CA2088459A1 - System for optically transmitting digital communications over an optical fiber with dispersion at the operating wavelength - Google Patents

System for optically transmitting digital communications over an optical fiber with dispersion at the operating wavelength

Info

Publication number
CA2088459A1
CA2088459A1 CA2088459A CA2088459A CA2088459A1 CA 2088459 A1 CA2088459 A1 CA 2088459A1 CA 2088459 A CA2088459 A CA 2088459A CA 2088459 A CA2088459 A CA 2088459A CA 2088459 A1 CA2088459 A1 CA 2088459A1
Authority
CA
Canada
Prior art keywords
optical fiber
modulation
dispersion
optical
intensity
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.)
Granted
Application number
CA2088459A
Other languages
French (fr)
Other versions
CA2088459C (en
Inventor
Berthold Wedding
Martin Mittrich
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.)
Alcatel Lucent NV
Original Assignee
Berthold Wedding
Martin Mittrich
Alcatel N.V.
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
Priority claimed from DE4202863A external-priority patent/DE4202863A1/en
Priority claimed from DE19924216790 external-priority patent/DE4216790A1/en
Priority claimed from DE19924230601 external-priority patent/DE4230601A1/en
Application filed by Berthold Wedding, Martin Mittrich, Alcatel N.V. filed Critical Berthold Wedding
Publication of CA2088459A1 publication Critical patent/CA2088459A1/en
Application granted granted Critical
Publication of CA2088459C publication Critical patent/CA2088459C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2507—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion
    • H04B10/2513—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to chromatic dispersion
    • H04B10/25137—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to chromatic dispersion using pulse shaping at the transmitter, e.g. pre-chirping or dispersion supported transmission [DST]

Abstract

When digital signals are transmitted over optical fibers (3), which have a considerable chromatic dispersion at the wavelength being used, the length of the transmission path is very limited when the digital signal to be transmitted is converted into an optical signal by means of intensity modulation. If frequency modulation (also called FSK = Frequency Shift Keying) is used instead of the intensity modulation, the bridgeable path can be greatly increased, but requires a suitable optical receiver at the receiving end. The invention utilizes a simple optical receiver (4), which is not sensitive to frequency modulation, but to intensity modulation. This is possible, because an intensity variation is created, due to the chromatic dispersion of the optical fiber (3) and the resulting running time differences of signal portions at different wavelengths (.lambda.0, .lambda.1) from the initial frequency modulation during the transmission over the optical fiber (3), which process is contained in the digital signal.
CA002088459A 1992-02-01 1993-01-29 System for optically transmitting digital communications over an optical fiber with dispersion at the operating wavelength Expired - Fee Related CA2088459C (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DEP4202863.9 1992-02-01
DE4202863A DE4202863A1 (en) 1992-02-01 1992-02-01 Digital communication system with chromatic dispersive light conductor - propagates binary sequence as bursts of longer and shorter wavelengths giving rise to AM for opto-electronic demodulation and decision
DE19924216790 DE4216790A1 (en) 1992-05-21 1992-05-21 Digital optical signal transmission system
DEP4216790.6 1992-05-21
DEP4230601.9 1992-09-12
DE19924230601 DE4230601A1 (en) 1992-09-12 1992-09-12 Digital optical signal transmission system

Publications (2)

Publication Number Publication Date
CA2088459A1 true CA2088459A1 (en) 1993-08-02
CA2088459C CA2088459C (en) 2000-08-08

Family

ID=27203355

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002088459A Expired - Fee Related CA2088459C (en) 1992-02-01 1993-01-29 System for optically transmitting digital communications over an optical fiber with dispersion at the operating wavelength

Country Status (10)

Country Link
US (1) US5371625A (en)
EP (1) EP0554736B1 (en)
JP (1) JPH05347586A (en)
CN (1) CN1040492C (en)
AT (1) ATE136705T1 (en)
AU (1) AU660062B2 (en)
CA (1) CA2088459C (en)
DE (1) DE59302134D1 (en)
ES (1) ES2089595T3 (en)
RU (1) RU2110895C1 (en)

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US7280721B2 (en) * 2002-11-06 2007-10-09 Azna Llc Multi-ring resonator implementation of optical spectrum reshaper for chirp managed laser technology
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US7613401B2 (en) * 2002-12-03 2009-11-03 Finisar Corporation Optical FM source based on intra-cavity phase and amplitude modulation in lasers
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CN101073210B (en) 2004-02-27 2013-04-17 菲尼萨公司 Optical system including FM source and optical spectrum reshaper
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US20070012860A1 (en) * 2005-05-05 2007-01-18 Daniel Mahgerefteh Optical source with ultra-low relative intensity noise (RIN)
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US7941057B2 (en) 2006-12-28 2011-05-10 Finisar Corporation Integral phase rule for reducing dispersion errors in an adiabatically chirped amplitude modulated signal
US8131157B2 (en) * 2007-01-22 2012-03-06 Finisar Corporation Method and apparatus for generating signals with increased dispersion tolerance using a directly modulated laser transmitter
US7962044B2 (en) 2007-02-02 2011-06-14 Finisar Corporation Temperature stabilizing packaging for optoelectronic components in a transmitter module
US8027593B2 (en) 2007-02-08 2011-09-27 Finisar Corporation Slow chirp compensation for enhanced signal bandwidth and transmission performances in directly modulated lasers
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US7697847B2 (en) * 2007-04-02 2010-04-13 Finisar Corporation Dispersion compensator for frequency reshaped optical signals
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US8204386B2 (en) * 2007-04-06 2012-06-19 Finisar Corporation Chirped laser with passive filter element for differential phase shift keying generation
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Also Published As

Publication number Publication date
AU660062B2 (en) 1995-06-08
AU3205093A (en) 1993-08-05
EP0554736B1 (en) 1996-04-10
CA2088459C (en) 2000-08-08
DE59302134D1 (en) 1996-05-15
CN1040492C (en) 1998-10-28
ATE136705T1 (en) 1996-04-15
US5371625A (en) 1994-12-06
EP0554736A2 (en) 1993-08-11
RU2110895C1 (en) 1998-05-10
ES2089595T3 (en) 1996-10-01
JPH05347586A (en) 1993-12-27
CN1078586A (en) 1993-11-17
EP0554736A3 (en) 1994-03-09

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