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WO2009054057A1 - 光受信器 - Google Patents

光受信器 Download PDF

Info

Publication number
WO2009054057A1
WO2009054057A1 PCT/JP2007/070797 JP2007070797W WO2009054057A1 WO 2009054057 A1 WO2009054057 A1 WO 2009054057A1 JP 2007070797 W JP2007070797 W JP 2007070797W WO 2009054057 A1 WO2009054057 A1 WO 2009054057A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical
photoreceiver
photoreceiver element
light
variable attenuator
Prior art date
Application number
PCT/JP2007/070797
Other languages
English (en)
French (fr)
Inventor
Toru Yamazaki
Original Assignee
Fujitsu Limited
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 Fujitsu Limited filed Critical Fujitsu Limited
Priority to PCT/JP2007/070797 priority Critical patent/WO2009054057A1/ja
Publication of WO2009054057A1 publication Critical patent/WO2009054057A1/ja

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
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
    • H04B10/0795—Performance monitoring; Measurement of transmission parameters
    • H04B10/07955—Monitoring or measuring power
    • 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
    • H04J14/02216—Power control, e.g. to keep the total optical power constant by gain equalization
    • 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
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
    • H04B10/0799—Monitoring line transmitter or line receiver equipment
    • 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
    • H04B10/66—Non-coherent receivers, e.g. using direct detection
    • H04B10/67—Optical arrangements in the receiver
    • H04B10/671—Optical arrangements in the receiver for controlling the input optical signal
    • H04B10/672—Optical arrangements in the receiver for controlling the input optical signal for controlling the power of the input optical signal

Landscapes

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

Abstract

　本発明の目的は、光通信システムに用いられる光受信器において、光強度をモニタするとともに、ダイナミックレンジの広い光受信器を提供することである。 　上記の目的を達成するため、光受信器は、入力した光を分岐する分光器と、該分光器が分岐した第１の光を受光する第１の受光素子と、該分光器が分岐した第２の光を減衰する光可変減衰器と、該光可変減衰器で減衰した第２の光を受光する第２の受光素子と、該第２の受光素子の出力に基づき該光可変減衰器の減衰量を制御する光可変減衰量制御部と、該第１の受光素子と該第２の受光素子の出力を切替えて、光強度の出力とする光強度モニタ部とを備える。
PCT/JP2007/070797 2007-10-25 2007-10-25 光受信器 WO2009054057A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/070797 WO2009054057A1 (ja) 2007-10-25 2007-10-25 光受信器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/070797 WO2009054057A1 (ja) 2007-10-25 2007-10-25 光受信器

Publications (1)

Publication Number Publication Date
WO2009054057A1 true WO2009054057A1 (ja) 2009-04-30

Family

ID=40579167

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/070797 WO2009054057A1 (ja) 2007-10-25 2007-10-25 光受信器

Country Status (1)

Country Link
WO (1) WO2009054057A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3444972A1 (en) * 2017-08-18 2019-02-20 Nokia Solutions and Networks Oy Method and means of handling signals in an olt receiver

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02100531A (ja) * 1988-10-07 1990-04-12 Nec Corp 光受信回路
JPH0326118A (ja) * 1989-06-23 1991-02-04 Nec Corp 光受信回路
JPH04158639A (ja) * 1990-10-23 1992-06-01 Nec Corp 光受信回路
JPH0955518A (ja) * 1995-08-17 1997-02-25 Furukawa Electric Co Ltd:The 光受信器
JPH11308181A (ja) * 1998-04-20 1999-11-05 Nec Eng Ltd 光信号受信装置の入力保護回路

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02100531A (ja) * 1988-10-07 1990-04-12 Nec Corp 光受信回路
JPH0326118A (ja) * 1989-06-23 1991-02-04 Nec Corp 光受信回路
JPH04158639A (ja) * 1990-10-23 1992-06-01 Nec Corp 光受信回路
JPH0955518A (ja) * 1995-08-17 1997-02-25 Furukawa Electric Co Ltd:The 光受信器
JPH11308181A (ja) * 1998-04-20 1999-11-05 Nec Eng Ltd 光信号受信装置の入力保護回路

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3444972A1 (en) * 2017-08-18 2019-02-20 Nokia Solutions and Networks Oy Method and means of handling signals in an olt receiver
WO2019034533A1 (en) * 2017-08-18 2019-02-21 Nokia Solutions And Networks Oy METHOD AND MEANS FOR PROCESSING SIGNALS IN AN OLT RECEIVER

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