORP (NTT)), 25 February 1994. *

Also Published As

Publication number Publication date
WO1996007251A2 (en) 1996-03-07

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