IT1298465B1 - Trasmettitore ottico wdm con equalizzazione dei livelli di segnali ottici trasmessi - Google Patents

Trasmettitore ottico wdm con equalizzazione dei livelli di segnali ottici trasmessi

Info

Publication number
IT1298465B1
IT1298465B1 IT98MI000431A ITMI980431A IT1298465B1 IT 1298465 B1 IT1298465 B1 IT 1298465B1 IT 98MI000431 A IT98MI000431 A IT 98MI000431A IT MI980431 A ITMI980431 A IT MI980431A IT 1298465 B1 IT1298465 B1 IT 1298465B1
Authority
IT
Italy
Prior art keywords
equalization
signal levels
optical signal
transmitted
wdm
Prior art date
Application number
IT98MI000431A
Other languages
English (en)
Inventor
Atsushi Toyohara
Katsushi Akahori
Original Assignee
Nec 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 Nec Corp filed Critical Nec Corp
Publication of ITMI980431A1 publication Critical patent/ITMI980431A1/it
Application granted granted Critical
Publication of IT1298465B1 publication Critical patent/IT1298465B1/it

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
    • H04B10/506—Multiwavelength transmitters
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optical Communication System (AREA)
  • Lasers (AREA)
IT98MI000431A 1997-03-04 1998-03-03 Trasmettitore ottico wdm con equalizzazione dei livelli di segnali ottici trasmessi IT1298465B1 (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9063970A JP3039428B2 (ja) 1997-03-04 1997-03-04 波長多重伝送装置

Publications (2)

Publication Number Publication Date
ITMI980431A1 ITMI980431A1 (it) 1999-09-03
IT1298465B1 true IT1298465B1 (it) 2000-01-10

Family

ID=13244670

Family Applications (1)

Application Number Title Priority Date Filing Date
IT98MI000431A IT1298465B1 (it) 1997-03-04 1998-03-03 Trasmettitore ottico wdm con equalizzazione dei livelli di segnali ottici trasmessi

Country Status (4)

Country Link
US (1) US6104848A (it)
JP (1) JP3039428B2 (it)
FR (1) FR2760581A1 (it)
IT (1) IT1298465B1 (it)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6914717B1 (en) 1996-12-23 2005-07-05 Xtera Communications, Inc. Multiple wavelength pumping of raman amplifier stages
US6052393A (en) * 1996-12-23 2000-04-18 The Regents Of The University Of Michigan Broadband Sagnac Raman amplifiers and cascade lasers
US6597493B2 (en) 2000-05-05 2003-07-22 The Regents Of The University Of Michigan Nonlinear fiber amplifiers used for a 1430-1530nm low-loss window in optical fibers
US6574037B2 (en) 1998-06-16 2003-06-03 Xtera Communications, Inc. All band amplifier
CA2310199A1 (en) * 2000-05-29 2001-11-29 Tellamon Photonic Networks Inc. Multi-wavelength lasers
JP3363133B2 (ja) * 2000-07-21 2003-01-08 住友電気工業株式会社 波長多重分割伝送方法およびそのシステム
US7149432B1 (en) 2000-11-28 2006-12-12 Nortel Networks Limited Method and apparatus for equalization across plural data channels
US6532101B2 (en) 2001-03-16 2003-03-11 Xtera Communications, Inc. System and method for wide band Raman amplification
US6810214B2 (en) 2001-03-16 2004-10-26 Xtera Communications, Inc. Method and system for reducing degradation of optical signal to noise ratio
US6636666B2 (en) 2001-05-14 2003-10-21 University Of Iowa Research Foundation Optical power equalizer
US6587259B2 (en) 2001-07-27 2003-07-01 Xtera Communications, Inc. System and method for controlling noise figure
JP4569064B2 (ja) * 2001-09-27 2010-10-27 住友電気工業株式会社 光送信機及び波長分割多重伝送システム
US6594071B1 (en) 2001-10-02 2003-07-15 Xtera Communications, Inc. Method and apparatus for amplifier control
US7295584B2 (en) * 2001-12-17 2007-11-13 Peleton Photonic Systems System and method for generating multi-wavelength laser source using highly nonlinear fiber
US6826207B2 (en) 2001-12-17 2004-11-30 Peleton Photonic Systems Inc. Multi-wavelength laser source based on two optical laser beat signal and method
US6819479B1 (en) 2001-12-20 2004-11-16 Xtera Communications, Inc. Optical amplification using launched signal powers selected as a function of a noise figure
US7233432B2 (en) * 2001-12-20 2007-06-19 Xtera Communications, Inc. Pre-emphasized optical communication
US6778321B1 (en) 2002-03-15 2004-08-17 Xtera Communications, Inc. Fiber optic transmission system for a metropolitan area network
US7197245B1 (en) 2002-03-15 2007-03-27 Xtera Communications, Inc. System and method for managing system margin
US6819478B1 (en) 2002-03-15 2004-11-16 Xtera Communications, Inc. Fiber optic transmission system with low cost transmitter compensation
US6825973B1 (en) 2002-03-15 2004-11-30 Xtera Communications, Inc. Reducing leading edge transients using co-propagating pumps
EP1408633A1 (en) * 2002-10-10 2004-04-14 Corning Incorporated Apparatus and method for regeneration of optical pulses
SE0302191D0 (sv) * 2003-03-10 2003-08-11 Staffan Gunnarsson Transponder med infrarödteknik
US8064771B2 (en) * 2005-06-30 2011-11-22 Infinera Corporation Active control loop for power control of optical channel groups
KR101103392B1 (ko) * 2009-09-24 2012-01-05 김성숙 이중 케이블릴 장치
EP2924891A4 (en) * 2012-12-07 2015-11-11 Huawei Tech Co Ltd AUTOMATIC CURRENT TEST METHOD AND FIRST ROADM STATION THEREFOR
JP6454256B2 (ja) * 2015-11-19 2019-01-16 日本電信電話株式会社 波長多重光送信器

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS647727A (en) * 1987-06-30 1989-01-11 Nec Corp Light transmission equipment
JPH02282229A (ja) * 1989-04-24 1990-11-19 Nippon Telegr & Teleph Corp <Ntt> 光波長選択回路
JPH03269522A (ja) * 1990-03-20 1991-12-02 Fujikura Ltd 波長多重光伝送路増幅装置
JPH0443991A (ja) * 1990-06-11 1992-02-13 Mitsubishi Electric Corp 遅延線方式光集線装置
JP3155837B2 (ja) * 1992-09-14 2001-04-16 株式会社東芝 光伝送装置
BE1007217A3 (nl) * 1993-06-11 1995-04-25 Philips Electronics Nv Optisch soliton transmissiesysteem.
JPH08264871A (ja) * 1995-03-20 1996-10-11 Fujitsu Ltd 多波長一括光増幅装置
JP3199106B2 (ja) * 1995-04-17 2001-08-13 日本電信電話株式会社 多波長光源およびそれを用いた光波長多重信号発生回路
JP3373332B2 (ja) * 1995-05-26 2003-02-04 Ｋｄｄｉ株式会社 プリエンファシス方式光波長多重通信方法および装置
JP2687933B2 (ja) * 1995-06-09 1997-12-08 日本電気株式会社 光直接増幅器
JPH0945977A (ja) * 1995-08-02 1997-02-14 Matsushita Electric Ind Co Ltd 光ファイバ増幅器および光ファイバ伝送装置
FR2743233B1 (fr) * 1995-12-28 1998-01-23 Alcatel Nv Systeme de repartition de signaux optiques
JPH09326770A (ja) * 1996-06-06 1997-12-16 Nec Corp 波長分割多重伝送システムに用いられる線形中継器

Also Published As

Publication number Publication date
JP3039428B2 (ja) 2000-05-08
ITMI980431A1 (it) 1999-09-03
FR2760581A1 (fr) 1998-09-11
US6104848A (en) 2000-08-15
JPH10247895A (ja) 1998-09-14

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