WO2006028531A3 - Thermal chirp management directly modulated optical transmitter - Google Patents

Thermal chirp management directly modulated optical transmitter Download PDF

Info

Publication number
WO2006028531A3
WO2006028531A3 PCT/US2005/018278 US2005018278W WO2006028531A3 WO 2006028531 A3 WO2006028531 A3 WO 2006028531A3 US 2005018278 W US2005018278 W US 2005018278W WO 2006028531 A3 WO2006028531 A3 WO 2006028531A3
Authority
WO
WIPO (PCT)
Prior art keywords
modulated optical
signal
frequency modulated
optical signal
optical transmitter
Prior art date
Application number
PCT/US2005/018278
Other languages
French (fr)
Other versions
WO2006028531A2 (en
Inventor
Daniel Mahgerefteh
Roeland Nuyts
Yasuhiro Matsui
Parviz Tayebati
Bart Johnson
Duncan Walker
Xueyan Zheng
Original Assignee
Azna Llc
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 Azna Llc filed Critical Azna Llc
Priority to CN2005800378071A priority Critical patent/CN101124752B/en
Priority to EP05764209.2A priority patent/EP1790094B1/en
Publication of WO2006028531A2 publication Critical patent/WO2006028531A2/en
Publication of WO2006028531A3 publication Critical patent/WO2006028531A3/en

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
    • H04B10/50—Transmitters
    • H04B10/501—Structural aspects
    • H04B10/503—Laser transmitters
    • H04B10/504—Laser transmitters using direct modulation
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/28—Interference filters
    • G02B5/281—Interference filters designed for the infrared light
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29346—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by wave or beam interference
    • G02B6/29358—Multiple beam interferometer external to a light guide, e.g. Fabry-Pérot, etalon, VIPA plate, OTDL plate, continuous interferometer, parallel plate resonator
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29346—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by wave or beam interference
    • G02B6/29361—Interference filters, e.g. multilayer coatings, thin film filters, dichroic splitters or mirrors based on multilayers, WDM filters
    • G02B6/29362—Serial cascade of filters or filtering operations, e.g. for a large number of channels
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29379—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device
    • G02B6/29392—Controlling dispersion
    • G02B6/29394—Compensating wavelength dispersion
    • 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
    • H04B10/25133—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to chromatic dispersion including a lumped electrical or optical dispersion compensator
    • 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
    • H04B10/50—Transmitters
    • H04B10/58—Compensation for non-linear transmitter output
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29379—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device
    • G02B6/29398—Temperature insensitivity

Abstract

A fiber optic transmitter (figure 1) comprising a digital driver (driver) adapted to adjust the crossing point of a digital base signal, an optical source (laser) adapted to receive the digital base signal and produce a frequency modulated optical signal, and an optical spectrum reshaper (optical discriminator) adapted to convert the frequency modulated optical signal to an amplitude modulated optical signal. A method for transmitting a signal, comprising adjusting the crossing point of a digital base signal; providing the adjusted signal to an optical source to produce a frequency modulated optical signal; and providing the frequency modulated optical signal to an optical spectrum reshaper to convert the frequency modulated optical signal to an amplitude modulated optical signal.
PCT/US2005/018278 2004-09-02 2005-05-25 Thermal chirp management directly modulated optical transmitter WO2006028531A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN2005800378071A CN101124752B (en) 2004-09-02 2005-05-25 Optical transmitter of thermal chirp management of a direct modulation
EP05764209.2A EP1790094B1 (en) 2004-09-02 2005-05-25 Method and apparatus for transmitting a signal using thermal chirp management of a directly modulated transmitter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/933,081 US7406267B2 (en) 2002-11-06 2004-09-02 Method and apparatus for transmitting a signal using thermal chirp management of a directly modulated transmitter
US10/933,081 2004-09-02

Publications (2)

Publication Number Publication Date
WO2006028531A2 WO2006028531A2 (en) 2006-03-16
WO2006028531A3 true WO2006028531A3 (en) 2006-09-21

Family

ID=36036775

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2005/018278 WO2006028531A2 (en) 2004-09-02 2005-05-25 Thermal chirp management directly modulated optical transmitter

Country Status (4)

Country Link
US (1) US7406267B2 (en)
EP (1) EP1790094B1 (en)
CN (1) CN101124752B (en)
WO (1) WO2006028531A2 (en)

Families Citing this family (78)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7663762B2 (en) 2002-07-09 2010-02-16 Finisar Corporation High-speed transmission system comprising a coupled multi-cavity optical discriminator
US7263291B2 (en) * 2002-07-09 2007-08-28 Azna Llc Wavelength division multiplexing source using multifunctional filters
US6963685B2 (en) * 2002-07-09 2005-11-08 Daniel Mahgerefteh Power source for a dispersion compensation fiber optic system
US7054538B2 (en) * 2002-10-04 2006-05-30 Azna Llc Flat dispersion frequency discriminator (FDFD)
US7356264B2 (en) * 2002-11-06 2008-04-08 Azna Llc Chirp managed laser with electronic pre-distortion
US7742542B2 (en) * 2002-11-06 2010-06-22 Finisar Corporation Phase correlated quadrature amplitude modulation
US7280721B2 (en) * 2002-11-06 2007-10-09 Azna Llc Multi-ring resonator implementation of optical spectrum reshaper for chirp managed laser technology
US7536113B2 (en) * 2002-11-06 2009-05-19 Finisar Corporation Chirp managed directly modulated laser with bandwidth limiting optical spectrum reshaper
US7558488B2 (en) * 2002-11-06 2009-07-07 Finisar Corporation Reach extension by using external Bragg grating for spectral filtering
US7505694B2 (en) * 2002-11-06 2009-03-17 Finisar Corporation Thermal chirp compensation systems for a chirp managed directly modulated laser (CML™) data link
US7564889B2 (en) * 2002-11-06 2009-07-21 Finisar Corporation Adiabatically frequency modulated source
US7907648B2 (en) * 2002-12-03 2011-03-15 Finisar Corporation Optical FM source based on intra-cavity phase and amplitude modulation in lasers
US7613401B2 (en) * 2002-12-03 2009-11-03 Finisar Corporation Optical FM source based on intra-cavity phase and amplitude modulation in lasers
US7474859B2 (en) * 2002-12-03 2009-01-06 Finisar Corporation Versatile compact transmitter for generation of advanced modulation formats
US7809280B2 (en) * 2002-12-03 2010-10-05 Finisar Corporation Chirp-managed, electroabsorption-modulated laser
US7813648B2 (en) * 2002-12-03 2010-10-12 Finisar Corporation Method and apparatus for compensating for fiber nonlinearity in a transmission system
US7609977B2 (en) * 2002-12-03 2009-10-27 Finisar Corporation Optical transmission using semiconductor optical amplifier (SOA)
US7480464B2 (en) * 2002-12-03 2009-01-20 Finisar Corporation Widely tunable, dispersion tolerant transmitter
US7542683B2 (en) 2002-12-03 2009-06-02 Finisar Corporation Chirp Managed Laser (CML) transmitter
US7925172B2 (en) * 2002-12-03 2011-04-12 Finisar Corporation High power, low distortion directly modulated laser transmitter
US7860404B2 (en) * 2002-12-03 2010-12-28 Finisar Corporation Optical FM source based on intra-cavity phase and amplitude modulation in lasers
US8792531B2 (en) 2003-02-25 2014-07-29 Finisar Corporation Optical beam steering for tunable laser applications
US7630425B2 (en) * 2003-02-25 2009-12-08 Finisar Corporation Optical beam steering for tunable laser applications
US7639955B2 (en) 2004-09-02 2009-12-29 Finisar Corporation Method and apparatus for transmitting a signal using a chirp managed laser (CML) and an optical spectrum reshaper (OSR) before an optical receiver
US7436871B2 (en) * 2004-12-03 2008-10-14 Corning Incorporated Method and device for performing wavelength modulation with Distributed Bragg Reflector (DBR) laser
US20070012860A1 (en) * 2005-05-05 2007-01-18 Daniel Mahgerefteh Optical source with ultra-low relative intensity noise (RIN)
US7778552B2 (en) * 2006-03-02 2010-08-17 Finisar Corporation Directly modulated laser with integrated optical filter
US7738795B2 (en) * 2006-03-02 2010-06-15 Finisar Corporation VCSEL with integrated optical filter
US20070271052A1 (en) * 2006-05-16 2007-11-22 Abel Christopher J Method and apparatus for measuring duty cycle based on data eye monitor
JP2008004633A (en) * 2006-06-20 2008-01-10 Nec Corp Optical module and packaging method
US7697186B2 (en) * 2006-10-24 2010-04-13 Finisar Corporation Spectral response modification via spatial filtering with optical fiber
US20080101795A1 (en) * 2006-10-27 2008-05-01 Craig Schulz Data signal amplitude and cross-point detectors in an optical modulator control system
US7962045B2 (en) 2006-12-22 2011-06-14 Finisar Corporation Optical transmitter having a widely tunable directly modulated laser and periodic optical spectrum reshaping element
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
US7991291B2 (en) 2007-02-08 2011-08-02 Finisar Corporation WDM PON based on DML
JP2008251673A (en) * 2007-03-29 2008-10-16 Nec Corp Optical device and manufacturing method therefor
US7961831B2 (en) * 2007-03-29 2011-06-14 Intel Corporation Measuring a horizontal eye opening during system operation
US7697847B2 (en) * 2007-04-02 2010-04-13 Finisar Corporation Dispersion compensator for frequency reshaped optical signals
US8204386B2 (en) 2007-04-06 2012-06-19 Finisar Corporation Chirped laser with passive filter element for differential phase shift keying generation
US7991297B2 (en) 2007-04-06 2011-08-02 Finisar Corporation Chirped laser with passive filter element for differential phase shift keying generation
US7760777B2 (en) * 2007-04-13 2010-07-20 Finisar Corporation DBR laser with improved thermal tuning efficiency
US7778295B2 (en) * 2007-05-14 2010-08-17 Finisar Corporation DBR laser with improved thermal tuning efficiency
US8306433B2 (en) * 2007-06-25 2012-11-06 Nippon Telegraph And Telephone Corporation Optical modulation signal generating device and optical modulation signal generating method
US7796263B2 (en) * 2007-09-05 2010-09-14 Baker Hughes Incorporated Method and apparatus for determining fluid content downhole
US8160455B2 (en) 2008-01-22 2012-04-17 Finisar Corporation Method and apparatus for generating signals with increased dispersion tolerance using a directly modulated laser transmitter
WO2009114738A2 (en) 2008-03-12 2009-09-17 Hypres, Inc. Digital radio-frequency tranceiver system and method
US7869473B2 (en) * 2008-03-21 2011-01-11 Finisar Corporation Directly modulated laser with isolated modulated gain electrode for improved frequency modulation
US8494376B2 (en) * 2008-04-14 2013-07-23 Avago Technologies General Ip (Singapore) Pte. Ltd. Method and apparatus for testing transmitters in optical fiber networks
US8260150B2 (en) 2008-04-25 2012-09-04 Finisar Corporation Passive wave division multiplexed transmitter having a directly modulated laser array
EP2154800A1 (en) * 2008-08-13 2010-02-17 PGT Photonics S.p.A. Dispersin tolerant optical system and method thereof
US9344196B1 (en) 2009-05-28 2016-05-17 Freedom Photonics, Llc. Integrated interferometric optical transmitter
US8401399B2 (en) 2009-05-28 2013-03-19 Freedom Photonics, Llc. Chip-based advanced modulation format transmitter
US8199785B2 (en) 2009-06-30 2012-06-12 Finisar Corporation Thermal chirp compensation in a chirp managed laser
GB2474455A (en) * 2009-10-14 2011-04-20 Coreoptics Inc Directly modulating the current of a laser and externally modulating the amplitude of the laser output
KR101600014B1 (en) * 2011-05-25 2016-03-08 한국전자통신연구원 Wavelength division multiplexing passive optical network and optical output signal performance measuring method for the network
EP2738889B1 (en) * 2011-12-20 2016-08-10 Huawei Technologies Co., Ltd. Laser, passive optical network system and apparatus, and method for controlling wavelength
CN107681461B (en) * 2012-05-17 2019-12-27 菲尼萨公司 Directly modulated laser for Passive Optical Network (PON) applications
CN104993873B (en) * 2012-10-17 2017-10-24 青岛海信宽带多媒体技术有限公司 A kind of optical module
GB2507527A (en) * 2012-11-01 2014-05-07 Oclaro Technology Ltd Semiconductor DBR laser
CN102938678A (en) * 2012-12-04 2013-02-20 上海朗研光电科技有限公司 Clock synchronization device applicable to quantum communication system
CN104919665B (en) 2013-08-15 2018-12-14 华为技术有限公司 A kind of laser, laser modulation method and laser composite wave system
US9236949B1 (en) * 2014-06-24 2016-01-12 Applied Optoelectronics, Inc. Laser transceiver with improved bit error rate
CN104467969B (en) * 2014-12-10 2017-03-22 北京理工大学 Method for measuring chromatic dispersion of optical fiber link through fractional order Fourier transformation
CN104967480B (en) * 2015-07-15 2016-12-07 北京理工大学 The method using Fourier Transform of Fractional Order monitoring optical fiber link nonlinear effect
CN105450309B (en) * 2015-11-11 2018-02-16 烽火通信科技股份有限公司 High speed signal frequency equilibrium and chirp management method based on single optical filter
US9559880B1 (en) * 2016-03-04 2017-01-31 Inphi Corporation Eye modulation for pulse-amplitude modulation communication systems
JP6472766B2 (en) * 2016-03-16 2019-02-20 株式会社東芝 Random number generator
CN106253975A (en) * 2016-08-11 2016-12-21 青岛海信宽带多媒体技术有限公司 A kind of optical module
US10320152B2 (en) 2017-03-28 2019-06-11 Freedom Photonics Llc Tunable laser
KR102254954B1 (en) 2018-12-31 2021-05-25 한국전자통신연구원 Tunable semiconductor laser and operation method thereof
US10720995B1 (en) * 2019-08-21 2020-07-21 Cisco Technology, Inc. Unequal spacing on multilevel signals
CN111865427B (en) * 2020-07-20 2022-03-11 成都优博创通信技术有限公司 Wavelength alignment method, device, transmitter and optical network system
CN112346242B (en) * 2020-12-03 2021-05-28 长飞光纤光缆股份有限公司 Method and device for quickly and automatically adjusting transmission eye pattern parameters of optical module
CN114244431B (en) * 2021-11-22 2023-11-14 武汉万集光电技术有限公司 Transmission parameter calibration method and optical communication equipment
WO2023215157A1 (en) * 2022-05-05 2023-11-09 Arris Enterprises Llc Improved signal sensitivity for an optical line terminal

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6331991B1 (en) * 1998-07-17 2001-12-18 The United States Of America As Represented By The National Security Agency Transmission system using a semiconductor laser and a fiber grating discriminator
US20040008937A1 (en) * 2002-07-09 2004-01-15 Daniel Mahgerefteh Power source for a dispersion compensation fiber optic system
US6778307B2 (en) * 2001-02-21 2004-08-17 Beyond 3, Inc. Method and system for performing swept-wavelength measurements within an optical system
US20040218890A1 (en) * 2002-10-04 2004-11-04 Daniel Mahgerefteh Flat dispersion frequency discriminator (FDFD)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2107147B (en) 1981-09-03 1985-07-10 Standard Telephones Cables Ltd Optical requency modulation system
DE3787902T2 (en) 1986-02-17 1994-02-17 Nec Corp Optical transmitter with an optical frequency discriminator.
US5416629A (en) 1992-12-02 1995-05-16 General Instrument Corporation Intensity modulated digital optical communications using a frequency modulated signal laser
FR2745451B1 (en) 1996-02-23 1998-04-17 Cit Alcatel METHOD FOR OPTICAL TRANSMISSION OF DIGITAL DATA
US6115403A (en) 1997-07-22 2000-09-05 Ciena Corporation Directly modulated semiconductor laser having reduced chirp
US6104851A (en) 1998-04-24 2000-08-15 Mahgerefteh; Daniel Transmission system comprising a semiconductor laser and a fiber grating discriminator
FR2781322B1 (en) 1998-07-20 2000-09-08 Alsthom Cge Alcatel OPTICAL DATA TRANSMISSION DEVICE
US6760142B2 (en) * 2002-05-13 2004-07-06 Lucent Technologies Inc. Delay interferometer optical pulse generator
US7263291B2 (en) 2002-07-09 2007-08-28 Azna Llc Wavelength division multiplexing source using multifunctional filters
US7663762B2 (en) 2002-07-09 2010-02-16 Finisar Corporation High-speed transmission system comprising a coupled multi-cavity optical discriminator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6331991B1 (en) * 1998-07-17 2001-12-18 The United States Of America As Represented By The National Security Agency Transmission system using a semiconductor laser and a fiber grating discriminator
US6778307B2 (en) * 2001-02-21 2004-08-17 Beyond 3, Inc. Method and system for performing swept-wavelength measurements within an optical system
US20040008937A1 (en) * 2002-07-09 2004-01-15 Daniel Mahgerefteh Power source for a dispersion compensation fiber optic system
US20040218890A1 (en) * 2002-10-04 2004-11-04 Daniel Mahgerefteh Flat dispersion frequency discriminator (FDFD)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1790094A4 *

Also Published As

Publication number Publication date
US20050111852A1 (en) 2005-05-26
US7406267B2 (en) 2008-07-29
WO2006028531A2 (en) 2006-03-16
CN101124752B (en) 2013-03-20
EP1790094A4 (en) 2008-11-05
CN101124752A (en) 2008-02-13
EP1790094A2 (en) 2007-05-30
EP1790094B1 (en) 2016-01-06

Similar Documents

Publication Publication Date Title
WO2006028531A3 (en) Thermal chirp management directly modulated optical transmitter
EP0792034A3 (en) Optical transmission device, WDM optical transmission apparatus, and optical transmission system using return-to-zero optical pulses
WO2004044625A3 (en) Power source for a dispersion compensation fiber optic system
WO2006060310A3 (en) Inter-transceiver module communication for optimization of link between transceivers
WO2005084268A3 (en) Fm source and spectral reshaping element
TW200608719A (en) Directly modulated laser optical transmission system
WO2008136992A3 (en) Method and apparatus for low chirp transmitter for optical fiber communications
TW200735550A (en) Directly modulated laser optical transmission system with phase modulation
EP0825733A3 (en) Method of generating duobinary signal and optical transmitter using the same method
AU2003291328A1 (en) Optical fiber or waveguide lens
ATE500660T1 (en) SYSTEM AND METHOD FOR AUTOMATIC COMPENSATION OF CHROMATIC DISPERSION
EP1770594A3 (en) Transponder communication using leaky cable antenna
WO2002095991A3 (en) Sub-carrier generation for optical communication
WO2002017522A3 (en) Method and system for transmitting signals with spectrally enriched optical pulses
WO2002061983A8 (en) Dual-mode fiber optic telecommunications system and method
FR2807252B1 (en) DEVICE FOR PRODUCING A PHASE AND AMPLITUDE MODULATED RADIO FREQUENCY SIGNAL
WO2005006576A3 (en) Controlling the extinction ratio in optical networks
WO2006067789A3 (en) Device, system and method of transferring information over a communication network including optical media
AU2003284259A1 (en) Transmitter and method using half rate data streams for generating full rate modulation on an optical signal
WO2004019071A3 (en) Method and apparatus providing common optical line monitoring and service channel over wdm optical transmission system
CA2364797A1 (en) Data transmission via direct modulation of a mid-ir laser
AU2002352188A1 (en) Optical communication system
WO2002006769A3 (en) Method for controlling fiber optic sensor scale factor
ATE260002T1 (en) OPTICAL TRANSMITTER, SYSTEM AND METHOD FOR TRANSMITTING SIGNALS WITH HIGH DATA RATES
WO2002091634A3 (en) Method and system for tuning an optical signal based on transmission conditions

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NG NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

DPEN Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed from 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 2005764209

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 200580037807.1

Country of ref document: CN

WWP Wipo information: published in national office

Ref document number: 2005764209

Country of ref document: EP